WO2019192301A1 - 视频图像处理方法与装置 - Google Patents
视频图像处理方法与装置 Download PDFInfo
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- WO2019192301A1 WO2019192301A1 PCT/CN2019/078051 CN2019078051W WO2019192301A1 WO 2019192301 A1 WO2019192301 A1 WO 2019192301A1 CN 2019078051 W CN2019078051 W CN 2019078051W WO 2019192301 A1 WO2019192301 A1 WO 2019192301A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/56—Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
Definitions
- the present application relates to the field of video coding and decoding, and in particular to a video image processing method and apparatus.
- the main video coding standard adopts block-based motion compensation technology in the inter-frame prediction part.
- the main principle is to find a most similar block in the coded image for the current image block. This process is called motion compensation.
- CTUs Coding Tree Units
- Each CTU can be further divided into square or rectangular coding units (CUs).
- Each CU looks for the most similar block in the reference frame (typically the reconstructed frame near the time domain of the current frame) as the prediction block for the current CU.
- the relative displacement between the current block (ie, the current CU) and the similar block (ie, the prediction block of the current CU) is called a Motion Vector (MV).
- MV Motion Vector
- a motion vector candidate list of a current CU is generally constructed in two ways, and the motion vector candidate list is also referred to as a merge candidate list.
- the candidate motion vector of the spatial domain is included in the motion vector candidate list, and the motion vector (or motion information) of the encoded neighboring block of the current CU is usually filled into the motion vector candidate list.
- the motion vector candidate list further includes a candidate motion vector in the time domain, and the Temporal Motion Vector Prediction (TMVP) uses the motion vector (or motion) of the corresponding position CU (ie, the co-located CU) of the current CU in the adjacent encoded image. information).
- TMVP Temporal Motion Vector Prediction
- the optimal one candidate motion vector is selected from the merge candidate list as the motion vector of the current CU; the predicted block of the current CU is determined according to the motion vector of the current CU.
- ATMVP Advanced/Alternative temporal motion vector prediction
- the basic idea of ATMVP technology is to perform motion compensation by acquiring motion information of multiple sub-blocks in the current CU.
- the ATMVP technology introduces motion information of a plurality of sub-blocks in the current CU as candidates in a build candidate list (for example, a merge candidate list or an AMVP (Advanced Motion Vector Prediction) candidate list).
- the implementation of ATMVP technology can be roughly divided into two steps. In the first step, a time domain vector is determined by scanning a candidate motion vector list of the current CU or a motion vector of a neighboring image block of the current CU. In the second step, the current CU is divided into N ⁇ N (N defaults to 4).
- Sub-CUs determining corresponding blocks of the respective sub-blocks in the reference frame according to the time domain vector obtained in the first step, and determining the sub-blocks according to the motion vectors of the corresponding blocks in the reference frame of each sub-block Motion vector.
- the second step of the current ATMVP technology performs frame-level adaptive setting on the size of the sub-CU, and the default size is 4 ⁇ 4. When a certain preset condition is satisfied, the size of the sub-CU will be set to 8 ⁇ 8.
- the size setting of the sub-CU has some problems that do not match the current motion information storage granularity (8 ⁇ 8).
- ATMVP technology and TMVP technology have redundant operations in some cases, and there is room for improvement in the process of constructing candidate motion vector lists.
- the present application provides a video image processing method and apparatus, which can reduce the complexity of the ATMVP technology while maintaining the performance gain of the existing ATMVP technology.
- a video image processing method comprising:
- each sub-image block in the current image block is in one-to-one correspondence with each sub-image block in the related block;
- N is less than M
- the number of scans of the candidate motion vector in the process of acquiring the reference motion vector of the current image block can be reduced. It should be understood that applying the solution provided by the present application to the first step of the existing ATMVP technology can simplify the redundant operations that exist.
- a video image processing method comprising:
- each sub-image block in the current image block and the related block corresponds one-to-one;
- a video image processing apparatus comprising:
- a building module configured to sequentially scan N neighboring blocks in the preset M neighboring blocks of the current image block, and determine a target neighboring block according to the scan result, where N is less than M; according to the motion vector of the target neighboring block, Determining, by the current image block and the reference image of the current image block, a correlation block of the current image block; dividing the current image block and the related block into a plurality of sub-image blocks in the same manner, the current image block Each sub-image block in the one-to-one correspondence with each sub-image block in the related block;
- a prediction module configured to respectively predict a corresponding sub-image block in the current image block according to a motion vector of each sub-image block in the correlation block.
- a video image processing apparatus comprising:
- a building module configured to determine M neighboring blocks of the current image block according to M candidates in a motion vector second candidate list of the current image block; and sequentially scan N neighboring blocks in the M neighboring blocks, Determining, according to the scan result, the target neighboring block, N is smaller than M; determining, according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block, the relevant block of the current image block;
- a correlation block of a current image block determines a specific candidate in a motion vector first candidate list of the current image block; when it is determined that the specific candidate is employed, the current image block and the related block are in the same manner Dividing into a plurality of sub-image blocks, each sub-image block in the current image block is in one-to-one correspondence with each sub-image block in the related block;
- a prediction module configured to respectively predict a corresponding sub-image block in the current image block according to a motion vector of each sub-image block in the correlation block.
- a video image processing apparatus comprising a memory and a processor, the memory for storing an instruction, the processor for executing the instruction stored by the memory, and the instruction stored in the memory
- the execution of the processor is for performing the method of the first aspect or any of the possible implementations of the first aspect.
- a video image processing apparatus comprising a memory and a processor, the memory for storing instructions, the processor for executing the instructions stored by the memory, and instructions stored in the memory
- the execution of the processor is for performing the method of any of the possible implementations of the second aspect or the second aspect.
- a computer storage medium having stored thereon a computer program that, when executed by a computer, causes the computer to implement the method of the first aspect or any of the possible implementations of the first aspect.
- a computer storage medium having stored thereon a computer program, the computer program being executed by a computer to cause the computer to implement the method of any of the possible implementations of the second aspect or the second aspect.
- a computer program product comprising instructions, which when executed by a computer, cause the computer to implement the method of the first aspect or any of the possible implementations of the first aspect.
- a computer program product comprising instructions that, when executed by a computer, cause the computer to implement the method of any of the possible implementations of the second aspect or the second aspect.
- a video image processing method comprising:
- the base motion vector list includes at least one set of bi-predictive base motion vector groups, where the bi-predictive base motion vector group includes a first base motion vector and a second base motion vector;
- the current image block is predicted according to a motion vector of the current image block.
- a video image processing method comprising:
- Determining a base motion vector list the base motion vector list including a base motion vector group
- a video image processing apparatus comprising:
- a building module configured to determine a basic motion vector list, where the basic motion vector list includes at least one set of bi-predictive basic motion vector groups, where the bi-predictive basic motion vector group includes a first basic motion vector and a second basic motion vector Determining two motion vector offsets from a preset offset set, the two motion vector offsets respectively corresponding to the first base motion vector and the second base motion vector; Determining a motion vector of the current image block by a base motion vector, the second base motion vector, and the two motion vector offsets;
- a prediction module configured to predict the current image block according to a motion vector of the current image block.
- a fourteenth aspect a video image processing apparatus is provided, the apparatus comprising:
- a determining module configured to determine a basic motion vector list, where the basic motion vector list includes a basic motion vector group
- a processing module configured to: when the at least one basic motion vector in the basic motion vector group points to the specific reference image, discard the motion vector of the current image block according to the basic motion vector group and the motion vector offset.
- a video image processing apparatus comprising a memory and a processor, the memory for storing an instruction, the processor is configured to execute the memory stored instruction, and is stored in the memory The execution of the instructions is such that the processor is operative to perform a method in any of the possible implementations of the eleventh or eleventh aspect.
- a video image processing apparatus comprising a memory and a processor, the memory for storing an instruction, the processor for executing the memory stored instruction, and storing the memory
- the execution of the instructions causes the processor to perform the method of any of the possible implementations of the twelfth or twelfth aspect.
- a seventeenth aspect a computer storage medium having stored thereon a computer program, the computer program being executed by a computer to cause the computer to implement any of the eleventh or eleventh aspects of the possible implementation method.
- a computer storage medium having stored thereon a computer program, the computer program being executed by a computer to cause the computer to implement any of the possible implementations of the twelfth or twelfth aspect method.
- a computer program product comprising instructions which, when executed by a computer, cause the computer to implement a method in any one of the possible implementations of the eleventh or eleventh aspect.
- a computer program product comprising instructions which, when executed by a computer, cause the computer to implement the method of any of the possible implementations of the twelfth or twelfth aspect.
- FIG. 1 is a schematic flowchart of a video image processing method provided by an embodiment of the present application.
- FIG. 2 is a schematic diagram of acquiring candidate motion vectors of a current block by neighboring blocks of a current image block.
- FIG. 3 is a schematic diagram of scaling processing of candidate motion vectors.
- FIG. 4 is another schematic flowchart of a video image processing method provided by an embodiment of the present application.
- FIG. 5 is a schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 6 is another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 7 is a schematic flowchart of a video image processing method provided by an embodiment of the present application.
- FIG. 8 is another schematic flowchart of a video image processing method according to an embodiment of the present application.
- FIG. 9 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 10 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 11 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 12 is a schematic diagram of a candidate for acquiring a motion vector first candidate list.
- FIG. 13 is still another schematic diagram of a candidate for constructing a motion vector first candidate list.
- FIG. 14 and FIG. 15 are schematic flowcharts of a video image processing method according to an embodiment of the present application.
- FIG. 16 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 17 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 18 is another schematic flowchart of a video image processing method according to an embodiment of the present application.
- FIG. 19 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- FIG. 20 is still another schematic block diagram of a video image processing apparatus according to an embodiment of the present application.
- a prediction block refers to a basic unit used for prediction in a frame of image.
- the prediction block is also called a Prediction Unit (PU).
- PU Prediction Unit
- the image is divided into a plurality of image blocks. Further, each of the plurality of image blocks can be divided into a plurality of image blocks again, and so on.
- the number of layers to be segmented can be different, and the operation methods assumed are different.
- the names of image blocks on the same level may be different.
- each image block of a plurality of image blocks into which a frame image is first divided is referred to as a Coding Tree Unit (CTU); each coding tree unit may include one code.
- a Coding Unit (CU) is again divided into a plurality of coding units; one coding unit may be divided into one, two, four or other number of prediction units according to a prediction manner.
- the coding tree unit is also referred to as a Largest Coding Unit (LCU).
- LCU Largest Coding Unit
- Prediction refers to finding image data similar to the prediction block, also referred to as a reference block of the prediction block.
- the redundancy information in encoding/compression is reduced by encoding/compressing the difference between the prediction block and the reference block of the prediction block.
- the difference between the prediction block and the reference block may be a residual obtained by subtracting the corresponding pixel value of the prediction block from the reference block.
- Prediction includes intra prediction and inter prediction. Intra prediction refers to a reference block that looks up the prediction block within the frame in which the prediction block is located.
- Inter prediction refers to a reference block that looks up the prediction block in a frame other than the frame in which the prediction block is located.
- the prediction unit is the smallest unit in the image, and the prediction unit does not continue to be divided into multiple image blocks.
- the "image block” or “current image block” mentioned hereinafter refers to one prediction unit (or one coding unit), and one image block can be further divided into a plurality of sub-image blocks, and each sub-image block can be further processed. prediction.
- a motion vector candidate list is constructed, and the current image block is predicted according to the candidate motion vector selected in the motion vector candidate list.
- the motion vector candidate list has multiple types of patterns. The following is an example of a plurality of types of motion vector candidate lists.
- the encoding of the current image block can be completed by the following steps.
- the current image block can be decoded by the following steps.
- a motion vector candidate list is obtained by the method according to an embodiment of the present application.
- the motion vector candidate list acquired by the decoding end is consistent with the motion vector candidate list acquired by the encoding end.
- the motion vector MV1 of the current image block is obtained in the motion vector candidate list.
- the predicted image block of the current image block is acquired, and the residual image is combined to obtain the current image block.
- the motion vector of the current image block is equal to the prediction MV (Motion vector prediction, MVP).
- this first type of mode is also known as the Merge mode.
- the MV1 is used as the search starting point for the motion search, and the final search is performed.
- the displacement of the position and the starting point of the search is recorded as the motion vector difference (MVD).
- the predicted image block of the current image block is then determined from the reference image based on the motion vector MV1+MVD of the current image block.
- the encoder is also sent to the MVD to the decoder.
- this second type of mode is also referred to as the AMVP mode (ie, the normal inter prediction mode).
- the motion vector candidate list in different types of modes may be constructed in the same or different manner.
- the motion vector candidate list constructed in the same manner can be applied to only one of the type patterns, and can also be applied to different types of construction modes, and is not limited herein.
- the motion vector candidate list of the two construction modes is hereinafter referred to as a motion vector first candidate list and a motion vector second candidate list.
- the motion vector candidate list of the two construction modes is hereinafter referred to as a motion vector first candidate list and a motion vector second candidate list.
- One difference between the two lists is that at least one of the motion vector first candidate lists includes a motion vector of the sub-image block, and each of the motion vector second candidate lists includes a motion vector of the image block.
- the image block and the current image block are the same type of concept, and all refer to a prediction unit (or a coding unit), and the sub-image block refers to a plurality of segments obtained on the basis of the image block. Sub-image block.
- the reference block of the current image block is determined according to the candidate, and then the residual of the image block and the reference block is calculated.
- the candidate in the motion vector second candidate list is used for prediction, if the candidate used is the motion vector of the sub-image block, the reference block of each sub-image block in the current image block is determined according to the candidate, and then calculated.
- the residual of each sub-image block in the current image block and its reference block, and the residual of each sub-image block is spliced into the residual of the current image block.
- one of the candidates may be determined according to the ATMVP technique.
- a motion vector determined according to the ATMVP technique may be added to the list as the first candidate.
- the candidate is added to the motion vector second candidate list according to the motion vector of the preset number of spatial neighboring blocks at the preset position of the current image block.
- the motion vectors determined according to the ATMVP technology are added to the list as candidates.
- the candidate joining order of the two candidate lists may be other orders, and no limitation is imposed thereon.
- the following uses the manner of constructing the second candidate list of motion vectors to exemplify how to determine one of the candidates according to the ATMVP technique.
- the motion vector of an image block can contain two pieces of information: 1) the image to which the motion vector points; 2) the displacement.
- the motion vector of an image block represents the image block having the displacement in the image pointed to by the motion vector.
- the meaning of the motion vector includes: a reference image of the encoded/decoded image block, and a reference block of the encoded/decoded image block relative to the encoded/decoded image block. Displacement. It should be noted that the reference block of one image block mentioned herein refers to an image block representing the residual used to calculate the image block.
- FIG. 1 is a schematic flowchart of a video image processing method according to an embodiment of the present application. The method includes the following steps.
- the current image block is an image block to be encoded (or decoded).
- the image frame in which the current image block is located is referred to as the current frame.
- the current image block is a coding unit (CU).
- the motion vector second candidate list of the current image block may be a Merge candidate list or an AMVP candidate list.
- the motion vector second candidate list may be a regular motion vector candidate list (Normal Merge List) in the Merge candidate list. It should be understood that the motion vector second candidate list may also have another name.
- the M candidate motion vectors may be determined according to motion vectors of M neighboring blocks within the current frame of the current image block.
- the neighboring block may be an image block that is adjacent to the position of the current image block or has a certain positional spacing on the current frame. It should be understood that the M neighboring blocks are image blocks that have been encoded (or decoded) within the current frame.
- the M neighboring blocks of the current image block are located at four positions A 1 (left) ⁇ B 1 (top) ⁇ B 0 (top right) around the current image block as shown in FIG. 2 ⁇ A 0 (lower left) image block.
- the M (ie, M equals 4) candidate motion vectors of the current image block are determined based on the motion vectors of the image blocks of the 4 positions.
- the neighboring block that is not available when a neighboring block that is not available appears in the M neighboring blocks, or a neighboring block that adopts an intra coding mode occurs in the M neighboring blocks, the neighboring block that is not available or the neighboring that adopts the intra coding mode The motion vector of the block is not available. Then, the motion vector of the neighboring block that is not available is not a candidate motion vector, and the motion vector that is not available is discarded to be added to the motion vector second candidate list of the current image block.
- step S110 M candidate motion vectors have been added to the motion vector second candidate list.
- step S120 the motion vector second candidate list may be directly scanned.
- S120 sequentially scan N candidate motion vectors of the M candidate motion vectors, and determine a reference motion vector according to the scan result, where N is less than M.
- N is less than M.
- M and N are both natural numbers.
- N candidate motion vectors out of the M candidate motion vectors are sequentially scanned. Fixedly scanning the N candidate motion vectors in the M candidate motion vectors in sequence, which may be fixed to scan the candidate motion vectors of the N candidate motion vectors that have been added to the candidate motion vector list; or, It is fixed to scan N candidate motion vectors of the M candidate motion vectors that have been added with the candidate motion vector list.
- the process of determining the reference motion vector according to the scan result of the N candidate motion vectors may be: sequentially determining the N candidate motion vectors based on the preset condition, and determining the reference motion vector according to the determination result.
- the preset condition includes that the image block may or may not adopt an intra prediction encoding mode, and the candidate motion vector points to a reference frame that is the same as the reference image of the current image block.
- the reference image of the current image block is the reference image that is the closest to the image of the current image block; or the reference image of the current image block is the reference image preset by the codec end; or, the reference image of the current image block is The reference image specified in the video parameter set, sequence header, sequence parameter set, image header, image parameter set, and strip header.
- the reference image of the current image block is a co-located frame of the current image block
- the co-located frame is a frame for obtaining motion information for prediction in the strip-level information header.
- the co-located frame is also referred to as a collocated picture.
- step S120 only N of the M candidate motion vectors acquired in step S110 are scanned, so that the number of scans can be reduced.
- the first N candidate motion vectors of the M candidate motion vectors may be sequentially scanned.
- step S120 the last N candidate motion vectors of the M candidate motion vectors may be sequentially scanned; or, the N candidate motion vectors among the M candidate motion vectors may be sequentially scanned. This application does not limit this.
- step S120 partial candidate motion vectors among the M candidate motion vectors are sequentially scanned.
- step S120 partial candidate motion vectors in the candidate motion vectors currently added to the motion vector second candidate list are sequentially scanned.
- the motion vector second candidate list of the current image block includes the M candidate motion vectors determined in step S110 and the candidate motion vectors determined in step S130.
- other candidate motion vectors that continue to join the motion vector second candidate list are further determined according to other methods, where not Make restrictions.
- the method may further include: S140, determining a motion vector of the current image block according to the motion vector second candidate list obtained in step S130.
- the solution provided by the present application can be applied to the ATMVP technology.
- the time domain vector of the current image block is obtained by scanning all airspace candidate motion vectors currently added in the motion vector second candidate list. For example, if the motion vector second candidate list is usually filled with 4 spatial candidate motion vectors, it may happen that four candidate motion vectors need to be scanned to obtain the time domain vector of the current image block.
- N is less than M
- the number of scans of the candidate motion vector in the process of acquiring the reference motion vector of the current image block can be reduced. It should be understood that applying the solution provided by the present application to the first step of the existing ATMVP technology can simplify the redundant operations that exist.
- test configuration was RA configuration and LDB configuration.
- the solution provided by this application was tested.
- the test results showed that By reducing the number of scans, you can also maintain the performance gain of the ATMVP technology.
- the solution provided by the present application can reduce the complexity of the ATMVP technology while maintaining the performance gain of the existing ATMVP technology.
- the second candidate list of motion vectors formed by the constructed scheme provided by the present application can be applied to the encoding end and the decoding end.
- the execution body of the method provided by the present application may be an encoding end or a decoding end.
- the motion vector second candidate list formed by the construction scheme provided by the present application may be applied to the first type mode (for example, Merge mode) described above.
- first type mode for example, Merge mode
- step S110 four motion vector second candidate lists for adding the current image block are determined according to motion vectors of four neighboring blocks of the current image block in the current frame.
- Candidate motion vector, ie M is equal to 4.
- step S120 N candidate motion vectors out of the four candidate motion vectors are scanned, and N is less than 4.
- N is equal to 1.
- N is equal to 2 or 3.
- step S120 it is determined one by one whether the N candidate motion vectors among the M candidate motion vectors satisfy the preset condition, and the reference motion vector is determined according to the determination result.
- the definition of the preset condition is the same as the reference frame pointed by the candidate motion vector and the reference image of the current image block.
- step S120 the N candidate motion vectors are sequentially scanned, when the first candidate motion vector that meets the preset condition is scanned, that is, when the first reference frame and the current frame are scanned.
- the scanning is stopped, and the reference motion vector is determined according to the scanned candidate motion vector that meets the preset condition.
- the number of scans may be equal to N or less than N.
- the scanning is stopped, and the candidate motion vector is used as the reference motion vector of the current image block.
- step S120 when the candidate motion vectors that meet the preset condition are not scanned in the N candidate motion vectors, that is, when the reference frames pointed by the N candidate motion vectors are not the same as the current frame of the current image block, At the same time, the default value is used as the value of the reference motion vector.
- the default value is (0,0), that is, the reference motion vector is (0,0). It should be understood that the default value may have other definitions depending on the actual situation.
- step S120 when the candidate motion vectors that meet the preset condition are not scanned in the N candidate motion vectors, that is, when the reference frames pointed by the N candidate motion vectors are not the same as the current frame of the current image block, the specific candidate motion vector in the motion vector second candidate list is subjected to scaling processing, and the reference motion vector is determined according to the specific candidate motion vector after the scaling processing.
- the specific candidate motion vector may be the first motion vector or the last motion vector obtained in the scanning order among the N candidate motion vectors.
- the specific candidate motion vector may also be a motion vector obtained in other scan orders among the N candidate motion vectors.
- the specific candidate motion vector in the motion vector second candidate list is scaled, according to the specific candidate motion vector after the scaling process Determining the reference motion vector, comprising: performing a scaling process on the specific candidate motion vector in the second candidate list of motion vectors, such that the reference frame pointed by the specific candidate motion vector subjected to the scaling process is the same as the reference image of the current image block;
- the specific candidate motion vector is used as the reference motion vector.
- curr_pic represents the image of the current image block
- col_pic represents the collocated picture of the current image block
- neigh_ref_pic represents the reference frame pointed by the specific candidate motion vector.
- the time distance between the reference image neigh_ref_pic pointed by the specific candidate motion vector and the image curr_pic of the image block corresponding to the specific motion vector, and the reference image col_pic of the current image block and the image curr_pic of the current image block The time distance between them determines the scaling of the particular motion vector.
- one candidate motion vector of the N candidate motion vectors is scaled to be processed.
- the reference frame is the same as the co-located frame of the current frame, and then this scaled candidate motion vector is used as the motion vector of the current image block. This can improve the accuracy of the motion vector of the current image block.
- the specific candidate motion vector in this embodiment may be a candidate that is closest to the time frame in the reference frame of the N candidate motion vectors and the current frame of the current image block. Motion vector.
- selecting one candidate motion vector whose reference frame is closest to the co-located frame of the current frame in the N candidate motion vectors is subjected to scaling processing, which can reduce the time required for performing the scaling processing, thereby improving the efficiency of acquiring the motion vector of the current image block.
- the specific candidate motion vector in this embodiment may also be any one of the N candidate motion vectors.
- the specific candidate motion vector in this embodiment is the one candidate motion vector scanned.
- N is equal to 1.
- a reference motion vector of the current image block is obtained by scanning one candidate motion vector in the motion vector second candidate list.
- the candidate motion vector of the scan is different from the co-located frame of the current frame where the current image block is located, the candidate motion vector is scaled so that the reference frame of the candidate motion vector after the scaling process and the current frame are The co-located frame is the same; the candidate motion vector after the scaling process is used as the reference motion vector of the current image block.
- the reference frame of the scanned candidate motion vector is the same as the co-located frame of the current frame, the candidate motion vector is used as the motion vector of the current image block.
- the candidate motion vector is scaled so that the reference frame is the same as the co-located frame of the current frame, and then the scaled candidate motion vector is used as the candidate motion vector.
- the motion vector of the current image block which can improve the accuracy of the motion vector of the current image block. Therefore, compared with the prior art, the solution provided by the embodiment of the present application can simplify the process of determining the motion vector of the current image block, and can improve the accuracy of the motion vector of the current image block.
- determining, according to the reference motion vector, the current image block, and the reference image of the current image block, determining to continue to join the candidate motion vector in the motion vector second candidate list including: dividing the current image block into multiple a sub-image block; determining, according to the reference motion vector, a correlation block of the sub-image block in the reference image of the current image block; and determining a candidate motion vector to continue to join the motion vector second candidate list according to the motion vector of the correlation block.
- the motion vector of the associated block of each sub-image block in the current image block is added as a candidate to the motion vector second candidate list.
- the sub-image block is predicted according to the motion vector of the relevant block of each sub-image block in the current image block.
- the representative motion vector of the relevant block of the current image block is added as a candidate to the motion vector second candidate list and the candidate is marked as determined according to the ATMVP technique.
- the relevant block of the current image block is determined according to the mark and the candidate, and the current image block and the related block are divided into a plurality of sub-image blocks in the same manner, and each sub-image in the current image block is divided.
- the block is in one-to-one correspondence with each sub-image block in the correlation block; and the corresponding sub-image block in the current image block is predicted according to the motion vector of each sub-image block in the correlation block.
- the representative motion vector of the correlation block is used to replace the unobservable motion vector, and the corresponding sub-image block in the current image block is predicted.
- the candidate determined according to the ATMVP technology is discarded to join the motion vector second candidate list.
- the representative motion vector of the relevant block of the current image block may refer to a motion vector of a center position of the relevant block, or other motion vector representing the related block, which is not limited herein.
- a related block may be referred to as a collocated block or a correlation block.
- the current image block is a CU
- the sub-image block obtained by dividing it may be referred to as a sub-CU.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are fixed to be greater than or equal to 64 pixels.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are each fixed to 8 x 8 pixels.
- the size of the sub-image block is frame-adapted, and the size of the sub-image block defaults to 4 ⁇ 4.
- the size of the sub-image block is set to 8 ⁇ 8.
- the size of the sub-image block is set to 8 x 8, otherwise the default value of 4 x 4 is used.
- the size of the sub-image block of the current image block is set to 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the last encoded image.
- the information of the size of the sub-image block of the block therefore, can save storage space.
- the TMVP technology scales the MV of the co-located CU in the lower right corner or the center position of the current CU to obtain the time domain candidate motion vector of the current CU.
- TMVP obtains MVP by traversing the code blocks of two fixed positions in the reference image, which is TB ⁇ TC, and directly uses the MV traversed to the MVP of TMVP.
- the sub-picture block size in the ATMVP technology is set to 8 ⁇ 8, and it will use the MV in the existing merge list of the embodiments of the present application to perform the relevant block. The positioning will locate the MV of the relevant block as the MVP of the ATMVP.
- constructing the merge list is to first construct the merge candidate list of ATMVP and then construct the merge candidate list of TMVP.
- the TMVP candidate list is built in the merge list build process, and the ATMVP's merge candidate list is built during the affine merge list build process.
- ATMVP and TMVP respectively construct two different lists, but it is reasonable to say that there is no need to add the same or the same set of MVs to the two merge candidate lists.
- the merge candidate list constructed by TMVP and ATMVP may have some redundancy, that is, the two technologies may export the same set of time domain candidate motion information for the current CU.
- the setting does not perform the TMVP operation.
- the TMVP operation is not set. Therefore, the same or the same group of MVs can be avoided in the merge candidate list constructed by the ATMVP and the TMVP respectively, and the partial redundancy operation can be skipped, thereby effectively saving the coding and decoding time and improving the coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. This is due to the fact that the hardware design of the encoder and/or decoder requires as much time as possible for the same size processing area to complete the encoding or decoding. However, for areas with more small blocks, the time required to encode or decode will far exceed that of other areas.
- the TMVP operation may not be set in the case where the width and height of the sub-image block and/or the related block of the sub-image block are both less than 8 pixels. Therefore, saving the pipeline time of small block coding or decoding is very meaningful for parallel processing of hardware.
- the current coding technology is increasingly utilized for time domain correlation, and many time domain prediction techniques are adopted, such as ATMVP technology. Therefore, for small blocks, the performance impact of skipping the TMVP operation can be neglected, which can effectively save the codec time and improve the coding efficiency.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block may also be Other sizes, such as the size of the sub-image block and/or the size of the associated block of the sub-image block, are A ⁇ B, A ⁇ 64, B ⁇ 64, and A and B are integers of 4.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are 4 x 16 pixels, or 16 x 4 pixels.
- determining, according to the reference motion vector, the current image block, and the reference image of the current image block, determining to continue to join the candidate motion vector in the motion vector second candidate list including: according to the reference motion vector, A correlation block of the current image block is determined in the reference image of the current image block; and a candidate motion vector that continues to join the motion vector second candidate list is determined according to the motion vector of the correlation block.
- the encoded/decoded image is generally used as the reference image to be encoded/decoded.
- a reference image may also be constructed to increase the similarity of the reference image to the current image to be encoded/decoded.
- video surveillance belongs to this type of scenario.
- a video surveillance scene it is usually monitored that the camera is stationary or only slow moving occurs, and the background is considered to be substantially unchanged.
- objects such as people or cars photographed in a video surveillance camera often move or change, and the foreground can be considered to change frequently.
- a specific reference image can be created that contains only high quality background information.
- a plurality of image blocks may be included in the particular reference image, and any one of the image blocks is taken from a certain decoded image, and different image blocks in the particular reference image may be taken from different decoded images.
- the background portion of the current image to be encoded/decoded can refer to the specific reference image, whereby the residual information of the inter prediction can be reduced, thereby improving the encoding/decoding efficiency.
- the particular reference image has at least one of the following properties: a composite reference, a long-term reference image, an image that is not output.
- the image that is not output refers to an image that is not outputted; in general, the image that is not output exists as a reference image of other images.
- the specific reference image may be a constructed long-term reference image, or may be a construction frame that is not output, or may be a long-term reference image that is not output, and the like.
- the construction frame is also referred to as a composite reference frame.
- the non-specific reference image may be a reference image that does not have at least one of the following: a construction frame, a long-term reference image, an image that is not output.
- the non-specific reference image may include a reference image other than the construction frame, or include a reference image other than the long-term reference image, or include a reference image other than the image that is not output, or include a long-term reference image other than the configuration.
- the reference image includes a reference image other than the construction frame that is not output, or includes a reference image other than the long-term reference image that is not output, and the like.
- the long-term reference image and the short-term reference image can be distinguished.
- the short-term reference image is a concept corresponding to a long-term reference image.
- the short-term reference image is present in the reference image buffer for a period of time after which the short-term reference image is removed from the reference image buffer after a number of move-in and move-out operations in the reference image buffer after the short-term reference image has passed.
- the reference picture buffer may also be referred to as a reference picture list buffer, a reference picture list, a reference frame list buffer, or a reference frame list, etc., which are collectively referred to herein as reference picture buffers.
- the long-term reference image (or a portion of the data in the long-term reference image) may remain in the reference image buffer, the long-term reference image (or a portion of the data in the long-term reference image) is not subject to the decoded reference image in the reference image buffer
- the effect of the shift in and out operations is that the long-term reference image (or a portion of the data in the long-term reference image) is removed from the reference image buffer only when the decoding terminal issues an update instruction operation.
- Short-term reference images and long-term reference images may be called differently in different standards.
- short-term reference images in H.264/advanced video coding (AVC) or H.265/HEVC standards are called For short-term reference
- the long-term reference picture is called a long-term reference.
- AVC audio coding coding
- IEEE Institute of electrical and electronics engineers
- the long-term reference image is called For the background picture.
- the long-term reference image is called a golden frame.
- referring to a long-term reference image as a long-term reference frame does not mean that H.264/AVC or H.265/ must be used.
- HEVC and other standards correspond to the technology.
- the long-term reference image mentioned above may be constructed from image blocks taken from a plurality of decoded images, or may be updated by using a plurality of decoded images to update existing reference frames (eg, pre-stored reference frames).
- existing reference frames eg, pre-stored reference frames
- the specific reference image of the configuration may also be a short-term reference image.
- the long-term reference image may not be a constructed reference image.
- the specific reference image may include a long-term reference image
- the non-specific reference image may include a short-term reference image
- the type of reference frame may be identified by a special field in the code stream structure.
- determining that the reference image is a long-term reference image
- determining that the reference image is a specific reference image; or determining that the reference image is a specific reference image when determining that the reference image is a frame that is not output; or, determining When the reference image is a construction frame, the reference image is determined to be a specific reference image; or, when the reference image is determined to be a frame that is not output, and the reference image is further determined to be a construction frame, the reference image is determined to be a specific reference image.
- each type of reference image may have a corresponding identifier.
- whether the reference image is a specific reference image may be determined according to the identifier of the reference image.
- the reference image when determining that the reference image has an identification of the long-term reference image, is determined to be a particular reference image.
- the reference image when it is determined that the reference image has an identification that is not to be output, the reference image is determined to be a particular reference image.
- the reference image when it is determined that the reference image has an identification of the constructed frame, the reference image is determined to be a particular reference image.
- determining that the reference image has a specific reference image when the reference image has at least two of the following three identifiers: an identifier of the long-term reference image, an identifier that is not output, a construction frame, or a composite reference frame Logo. For example, when it is determined that the reference image has an identifier that is not output, and it is determined that the reference image has an identifier of the construction frame, the reference image is determined to be a specific reference image.
- the image may have an identifier indicating whether it is an output frame, and when a certain image is indicated not to be output, indicating that the frame is a reference image, and further, determining whether the frame has an identifier of a constructed frame, if And determining that the reference image is a specific reference image. If an image is instructed to be output, it may be determined that the frame is not a specific reference image without making a determination as to whether or not to construct the frame. Alternatively, if an image is indicated not to be output, but has an identity that is not a constructed frame, then it may be determined that the frame is not a particular reference image.
- determining that the reference image is specific when determining that the reference image satisfies one of the following conditions from a picture header, a picture parameter set (PPS), a slice header, and a slice header Reference image:
- the reference image is a long-term reference image
- the reference image is a construction reference image
- the reference image is an image that is not output
- the reference image is further determined to be a construction reference image.
- a motion vector of a certain image block on another image is used to determine a motion vector of the image block.
- the image block is referred to as a first image block
- a certain image block on other images to be utilized is referred to as a time domain reference block or a related block of the first image block.
- the first image block and the time domain reference block (or related block) of the first image block are located on different images.
- the term "related block" is uniformly used in this article.
- the motion vector of the relevant block when the ATMVP technology is applied to construct the AMVP candidate list, when determining the motion vector of the relevant block of the current image block according to the ATMVP technology, the motion vector of the relevant block needs to be scaled, and then the current image is determined according to the scaled motion vector.
- the motion vector of the block Generally, the time distance between the reference image pointed by the motion vector of the relevant block and the image of the relevant block, and the time distance between the reference image of the current image block and the image of the current image block are determined, and the relevant block is determined.
- the scale of the motion vector when the ATMVP technology is applied to construct the AMVP candidate list, when determining the motion vector of the relevant block of the current image block according to the ATMVP technology, the motion vector of the relevant block needs to be scaled, and then the current image is determined according to the scaled motion vector.
- the motion vector of the block Generally, the time distance between the reference image pointed by the motion vector of the relevant block and the image of the relevant block, and the time distance between the reference image
- the motion vector of the correlation block is referred to as MV 2
- the reference frame index of the reference image pointed to by the motion vector MV 2 is x.
- the reference frame index value x is the difference between the sequence number (for example, POC) of the reference image pointed to by MV 2 and the sequence number of the image of the relevant block.
- the reference frame index of the reference image of the first image block is referred to as y.
- the reference frame index value y is the difference between the sequence number of the reference image of the first image block and the sequence number of the image of the first image block.
- the scaling of the motion vector MV 2 is y/x.
- the product of the motion vector MV 2 and y/x may be used as the motion vector of the first image block.
- the motion vector of the current image block is determined according to the motion vector of the relevant block, specifically: when the motion vector of the relevant block points to the specific reference image, or the reference image of the current image block is a specific reference In the image, the motion vector of the current image block is determined according to the motion vector of the processed relevant block, wherein the motion vector of the processed relevant block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a motion vector of the relevant block of the scaling step.
- the motion vector of the current image block is determined according to the motion vector of the relevant block, specifically: when the motion vector of the relevant block points to the specific reference image, or the reference image of the current image block is a specific reference In the case of an image, the motion vector of the current image block is determined from the motion vector of the relevant block.
- step S120 includes: not scanning a candidate motion vector that meets a preset condition in the N candidate motion vectors, and performing a scaling process on the specific candidate motion vector in the motion vector second candidate list, according to the scaling process.
- the specific candidate motion vector determines the reference motion vector.
- the method further includes: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is a specific reference image, determining to continue adding the motion vector according to the processed specific candidate motion vector A candidate motion vector in the second candidate list, wherein the processed specific candidate motion vector is the same as the specific candidate motion vector before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a motion vector of a related block of the scaling step.
- step S120 includes: not scanning a candidate motion vector that meets a preset condition in the N candidate motion vectors, and performing a scaling process on the specific candidate motion vector in the motion vector second candidate list, according to the scaling process.
- the specific candidate motion vector determines the reference motion vector.
- the method further includes: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is a specific reference image, discarding to continue to join the motion vector according to the specific candidate motion vector.
- Candidate motion vector for the candidate list includes: not scanning a candidate motion vector that meets a preset condition in the N candidate motion vectors, and performing a scaling process on the specific candidate motion vector in the motion vector second candidate list, according to the scaling process.
- the specific candidate motion vector determines the reference motion vector.
- the method further includes: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is a specific reference image, discarding to continue to join the motion vector according to the specific candidate motion vector.
- one of the N candidate motion vectors is scaled to have a reference frame and a current frame.
- the co-located frames are the same, and then the scaled candidate motion vector is used as the motion vector of the current image block, so that the accuracy of the motion vector of the current image block can be improved.
- the current image block is divided into sub-image blocks of size 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the size of the sub-block of the previous encoded image block. Information, therefore, can save storage space.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the embodiment of the present application further provides a video image processing method, where the method includes the following steps:
- Step S410 corresponds to step S110 described above, and the specific description refers to the above, and details are not described herein again.
- S420 Scan at least part of the candidate motion vectors of the M candidate motion vectors, and determine a reference motion vector of the current image block according to the scan result.
- step S420 may correspond to step S120 described above, as described in detail above.
- all candidate motion vectors in the M candidate motion vectors are sequentially scanned, and a reference motion vector of the current image block is determined according to the scan result.
- step S420 the specific manner of determining the reference motion vector of the current image block according to the scan result may refer to the related description in the foregoing embodiment, and details are not described herein again.
- the current image block is divided into a plurality of sub-image blocks, wherein the size of the sub-image block is fixed to be greater than or equal to 64 pixels.
- the current image block is a CU
- the sub-image block obtained by dividing it may be referred to as a sub-CU.
- the reference image of the current image block may be a co-located frame of the current image block.
- the size of the sub-image block is frame-adapted, and the size of the sub-image block defaults to 4 ⁇ 4.
- the size of the sub-image block is set to 8 ⁇ 8.
- the size of the sub-image block is set to 8 x 8, otherwise the default value of 4 x 4 is used.
- the size of the sub-image block of the current image block is fixed to be greater than or equal to 64 pixels, and information of the size of the sub-image block of the previous encoded image block is not required, and thus, the storage space can be saved.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block are fixed to 8 ⁇ 8 pixels.
- the size of the sub-image block is frame-adapted, and the size of the sub-image block defaults to 4 ⁇ 4.
- the size of the sub-image block is set to 8 ⁇ 8.
- the size of the sub-image block is set to 8 x 8, otherwise the default value of 4 x 4 is used.
- the size of the sub-image block of the current image block is set to 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the last encoded image.
- the information of the size of the sub-image block of the block therefore, can save storage space.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block may also be Other sizes, such as the size of the sub-image block and/or the size of the associated block of the sub-image block, are A ⁇ B, A ⁇ 64, B ⁇ 64, and A and B are integers of 4.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are 4 x 16 pixels, or 16 x 4 pixels.
- step S420 at least part of the candidate motion vectors are sequentially scanned, and when the first candidate motion vector meeting the preset condition is scanned, the scanning is stopped, and the first condition according to the scan meets the preset condition.
- the candidate motion vector determines the reference motion vector.
- Determining the reference motion vector according to the first candidate motion vector that meets the preset condition that is scanned may include: using the first candidate motion vector that meets the preset condition as the target neighboring block.
- the preset condition includes: the reference image of the candidate motion vector is the same as the reference image of the current image block.
- step S450 includes: when the motion vector of the relevant block points to the specific reference image, or the reference image of the current image block is a specific reference image, determining to continue to join the motion vector second candidate list according to the motion vector of the processed relevant block.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a motion vector of the relevant block of the scaling step.
- step S450 includes: when the motion vector of the relevant block points to the specific reference image, or the reference image of the current image block is a specific reference image, discarding the candidate for continuing to join the motion vector second candidate list according to the motion vector of the relevant block Motion vector.
- the current image block is divided into sub-image blocks of size 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the previous image.
- the information of the size of the sub-block of the image block has been encoded, and therefore, the storage space can be saved.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the method of determining the candidate to join the motion vector second candidate list according to the ATMVP technique is described above.
- the second candidate list of the motion vector may be added to other candidates, which is not limited herein.
- FIG. 5 is a schematic block diagram of a video image processing apparatus 500 according to an embodiment of the present application.
- the apparatus 500 is for performing the method embodiment as shown in FIG.
- the device 500 includes the following units.
- An obtaining unit 510 configured to acquire M candidate motion vectors for adding a motion vector second candidate list of a current image block
- a determining unit 520 configured to sequentially scan N candidate motion vectors of the M candidate motion vectors, and determine a reference motion vector according to the scan result, where N is less than M;
- the determining unit 520 is further configured to determine, according to the reference motion vector, the current image block, and the reference image of the current image block, the candidate motion vector that continues to be added to the motion vector second candidate list;
- the determining unit 520 is further configured to determine a motion vector of the current image block according to the motion vector second candidate list.
- the time domain vector of the current image block is obtained by scanning all the candidate motion vectors currently added in the motion vector second candidate list. For example, if the motion vector second candidate list is usually filled with 4 candidate motion vectors, it may happen that four candidate motion vectors need to be scanned to obtain the time domain vector of the current image block.
- N is less than M
- the number of scans of the candidate motion vector in the process of acquiring the reference motion vector of the current image block can be reduced. It should be understood that applying the solution provided by the present application to the first step of the existing ATMVP technology can simplify the redundant operations that exist.
- test configuration was RA configuration and LDB configuration.
- the solution provided by this application was tested.
- the test results showed that By reducing the number of scans, you can also maintain the performance gain of the ATMVP technology.
- the solution provided by the present application can reduce the complexity of the ATMVP technology while maintaining the performance gain of the existing ATMVP technology.
- the acquiring unit 510 is configured to acquire, according to the motion vector of the M neighboring blocks in the current frame, the M candidates for adding the motion vector second candidate list of the current image block. Motion vector.
- the neighboring block is an image block adjacent to the position of the current image block or having a certain positional spacing on the current frame.
- the determining unit 520 is configured to sequentially scan the first N candidate motion vectors of the M candidate motion vectors.
- M is equal to 4 and N is less than 4.
- N is equal to 1 or 2.
- the determining unit 520 is configured to sequentially scan the N candidate motion vectors of the M candidate motion vectors based on the preset condition, and determine the reference motion vector according to the scan result.
- the preset condition includes: the reference motion frame that is pointed to the same candidate motion vector as the reference image of the current image block.
- the determining unit 520 is configured to sequentially scan the N candidate motion vectors, and when scanning the first candidate motion vector that meets the preset condition, stop scanning, and according to the scanned A candidate motion vector that meets a preset condition determines a reference motion vector.
- the determining unit 520 is configured to: when a candidate motion vector that meets a preset condition is not scanned in the N candidate motion vectors, perform a specific candidate motion vector in the motion vector second candidate list.
- the scaling process determines the reference motion vector based on the specific candidate motion vector after the scaling process.
- the specific candidate motion vector is the first motion vector or the last motion vector obtained in the scanning order among the N candidate motion vectors.
- the determining unit 520 is configured to perform a scaling process on the specific candidate motion vector in the motion vector second candidate list, so that the reference frame pointed by the specific candidate motion vector that is subjected to the scaling process and the current image block The reference image is the same; the specific candidate motion vector after the scaling process is used as the reference motion vector.
- the determining unit 520 is configured to use a default value as a reference motion vector when a candidate motion vector that meets a preset condition is not scanned in the N candidate motion vectors.
- the default value is a motion vector (0, 0).
- the determining unit 520 is configured to divide the current image block into multiple sub-image blocks; determine, according to the reference motion vector, a related block of the sub-image block in the reference image of the current image block; The motion vector determines the candidate motion vector that continues to join the motion vector second candidate list.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block are fixed to be greater than or equal to 64 pixels.
- the current image block is a coding unit CU.
- the determining unit 520 is configured to determine, according to the reference motion vector, a related block of the current image block in the reference image of the current image block, and determine to continue to join the motion vector according to the motion vector of the relevant block.
- Candidate motion vector for the candidate list is configured to determine, according to the reference motion vector, a related block of the current image block in the reference image of the current image block, and determine to continue to join the motion vector according to the motion vector of the relevant block.
- the determining unit 520 is configured to: when the motion vector of the relevant block points to a specific reference image, or the reference image of the current image block is a specific reference image, determine to continue according to the motion vector of the processed relevant block. A candidate motion vector in the second candidate list of motion vectors is added, wherein the motion vector of the processed correlation block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a related block of the scaling step. Sport vector.
- the determining unit 520 is configured to: when the motion vector of the relevant block points to a specific reference image, or the reference image of the current image block is a specific reference image, discard the motion to determine to continue to join the motion according to the motion vector of the relevant block.
- Vector candidate motion vector for the second candidate list is configured to: when the motion vector of the relevant block points to a specific reference image, or the reference image of the current image block is a specific reference image, discard the motion to determine to continue to join the motion according to the motion vector of the relevant block.
- the determining unit 520 is configured to: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is the specific reference image, determine to continue to join the motion according to the processed specific candidate motion vector.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a related block of the scaling step. Sport vector.
- the determining unit 520 is configured to: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is a specific reference image, discard the determination to continue to join the motion vector according to the specific candidate motion vector.
- the candidate motion vector of the second candidate list is configured to: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is a specific reference image, discard the determination to continue to join the motion vector according to the specific candidate motion vector.
- the candidate motion vector of the second candidate list is configured to: when the specific candidate motion vector points to the specific reference image, or the reference image of the current image block is a specific reference image, discard the determination to continue to join the motion vector according to the specific candidate motion vector.
- the motion vector second candidate list is a Merge candidate list.
- the reference image of the current image block is a co-located frame of the current image block.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block are fixed to 8 x 8 pixels.
- the setting does not perform the TMVP operation, and may be skipped. Partially redundant operation saves coding and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- both the obtaining unit 510 and the determining unit 520 in this embodiment may be implemented by a processor.
- the embodiment of the present application further provides a video image processing apparatus 600.
- the apparatus 600 is for performing the method embodiment as shown in FIG.
- the device 600 includes the following units.
- a determining unit 610 configured to acquire M candidate motion vectors for adding a motion vector second candidate list of the current image block
- a determining unit 620 configured to sequentially scan at least part of the candidate motion vectors of the M candidate motion vectors, and determine a reference motion vector of the current image block according to the scan result;
- a dividing unit 630 configured to divide the current image block into a plurality of sub-image blocks, wherein the size of the sub-image block is fixed to be greater than or equal to 64 pixels;
- the determining unit 620 is further configured to determine, according to the reference motion vector, a related block of the sub-image block in the reference image of the current image block;
- the determining unit 620 is further configured to determine, according to the motion vector of the relevant block, the candidate motion vector that continues to join the motion vector second candidate list.
- the size of the sub-image block is frame-adapted, and the size of the sub-image block defaults to 4 ⁇ 4.
- the size of the sub-image block is set to 8 ⁇ 8.
- the size of the sub-image block is set to 8 x 8, otherwise the default value of 4 x 4 is used.
- the size of the sub-image block of the current image block is fixed to be greater than or equal to 64 pixels, and information of the size of the sub-image block of the previous encoded image block is not required, and thus, the storage space can be saved.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block are fixed to 8 x 8 pixels.
- the size of the sub-image block of the current image block is set to 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the last encoded image.
- the information of the size of the sub-image block of the block therefore, can save storage space.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the determining unit 620 is configured to sequentially scan at least part of the candidate motion vectors, and when scanning the first candidate motion vector that meets the preset condition, stop scanning, and according to the scanned A candidate motion vector that meets a preset condition determines a reference motion vector.
- the determining unit 620 is configured to use the first candidate motion vector that meets the preset condition as the target neighboring block.
- the preset condition includes: the reference image of the candidate motion vector is the same as the reference image of the current image block.
- the obtaining unit 610, the determining unit 620, and the dividing unit 630 in this embodiment may all be implemented by a processor.
- the motion vector of one image block contains two pieces of information: 1) the image to which the motion vector points; 2) the displacement.
- the motion vector of an image block contains only the information "displacement".
- the image block additionally provides index information for indicating a reference image of the image block.
- the meaning of the motion vector includes: the reference block of the encoded/decoded image block is located on the reference image relative to the encoded/decoded image block and located in the reference image The displacement of the image block.
- step S120 When determining the reference block of the encoded/decoded image block, it is required to determine the encoded/decoded by the index information of the reference image of the encoded/decoded image block and the motion vector of the encoded/decoded image block.
- the reference block of the image block Then, in the video image processing method shown in FIG. 1, step S120 does not scan the candidate motion vector in the motion vector second candidate list, but directly scans the image block corresponding to the candidate motion vector.
- a video image processing method is provided below for a new definition of the motion vector (ie, containing "displacement" information but not "image pointed").
- the methods for determining candidate motion vectors based on the ATMVP technology respectively provided for these two different meanings of "motion vector” are basically the same, and the above explanation also applies to the video image processing method provided below, the difference Mainly in the constructing the motion vector second candidate list, when determining the candidate to join the motion vector second candidate list according to the ATMVP technology, in the video image processing method described above, it is added to the added motion vector second candidate list.
- the motion vector is scanned, and in the video image processing method provided below, the image block corresponding to the motion vector in the motion vector second candidate list is scanned.
- the embodiment of the present application provides a video image processing method, and the method includes the following steps.
- the current image block is an image block to be encoded (or decoded).
- the current image block is a coding unit (CU).
- the image frame in which the current image block is located is referred to as the current frame.
- the neighboring block is an image block that is adjacent to the position of the current image block or has a certain positional spacing on the current image.
- the M neighboring blocks are image blocks that have been encoded (or decoded) in the current frame.
- the order of the four adjacent blocks of the current image block is determined in turn.
- S720 sequentially scan N neighboring blocks in the M neighboring blocks, and determine a target neighboring block according to the scan result, where N is smaller than M.
- the process of determining the target neighboring block according to the scanning result of the N neighboring blocks may be: sequentially determining N neighboring blocks based on the preset condition, and determining the target neighboring block according to the determining result.
- the preset condition is defined such that the reference image of the neighboring block is the same as the reference image of the current image block.
- the reference image of the current image block is the reference image that is the closest to the image of the current image block; or the reference image of the current image block is the reference image preset by the codec end; or, the reference image of the current image block is The reference image specified in the video parameter set, sequence header, sequence parameter set, image header, image parameter set, and strip header.
- the reference image of the current image block is a co-located frame of the current image block
- the co-located frame is a frame for obtaining motion information for prediction in the strip-level information header.
- step S720 only N neighboring blocks among the M neighboring blocks acquired in step S710 are scanned, so that the number of scans can be reduced.
- step S720 the first N neighboring blocks in the M neighboring blocks may be sequentially scanned.
- the first N neighboring blocks acquired in step S720 refer to the N neighboring blocks first determined in the preset order.
- step S720 the last N neighboring blocks of the M neighboring blocks may be sequentially scanned; or, the N neighboring blocks in the middle of the M neighboring blocks may be sequentially scanned. This application does not limit this.
- step S740 includes: determining a reference block of the current image block according to the motion vector of the relevant block and the reference image.
- step S740 includes: constructing a candidate block list of a current image block, the candidate block in the candidate block list includes M neighboring blocks and related blocks; encoding and decoding the current image block according to the reference block of the candidate block in the candidate block list .
- the candidate block list is a list of merge candidates for the current image block. In one example.
- the candidate block list is an AMVP candidate list of the current image block.
- the index of the candidate block of the current block is written into the code stream. After the index is obtained, the candidate block corresponding to the index is found from the candidate block list, the reference block of the current image block is determined according to the reference block of the candidate block, or the current image block is determined according to the motion vector of the candidate block. Sport vector.
- the reference block of the candidate block is directly determined as the reference block of the current image block, or the motion vector of the candidate block is directly determined as the motion vector of the current image block.
- the encoding end also writes the MVD of the current block into the code stream. After acquiring the MVD, the decoding end adds the motion vector of the candidate block to the MVD as the motion vector of the current block, and then determines the reference block of the current block according to the motion vector and the reference image of the current block.
- N is smaller than M
- the number of scans of the candidate neighboring blocks in the process of acquiring the target neighboring block of the current image block is reduced, thereby reducing complexity.
- step S710 it is determined that the current image block is 4 neighboring blocks in the current frame, that is, M is equal to 4.
- step S720 N neighboring blocks of the 4 neighboring blocks are scanned, and N is less than 4.
- N is equal to 1.
- step S720 only the first of the four adjacent blocks is scanned.
- N is equal to 2 or 3.
- step S720 The manner in which the target neighboring block is determined based on the scanning result of the N neighboring blocks in step S720 will be described below.
- step S720 the N neighboring blocks are sequentially scanned, and when the first neighboring block that meets the preset condition is scanned, the scanning is stopped, and according to the scanned first neighboring condition that meets the preset condition.
- the block determines the target neighboring block.
- the preset condition is defined as the reference image of the neighboring block being the same as the reference image of the current image block.
- the definition of the preset condition is that the reference image of the adjacent block is the same as the reference image of the current image block as an example.
- the first neighboring block that meets the preset condition is taken as the target neighboring block.
- the method further includes: performing scaling processing on motion vectors of the specific neighboring blocks in the M neighboring blocks, The current image block is encoded/decoded according to the motion vector after the scaling process.
- the reference block of the current image block is determined according to the motion vector after the scaling process and the reference image of the current image block.
- the specific neighboring block is the first neighboring block or the last neighboring block obtained in the scanning order among the N neighboring blocks.
- the specific neighboring block may also be a neighboring block obtained in other scanning orders among the N neighboring blocks.
- the current image block is encoded/decoded according to the motion vector after the scaling process, including: performing a scaling process on the motion vector of the specific neighboring block, so that the reference frame of the scaled motion vector is pointed to the current image block.
- the reference image is the same; the image block pointed to by the scaled motion vector in the reference image of the current image block is used as the reference block of the current image block.
- step S720 when a neighboring block that meets a preset condition is not scanned in the N neighboring blocks, the default block is used as a candidate reference block of the current image block.
- the default block is the image block pointed to by the motion vector (0,0).
- step S730 The process of determining the relevant block of the current image block according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block in step S730 will be described below.
- determining a related block of the current image block according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block including: dividing the current image block into multiple sub-image blocks; A correlation block of the sub-image block is determined in the reference image of the current image block according to the motion vector of the target neighboring block, and the relevant block of the current image block includes the relevant block of the sub-image block.
- a related block may be referred to as a collocated block or a correlation block.
- the current image block is a CU
- the sub-image block obtained by dividing it may be referred to as a sub-CU.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are fixed to be greater than or equal to 64 pixels.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block are fixed to 8 x 8 pixels.
- the size of the sub-image block is frame-adapted, and the size of the sub-image block defaults to 4 ⁇ 4.
- the size of the sub-image block is set to 8 ⁇ 8.
- the size of the sub-image block is set to 8 x 8, otherwise the default value of 4 x 4 is used.
- the size of the sub-image block of the current image block is set to 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the last encoded image.
- the information of the size of the sub-image block of the block therefore, can save storage space.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block may also be Other sizes, such as the size of the sub-image block and/or the size of the associated block of the sub-image block, are A ⁇ B, A ⁇ 64, B ⁇ 64, and A and B are integers of 4.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are 4 x 16 pixels, or 16 x 4 pixels.
- determining a relevant block of the current image block according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block including: according to the motion vector of the target neighboring block, at the current A related block of the current image block is determined in the reference image of the image block.
- step S740 includes: when the reference image of the relevant block is a specific reference image, or the reference image of the current image block is a specific reference image, determining the current according to the motion vector of the processed relevant block and the reference image of the current image block. a candidate reference block of the image block; wherein the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a motion vector of the relevant block of the scaling step.
- step S740 includes: when the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discarding the candidate reference block of the current image block according to the motion vector of the relevant block.
- step S720 includes: when the motion vector of the specific neighboring block points to the specific reference image, or the reference image of the current image block is the specific reference image, according to the motion vector of the processed relevant block and the reference of the current image block.
- the image determines a reference block of the current image block; wherein the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a motion vector of a related block of the scaling step.
- N is smaller than M
- the number of scans of the candidate neighboring blocks in the process of acquiring the target neighboring block of the current image block can be reduced, thereby reducing complexity.
- the motion vector of one of the N neighboring blocks is scaled to make the reference frame and the current frame The same-bit frame is the same, and then this scaled motion vector is used as the motion vector of the current image block, which can improve the accuracy of the motion vector of the current image block.
- the current image block is divided into sub-image blocks of size 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the size of the sub-block of the previous encoded image block. Information, therefore, can save storage space.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- a motion vector of a certain image block on another image is used to determine a motion vector of the image block.
- the image block is referred to as a first image block
- a certain image block on other images to be utilized is referred to as a time domain reference block or a related block of the first image block. It can be understood that the first image block and the time domain reference block (or related block) of the first image block are located on different images. Then, in determining the motion vector of the first image block using the motion vector of the time domain reference block (or related block), it may be necessary to scale the motion vector of the time domain reference block (or related block). For the convenience of description, the term "related block" is uniformly used in this article.
- the motion vector of the relevant block is required.
- the scaling is performed, and then the motion vector of the current image block is determined according to the scaled motion vector.
- the time distance between the reference image pointed by the motion vector of the relevant block and the image of the relevant block, and the time distance between the reference image of the current image block and the image of the current image block are determined, and the relevant block is determined.
- the scale of the motion vector is determined.
- the motion vector of the correlation block is referred to as MV 2
- the reference frame index of the reference image pointed to by the motion vector MV 2 is x.
- the reference frame index value x is the difference between the sequence number (for example, POC) of the reference image pointed to by MV 2 and the sequence number of the image of the relevant block.
- the reference frame index of the reference image of the first image block is referred to as y.
- the reference frame index value y is the difference between the sequence number of the reference image of the first image block and the sequence number of the image of the first image block.
- the scaling of the motion vector MV 2 is y/x.
- the product of the motion vector MV 2 and y/x may be used as the motion vector of the first image block.
- the motion vector of the current image block is determined according to the motion vector of the relevant block, specifically: when the motion vector of the relevant block points to the specific reference image, or the reference image of the current image block is a specific reference In the image, the motion vector of the current image block is determined according to the motion vector of the processed relevant block, wherein the motion vector of the processed relevant block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a motion vector of the relevant block of the scaling step.
- the motion vector of the current image block is determined according to the motion vector of the relevant block, specifically: when the motion vector of the relevant block points to the specific reference image, or the reference image of the current image block is a specific reference In the case of an image, the motion vector of the current image block is determined from the motion vector of the relevant block.
- the embodiment of the present application further provides a video image processing method, where the method includes the following steps.
- Step S810 may correspond to step S710 in the above embodiment.
- S820 Scan at least a part of the neighboring blocks of the M neighboring blocks in sequence, and determine the target neighboring block according to the scan result.
- a part of the neighboring blocks in the M neighboring blocks are sequentially scanned, and the target neighboring block is determined according to the scanning result.
- all neighboring blocks in the M neighboring blocks are sequentially scanned, and the target neighboring block is determined according to the scanning result.
- the current image block is divided into a plurality of sub-image blocks, wherein the size of the sub-image block is fixed to be greater than or equal to 64 pixels.
- S840 Determine, according to the motion vector of the target neighboring block and the sub-image block, the relevant block of the current image block in the reference image of the current image block.
- the reference image of the current image block is a reference image that is closest to the image in which the current image block is located.
- the reference image of the current image block is a reference image preset by the codec end.
- the reference image of the current image block is a reference image specified in a video parameter set, a sequence header, a sequence parameter set, an image header, an image parameter set, and a slice header.
- S850 encode/decode the current image block according to the motion vector of the relevant block.
- the size of the sub-image block of the current image block is fixed to be greater than or equal to 64 pixels, and information of the size of the sub-image block of the previous encoded image block is not required, and thus, the storage space can be saved.
- the size of the sub-image block and/or the size of the time domain reference block of the sub-image block are fixed to 8 ⁇ 8 pixels.
- the size of the sub-image block of the current image block is set to 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the last encoded image.
- the information of the size of the sub-image block of the block therefore, can save storage space.
- the TMVP operation is not performed, and the partial redundancy operation may be skipped. It effectively saves code and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block may also be Other sizes, such as the size of the sub-image block and/or the size of the associated block of the sub-image block, are A ⁇ B, A ⁇ 64, B ⁇ 64, and A and B are integers of 4.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are 4 x 16 pixels, or 16 x 4 pixels.
- step S820 includes: sequentially scanning at least a portion of the neighboring blocks, and when scanning the first neighboring block that meets the preset condition, stopping scanning, and according to the scanned first neighboring block that meets the preset condition Determine the target neighboring block.
- the first neighboring block that meets the preset condition is taken as the target neighboring block.
- the preset condition is defined as: the reference image of the neighboring block is the same as the reference image of the current image block.
- step S840 includes: determining, according to the motion vector of the target neighboring block and the sub-image block, the relevant block of the sub-image block in the reference image of the current image block, where the relevant block of the current image block, including the sub-image block Related block.
- FIG. 9 is a schematic block diagram of a video image processing apparatus 900 according to an embodiment of the present application.
- the apparatus 900 is for performing the method embodiment as shown in FIG.
- the device 900 includes the following units.
- the obtaining unit 910 is configured to acquire M neighboring blocks of the current image block.
- a determining unit 920 configured to sequentially scan N neighboring blocks in the M neighboring blocks, and determine a target neighboring block according to the scan result, where N is less than M;
- the determining unit 920 is further configured to determine, according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block, the relevant block of the current image block;
- the encoding/decoding unit 930 is configured to encode/decode the current image block according to the motion vector of the relevant block.
- N is smaller than M
- the number of scans of the candidate neighboring blocks in the process of acquiring the target neighboring block of the current image block is reduced, thereby reducing complexity.
- M is equal to 4 and N is less than 4.
- N is equal to 1 or 2.
- the determining unit 920 is configured to sequentially scan the first N neighboring blocks in the M neighboring blocks.
- the acquiring unit 910 is configured to sequentially acquire M neighboring blocks of the current image block in a preset order; the first N neighboring blocks refer to N neighboring blocks that are first determined in a preset order. .
- the determining unit 920 is configured to sequentially scan the N neighboring blocks, and when scanning the first neighboring block that meets the preset condition, stop scanning, and according to the first scanned A neighboring block that meets a preset condition determines a target neighboring block.
- the determining unit 920 is configured to use the first neighboring block that meets the preset condition as the target neighboring block.
- the preset condition includes: the reference image of the neighboring block is the same as the reference image of the current image block.
- the encoding/decoding unit 930 is configured to determine a reference block of the current image block according to the motion vector of the relevant block and the reference image.
- the encoding/decoding unit 930 is configured to construct a candidate block list of a current image block, where candidate blocks in the candidate block list include M neighboring blocks and related blocks; according to candidate blocks in the candidate block list
- the reference block encodes and decodes the current image block.
- the encoding/decoding unit 930 is further configured to: when a neighboring block that meets a preset condition is not scanned in the N neighboring blocks, a motion vector of a specific neighboring block in the M neighboring blocks. The scaling process is performed, and the current image block is encoded/decoded according to the motion vector after the scaling process.
- the encoding/decoding unit 930 is configured to determine a reference block of the current image block according to the motion vector after the scaling process and the reference image of the current image block.
- the specific neighboring block is the first neighboring block or the last neighboring block obtained in the scanning order among the N neighboring blocks.
- the encoding/decoding unit 930 is configured to perform a scaling process on a motion vector of a specific neighboring block, so that the reference frame pointed by the motion vector after the scaling process is the same as the reference image of the current image block;
- the scaled processed motion vector is the image block pointed to in the reference image of the current image block as the reference block of the current image block.
- the determining unit 920 is configured to: when a neighboring block that meets a preset condition is not scanned in the N neighboring blocks, use the default block as a reference block of the current image block.
- the default block is an image block pointed to by a motion vector (0, 0).
- the determining unit 920 is configured to:
- a correlation block of the sub-image block is determined in the reference image of the current image block according to the motion vector of the target neighboring block, and the relevant block of the current image block includes the relevant block of the sub-image block.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block are fixed to be greater than or equal to 64 pixels.
- the setting does not perform the TMVP operation, and may be skipped. Partially redundant operation saves coding and decoding time and improves coding efficiency.
- the TMVP operation in the case where the width and/or height of the current CU is less than 8 pixels, the TMVP operation is not set. In other words, in the case where at least one of the width and the height of the sub-image block and/or the relevant block of the sub-image block is less than 8 pixels, the TMVP operation is not set. For the above situation, the performance impact of skipping the TMVP operation is negligible, which can effectively save the codec time and improve the coding efficiency.
- the current image block is a coding unit CU.
- the determining unit 920 is configured to determine, according to the motion vector of the target neighboring block, a related block of the current image block in the reference image of the current image block.
- the neighboring block is an image block adjacent to the position of the current image block or having a certain positional spacing on the current image.
- the encoding/decoding unit 930 is configured to: when the reference image of the relevant block is a specific reference image, or the reference image of the current image block is a specific reference image, according to the motion vector of the processed related block. And a reference image of the current image block determines a reference block of the current image block;
- the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping the correlation of the scaling step.
- the motion vector of the block is a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping the correlation of the scaling step.
- the encoding/decoding unit 930 is configured to: when the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discard the current image according to the motion vector of the relevant block.
- the reference block of the block is configured to: when the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discard the current image according to the motion vector of the relevant block.
- the reference block of the block is configured to: when the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discard the current image according to the motion vector of the relevant block.
- the reference block of the block is configured to: when the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discard the current image according to the motion vector of the relevant block.
- the determining unit 920 is configured to: when the motion vector of the specific neighboring block points to the specific reference image, or the reference image of the current image block is the specific reference image, according to the motion vector sum of the processed related block
- the reference image of the current image block determines a reference block of the current image block; wherein the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the motion vector of the processed related block includes: a motion vector obtained by scaling a motion vector of the relevant block according to a scaling value of 1 or skipping a related block of the scaling step. Sport vector.
- the obtaining unit 910, the determining unit 920, and the encoding/decoding unit 930 in this embodiment may all be implemented by a processor.
- the embodiment of the present application further provides a video image processing apparatus 1000.
- the apparatus 1000 is for performing the method embodiment as shown in FIG.
- the device 1000 includes the following units.
- the acquiring unit 1010 is configured to acquire M neighboring blocks of the current image block.
- the determining unit 1020 is configured to sequentially scan at least a part of the neighboring blocks of the M neighboring blocks, and determine the target neighboring block according to the scan result;
- a dividing unit 1030 configured to divide the current image block into a plurality of sub-image blocks, wherein the size of the sub-image block is fixed to be greater than or equal to 64 pixels;
- the determining unit 1020 is further configured to determine, according to the motion vector of the target neighboring block and the sub-image block, the relevant block of the current image block in the reference image of the current image block;
- the encoding/decoding unit 1040 is configured to encode/decode the current image block according to the motion vector of the relevant block.
- the size of the sub-image block of the current image block is fixed to be greater than or equal to 64 pixels, and information of the size of the sub-image block of the previous encoded image block is not required, and thus, the storage space can be saved.
- the size of the sub-image block and/or the size of the time domain reference block of the sub-image block are fixed to 8 ⁇ 8 pixels.
- the size of the sub-image block of the current image block is set to 8 ⁇ 8, on the one hand, it can adapt to the storage granularity of the motion vector specified in the video standard VVC, and on the other hand, it is not necessary to store the last encoded image.
- the information of the size of the sub-image block of the block therefore, can save storage space.
- the setting does not perform the TMVP operation, and may be skipped. Partially redundant operation saves coding and decoding time and improves coding efficiency.
- the setting in a case where at least one of the width and the high of the current CU is less than 8, the setting does not perform the TMVP operation, and the performance impact caused by skipping the TMVP operation is negligible, thereby effectively saving the codec. Time to improve coding efficiency.
- the size of the sub-image block and/or the size of the relevant block of the sub-image block may also be Other sizes, such as the size of the sub-image block and/or the size of the associated block of the sub-image block, are A ⁇ B, A ⁇ 64, B ⁇ 64, and A and B are integers of 4.
- the size of the sub-picture block and/or the size of the associated block of the sub-picture block are 4 x 16 pixels, or 16 x 4 pixels.
- At least part of the neighboring blocks of the M neighboring blocks are sequentially scanned, and determining the target neighboring block according to the scanning result includes: sequentially scanning at least part of the neighboring blocks, and when scanning to the first one When the conditional neighboring block is set, the scanning is stopped, and the target neighboring block is determined according to the scanned neighboring block that meets the preset condition.
- the determining unit 1020 is configured to use the first neighboring block that meets the preset condition as the target neighboring block.
- the preset condition includes: the reference image of the neighboring block is the same as the reference image of the current image block.
- the determining unit 1020 is configured to determine, according to the motion vector of the target neighboring block and the sub-image block, the relevant block of the sub-image block in the reference image of the current image block, where the current image block is related. Block, including related blocks of sub-image blocks.
- the obtaining unit 1010, the determining unit 1020, the dividing unit 1030, and the encoding/decoding unit 1040 in this embodiment may all be implemented by a processor.
- the embodiment of the present application further provides a video image processing apparatus 1100.
- Apparatus 1100 can be used to perform the method embodiments described above.
- the apparatus 1100 includes a processor 1110 for storing instructions, a processor 1110 for executing instructions stored by the memory 1120, and execution of instructions stored in the memory 1120 for causing the processor 1110 to perform the method according to the above The method of the examples.
- the device 1100 may further include a communication interface 1130 for communicating with an external device.
- the processor 1110 is configured to control the communication interface 1130 to receive and/or transmit signals.
- the apparatus 500, 600, 900, 1000, and 1100 provided by the present application can be applied to an encoder as well as to a decoder.
- the motion vector second candidate list is explained above, and the motion vector first candidate list will be explained below.
- an affine motion compensation model can be introduced in the codec technology.
- Affine transformation motion compensation describes the affine motion field of an image block through a set of MVs of control points.
- the affine transform motion compensation model uses a four-parameter Affine model, and the set of control points includes two control points (such as the upper left corner and the upper right corner of the image block).
- the affine transform motion compensation model uses a six-parameter Affine model, and the set of control points includes three control points (eg, an upper left corner point, an upper right corner point, and a lower left corner point of the image block).
- the added candidate when constructing the first candidate list of motion vectors, may be an MV of a set of control points, or a Control Point Motion Vector Prediction (CPMVP).
- the motion vector first candidate list may be used in the Merge mode. Specifically, it may be referred to as an Affine Merge mode.
- the motion vector first candidate list may be referred to as an affine merge candidate list.
- the prediction in the motion vector first candidate list is directly used as the CPMV (Control Point Motion Vector) of the current image block, that is, the affine motion estimation process is not required.
- candidates determined according to the ATMVP technique may be added to the motion vector first candidate list.
- control point motion vector group of the relevant block of the current image block is added as a candidate to the motion vector first candidate list.
- the candidate performs prediction in the motion vector first list
- the current image block is predicted according to the control point motion vector group of the relevant block of the current image block.
- the representative motion vector of the relevant block of the current image block is added as a candidate to the motion vector first candidate list as described above.
- the candidate is also marked as determined according to the ATMVP technique.
- the relevant block of the current image block is determined according to the marker and the candidate, and the current image block and the related block are divided into multiple sub-image blocks in the same manner, currently Each sub-image block in the image block is in one-to-one correspondence with each sub-image block in the correlation block; and the motion vector of the corresponding sub-image block in the current image block is respectively performed according to the motion vector of each sub-image block in the correlation block. prediction.
- the representative motion vector of the relevant block is used to replace the unobservable motion vector, and the corresponding sub-image block in the current image block is predicted.
- the candidates determined according to the ATMVP technique are discarded to join the motion vector second candidate list.
- a sub-image block in a correlation block is not available, or a sub-image block in the correlation block adopts an intra coding mode, it is determined that a sub-image block in which a motion vector is not available appears in the correlation block.
- each candidate in the motion vector first candidate list includes a motion vector of a group of control points; when the representative motion vector of the relevant block of the current image block is added to the motion vector first candidate list, The consistency of the data format, the representative motion vector of the relevant block may be inserted into the motion vector of each of the candidate points (that is, the motion vector of each control point in the candidate is assigned to the relevant block) Represents motion vector).
- the representative motion vector of the relevant block of the current image block may refer to a motion vector of a center position of the relevant block, or other motion vector representing the related block, which is not limited herein.
- the method for determining the relevant block of the current image block includes two methods:
- Method 1 sequentially scan N neighboring blocks in the preset M neighboring blocks of the current image block, and determine a target neighboring block according to the scan result, where N is less than M, and M is less than or equal to 4; according to the motion vector of the target neighboring block And the current image block and the reference image of the current image block, and the relevant block of the current image block is determined.
- Method 2 determining, according to the M candidates in the motion vector second candidate list of the current image block, determining M neighboring blocks of the current image block; sequentially scanning N neighboring blocks in the M neighboring blocks, and determining according to the scan result
- the target neighboring block, N is smaller than M, and M is less than or equal to 4; and the relevant block of the current image block is determined according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block.
- the M candidates in the motion vector second candidate list may refer to M neighboring blocks of the current image block.
- the method for determining a candidate to join the motion vector first candidate list includes: determining, from a neighboring block of the current image block, a control point motion of the neighboring block predicted by using the affine transformation mode in a specific scanning order a vector group; a control point motion vector group of each determined neighboring block is added as a candidate to the motion vector first candidate list.
- the neighboring block that uses the affine change mode for prediction refers to that the motion vector of the neighboring block is determined according to the candidate in the affine merge candidate list. That is, the candidate is from the affine motion model of the airspace neighboring block of the current image block using the affine mode; that is, the CPMV of the airspace neighboring block using the affine mode is taken as the CPMVP of the current block.
- control point motion vector group may include motion vectors of two control points of the neighboring block (eg, an upper left corner point and an upper right corner point of the neighboring block), or include three control points of the neighboring block.
- Motion vectors (such as the upper left corner, upper right corner, and lower left corner of the image block) depend on whether the four-parameter Affine model or the six-parameter Affine model is used.
- control point motion vector group of the neighboring block predicted by the affine transformation mode is determined according to a specific scanning order, including:
- FIG. 12 is a schematic diagram of a candidate for acquiring a motion vector first candidate list by a neighboring block of a current image block.
- On the left side of the current image block sequentially scanning in the scanning order of image block A->image block D->image block E, and adding the control point motion vector group of the first image block satisfying the preset condition as a candidate
- the first candidate list of motion vectors On the upper side of the current image block, sequentially scanning in the scanning order of the image block B->image block C, and adding the control point motion vector group of the first image block satisfying the preset condition as a candidate to the first candidate of the motion vector List.
- the candidate is determined to be determined in the scanning sequence.
- a method for determining candidates added to a motion vector first candidate list includes:
- the motion vector first candidate list it is added to the motion vector first candidate list by constructing candidates.
- a preset value for example, 5
- the constructed candidate is to combine the motion information of the neighboring blocks of the current image block partial control point and add it as a CPMVP to the motion vector first candidate list.
- FIG. 13 is a schematic diagram of a candidate for constructing a motion vector first candidate list by neighboring blocks of a current image block.
- the current image block has four control points, which are CP1, CP2, CP3, and CP4.
- image blocks A0 and A1 are spatial neighboring blocks of CP1;
- image blocks A2, B2 and B3 are spatial neighboring blocks of CP2;
- image blocks B0 and B1 are spatial neighboring blocks of CP2, and T is a time domain phase of CP4 Neighboring block.
- the coordinates of the control points CP1, CP2, CP3 and CP4 are: (0, 0), (W, 0), (H, 0) and (W, H), respectively, and W and H represent the width and height of the current CU, respectively.
- the acquisition priority of the adjacent block motion information of each control point is:
- the priority is B2->B3->A2.
- B2 is available
- the MV of B2 is used as the MV of the control point CP1
- B2 is not available
- the MV of B3 is used as the MV of the control point CP1
- MV of A1 is used as the MV of the control point CP1
- B2, B3 and A1 are not available, the motion information of the control point CP1 is not available.
- the acquisition priority is: B1->B0; for CP3, the acquisition priority is: A1->A0; for CP4, the MV of T is directly used as the MV of control point CP4.
- two or more of the MVs of the four control points can be combined to obtain one or more candidates, and two of the combinations are selected: ⁇ CP1, CP2 ⁇ , ⁇ CP1, CP3 ⁇ .
- the combination mode ⁇ CP1, CP3 ⁇ needs to convert the MVs of the selected two control points into the MVs (CP1 and CP2) of the upper left and upper right control points of the current CU according to the four parameter model.
- one or more candidates can be obtained by combining three of the MVs of the four control points, and four combinations are selected: ⁇ CP1, CP2, CP4 ⁇ , ⁇ CP1, CP2, CP3 ⁇ , ⁇ CP2, CP3, CP4 ⁇ , ⁇ CP1, CP3, CP4 ⁇ .
- the combination modes ⁇ CP1, CP2, CP3 ⁇ , ⁇ CP2, CP3, CP4 ⁇ , ⁇ CP1, CP3, CP4 ⁇ need to convert the MVs of the selected three control points into the upper left corner of the current CU according to the six-parameter model, upper right MV (CP1, CP2 and CP3) of the corner and bottom left control points
- the candidate generated by the combined construct is considered to be unavailable.
- the method of determining candidates to join the motion vector first candidate list includes populating using a default vector.
- the default vector can be a zero vector or other vector.
- the candidate that joins the motion vector first candidate list determining whether the number of candidates currently added to the first candidate list has reached a preset value; if not, using The default vector is populated into the first candidate list until the number of candidates in the first candidate list reaches a preset value.
- the affine motion model is used according to the affine motion model.
- the candidate derives a motion vector of the sub-image block in the current image block.
- the candidate adopted is a candidate determined by using the ATMVP technology
- the reference block of each sub-image block in the current image block is determined according to the motion vector of each sub-image block in the relevant block according to the above description
- the reference block of each sub-image block is spliced into reference blocks of the current image block, and the residual of the current image block is calculated according to the reference block.
- a video image processing method provided by an embodiment of the present application is described below by way of example with reference to FIG. 14 and FIG. As shown in FIG. 14, the method includes the following steps.
- S1410 sequentially scan N neighboring blocks in the preset M neighboring blocks of the current image block, and determine a target neighboring block according to the scan result, where N is smaller than M.
- M is less than or equal to 4.
- S1420 Determine, according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block, a related block of the current image block.
- S1430 The current image block and the related block are divided into a plurality of sub-image blocks in the same manner, and each sub-image block in the current image block is in one-to-one correspondence with each sub-image block in the related block.
- S1440 Perform prediction on a corresponding sub-image block in the current image block according to motion vectors of each sub-image block in the relevant block.
- the method includes the following steps.
- S1520 Scan N consecutive neighboring blocks in the M neighboring blocks, and determine a target neighboring block according to the scan result, where N is smaller than M.
- M is less than or equal to 4.
- the specific candidate may be the candidate determined according to the ATMVP technology mentioned above.
- S1560 Perform prediction on the corresponding sub-image block in the current image block according to the motion vector of each sub-image block in the relevant block.
- FIG. 16 is a schematic block diagram of a video image processing apparatus 1600 according to an embodiment of the present application.
- the apparatus 1600 is for performing the method embodiment as shown in FIG.
- the device 1600 includes the following units.
- the construction module 1610 sequentially scans N neighboring blocks in the preset M neighboring blocks of the current image block, and determines a target neighboring block according to the scan result, where N is smaller than M; according to the motion vector of the target neighboring block, the current Determining, by the image block and the reference image of the current image block, a correlation block of the current image block; dividing the current image block and the related block into a plurality of sub-image blocks in the same manner, in the current image block Each sub-image block is in one-to-one correspondence with each sub-image block in the relevant block;
- the prediction module 1620 respectively predicts a corresponding sub-image block in the current image block according to a motion vector of each sub-image block in the correlation block.
- N is equal to 1 or 2.
- the prediction module is further configured to: perform representative motion of the related block before performing prediction on the corresponding sub-image block in the current image block according to motion vectors of each sub-image block in the correlation block The vector is added as a candidate to the first candidate list of motion vectors;
- the prediction module When it is determined that the candidate is adopted, the prediction module respectively predicts a corresponding sub-image block in the current image block according to a motion vector of each sub-image block in the relevant block.
- the predicting the corresponding sub-image block in the current image block according to the motion vector of each sub-image block in the correlation block includes:
- the motion vectors of the sub-image blocks in the correlation block are respectively used as motion vectors of the corresponding sub-image blocks in the current image block.
- the representative motion vector of the correlation block is added as the first candidate to the motion vector first candidate list.
- the representative motion vector of the correlation block includes a motion vector of a center position of the correlation block.
- the prediction module is further configured to: when a sub-image block in which a motion vector is not available in the correlation block, use a representative motion vector of the correlation block as a motion vector of the sub-image block in which the motion vector is not available. And predicting a corresponding sub-image block in the current image block.
- the prediction module is further configured to: when a sub-image block in which a motion vector is not available in the correlation block, and a representative motion vector of the correlation block is not available, discarding each sub-image block according to the correlation block The motion vectors respectively predict the corresponding sub-image blocks in the current image block.
- the prediction module is further configured to: when the sub-image block in the correlation block is not available, or the sub-image block in the correlation block adopts an intra coding mode, determine that no motion is available in the relevant block Vector sub-image block.
- the building block is further configured to: determine other candidates, add the other candidates to the motion vector first candidate list, wherein at least one of the other candidates includes motion of the sub-image block Vector.
- the building block is further configured to: when determining to adopt one of the other candidates, determine a motion vector of the sub-image block in the current image block according to the adopted candidate.
- the at least one candidate includes a set of motion vectors for the control points.
- the prediction module is also used to:
- the adopted candidate is subjected to affine transformation according to an affine transformation model
- each of the at least one candidate includes a motion vector of two control points
- each of the at least one candidate includes a motion vector of three control points.
- the constructing module is further configured to: determine, from a neighboring block of the current image block, a control point motion vector group of the neighboring block predicted by using the affine transform mode in a specific scan order;
- the control point motion vector group of each determined neighboring block is added as one candidate to the motion vector first candidate list.
- determining, from a neighboring block of the current image block, a control point motion vector group of a neighboring block that is predicted by using an affine transformation mode, in a specific scan order includes:
- the building module is further configured to: construct a motion vector of the partial control point according to a neighboring block of the partial control point of the current image block;
- the constructing the motion vector of the partial control point according to the neighboring block of the partial control point of the current image block includes:
- a specific neighboring block of the control point is sequentially scanned in a third scanning order, and a motion vector of a specific neighboring block that satisfies a preset condition is used as a motion vector of the control point.
- the build module is also used to:
- the motion vector of the partial control points of the current image block is discarded and added to the motion vector first candidate list.
- the build module is also used to:
- the motion vector of the current image block is determined according to the motion vector of the candidate.
- determining the motion vector of the current image block according to the motion vector of the candidate includes:
- the candidate for the confirmation is used as a motion vector of the current image block, or the candidate used for the confirmation is scaled as a motion vector of the current image block.
- the constructing a second candidate list of motion vectors includes:
- a candidate joining the motion vector second candidate list is determined according to a motion vector of a plurality of neighboring blocks of the current image block on the current image.
- the plurality of neighboring blocks of the current image block on the current image include the preset M neighboring blocks.
- the build module is also used to:
- the N neighboring blocks refer to N neighboring blocks that are first determined in the predetermined order.
- the build module is also used to:
- the N neighboring blocks in the M neighboring blocks are sequentially scanned, and the target neighboring blocks are determined according to the scan result, including:
- the determining the target neighboring block according to the scanned neighboring block that meets the preset condition including:
- the first neighboring block that meets the preset condition is used as the target neighboring block.
- the preset conditions include:
- the reference image of the neighboring block is the same as the reference image of the current image block.
- the building module is further configured to perform a scaling process on a motion vector of a specific one of the M neighboring blocks when a neighboring block that meets the preset condition is not scanned in the N neighboring blocks
- the prediction module is further configured to predict the current image block according to the motion vector after the scaling process.
- the predicting the current image block according to the motion vector after the scaling process comprises:
- the specific neighboring block is the first neighboring block or the last neighboring block obtained in the scanning order among the N neighboring blocks.
- performing a scaling process on a motion vector of a specific one of the M neighboring blocks, and performing prediction on the current image block according to the motion vector after the scaling process including:
- An image block pointed to by the scaled motion vector in the reference image of the current image block is used as a reference block of the current image block.
- a default block is used as a reference block of the current image block.
- the default block is an image block pointed to by a motion vector (0, 0).
- the size of the sub-image block and/or the size of the associated block of the sub-image block is fixed to be greater than or equal to 64 pixels.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are fixed to 8 x 8 pixels, or 16 x 4 pixels or 4 x 16 pixels.
- the setting is not By performing TMVP operations, partial redundancy operations can be skipped, which saves coding and decoding time and improves coding efficiency.
- the current image block is a coding unit CU.
- determining the relevant block of the current image block according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block including:
- the neighboring block is an image block that is adjacent to or at a positional spacing of the current image block on the current image.
- the predicting the current image block according to the motion vector of the correlation block includes:
- the reference image of the relevant block is a specific reference image, or the reference image of the current image block is a specific reference image, determining, according to the processed motion vector of the correlation block and the reference image of the current image block, a reference block of the current image block;
- the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the processed motion vector of the related block includes:
- the motion vector of the relevant block of the scaling step is skipped.
- the predicting the current image block according to the motion vector of the correlation block includes:
- the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discarding the reference block of the current image block according to the motion vector of the relevant block is discarded.
- the build module is also used to:
- the motion vector of the specific neighboring block points to a specific reference image, or the reference image of the current image block is a specific reference image, determining according to the processed motion vector of the correlation block and the reference image of the current image block a reference block of the current image block;
- the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the processed motion vector of the related block includes:
- the motion vector of the relevant block of the scaling step is skipped.
- M is less than or equal to four.
- FIG. 17 is a schematic block diagram of a video image processing apparatus 1700 according to an embodiment of the present application.
- the apparatus 1700 is for performing a method embodiment as shown in FIG.
- the device 1700 includes the following units.
- a constructing module 1710 configured to determine M neighboring blocks of the current image block according to M candidates in a motion vector second candidate list of the current image block; and sequentially scan N neighboring blocks in the M neighboring blocks Determining, according to the scan result, the target neighboring block, N is smaller than M; determining, according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block, the relevant block of the current image block; The relevant block of the current image block determines a specific candidate in the motion vector first candidate list of the current image block; when it is determined that the specific candidate is adopted, the current image block and the related block are used in the same
- the method is divided into a plurality of sub-image blocks, and each sub-image block in the current image block is in one-to-one correspondence with each sub-image block in the related block;
- the prediction module 1720 is configured to respectively predict a corresponding sub-image block in the current image block according to a motion vector of each sub-image block in the correlation block.
- At least one of the motion vector first candidate lists includes a motion vector of a sub-image block, each of the motion vector second candidate lists including a motion vector of the image block.
- N is equal to 1 or 2.
- the M candidates include motion vectors of M neighboring blocks of the current image block on the current image.
- the N neighboring blocks in the M neighboring blocks are sequentially scanned, and the target neighboring blocks are determined according to the scan result, including:
- the determining the target neighboring block according to the scanned neighboring block that meets the preset condition including:
- the first neighboring block that meets the preset condition is used as the target neighboring block.
- the preset conditions include:
- the reference image of the neighboring block is the same as the reference image of the current image block.
- the building module is further configured to perform a scaling process on a motion vector of a specific one of the M neighboring blocks when a neighboring block that meets the preset condition is not scanned in the N neighboring blocks
- the prediction module is further configured to predict the current image block according to the motion vector after the scaling process.
- the predicting the current image block according to the scaled motion vector includes:
- the specific neighboring block is the first neighboring block or the last neighboring block obtained in the scanning order among the N neighboring blocks.
- performing a scaling process on a motion vector of a specific one of the M neighboring blocks, and performing prediction on the current image block according to the motion vector after the scaling process including:
- An image block pointed to by the scaled motion vector in the reference image of the current image block is used as a reference block of the current image block.
- a default block is used as a reference block of the current image block.
- the default block is an image block pointed to by a motion vector (0, 0).
- the size of the sub-image block and/or the size of the associated block of the sub-image block is fixed to be greater than or equal to 64 pixels.
- the size of the sub-image block and/or the size of the associated block of the sub-image block are fixed to 8 x 8 pixels, or 16 x 4 pixels or 4 x 16 pixels.
- the setting is not By performing TMVP operations, partial redundancy operations can be skipped, which saves coding and decoding time and improves coding efficiency.
- the current image block is a coding unit CU.
- determining the relevant block of the current image block according to the motion vector of the target neighboring block, the current image block, and the reference image of the current image block including:
- the neighboring block is an image block that is adjacent to or at a positional spacing of the current image block on the current image.
- the predicting the current image block according to the motion vector of the correlation block includes:
- the reference image of the relevant block is a specific reference image, or the reference image of the current image block is a specific reference image, determining, according to the processed motion vector of the correlation block and the reference image of the current image block, a reference block of the current image block;
- the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the processed motion vector of the related block includes:
- the motion vector of the relevant block of the scaling step is skipped.
- the predicting the current image block according to the motion vector of the correlation block includes:
- the reference image of the relevant block is a specific reference image, or the reference image of the current block is a specific reference image, discarding the reference block of the current image block according to the motion vector of the relevant block is discarded.
- the building module is further configured to: when the motion vector of the specific neighboring block points to a specific reference image, or the reference image of the current image block is a specific reference image, according to the processed motion vector of the related block And determining a reference block of the current image block with a reference image of the current image block;
- the motion vector of the processed related block is the same as the motion vector of the relevant block before processing.
- the processed motion vector of the related block includes:
- the motion vector of the relevant block of the scaling step is skipped.
- the predicting the corresponding sub-image block in the current image block according to the motion vector of each sub-image block in the correlation block includes:
- the motion vectors of the sub-image blocks in the correlation block are respectively used as motion vectors of corresponding sub-image blocks in the current image block.
- determining, according to the relevant block of the current image block, the specific candidate in the motion vector first candidate list of the current image block including:
- a representative motion vector of a correlation block of the current image block is added to the motion vector first candidate list as the specific candidate.
- the representative motion vector of the correlation block is added as the first candidate to the motion vector first candidate list.
- the representative motion vector of the correlation block includes a motion vector of a center position of the correlation block.
- the prediction module is further configured to: when a sub-image block in which a motion vector is not available in the correlation block, use a representative motion vector of the correlation block as a motion vector of the sub-image block in which the motion vector is not available. And predicting a corresponding sub-image block in the current image block.
- the prediction module is further configured to: when a sub-image block in which a motion vector is not available in the correlation block, and a representative motion vector of the correlation block is not available, discarding each sub-image block according to the correlation block The motion vectors respectively predict the corresponding sub-image blocks in the current image block.
- the prediction module is further configured to: when the sub-image block in the correlation block is not available, or the sub-image block in the correlation block adopts an intra coding mode, determine that no motion is available in the relevant block Vector sub-image block.
- the prediction module is further configured to: when determining, adopting one of the motion vector second candidate lists other than the specific candidate, emulating the adopted candidate according to an affine transformation model Shot transformation
- each candidate includes a motion vector of a group of control points.
- each of the at least one candidate includes a motion vector of two control points
- each of the at least one candidate includes a motion vector of three control points.
- the prediction module is further configured to: determine, from a neighboring block of the current image block, a control point motion vector group of the neighboring block predicted by using the affine transformation mode in a specific scanning order;
- the control point motion vector group of each determined neighboring block is added as one candidate to the motion vector first candidate list.
- determining, from a neighboring block of the current image block, a control point motion vector group of a neighboring block that is predicted by using an affine transformation mode, in a specific scan order includes:
- the building module is further configured to: construct a motion vector of the partial control point according to a neighboring block of the partial control point of the current image block;
- the constructing the motion vector of the partial control point according to the neighboring block of the partial control point of the current image block includes:
- a specific neighboring block of the control point is sequentially scanned in a third scanning order, and a motion vector of a specific neighboring block that satisfies a preset condition is used as a motion vector of the control point.
- the building module is further configured to: when the motion vectors of the partial control points point to different reference frames respectively, discard the motion vector of the partial control points of the current image block into the motion vector first candidate list .
- the building module is further configured to: when the number of candidates in the motion vector first candidate list is greater than a preset value, abandon adding a motion vector of a part of the control points of the current image block to the motion vector First candidate list.
- the building module is further configured to: construct a motion vector second candidate list, wherein the candidate joining the motion vector second candidate list is a motion vector of one image block;
- the motion vector of the current image block is determined according to the motion vector of the candidate.
- determining the motion vector of the current image block according to the motion vector of the candidate includes:
- the candidate for the confirmation is used as a motion vector of the current image block, or the candidate used for the confirmation is scaled as a motion vector of the current image block.
- the constructing a second candidate list of motion vectors includes:
- the constructing module is further configured to: sequentially add motion vectors of the preset M neighboring blocks as M candidates in a preset order, and add the motion vector second candidate list;
- the N neighboring blocks refer to N neighboring blocks that are first determined in the predetermined order.
- the building block is further configured to: when the motion vector of one or more neighboring blocks of the M neighboring blocks is not available, discarding determining to join the motion according to the motion vector of the one or more neighboring blocks Vector candidate for the second candidate list.
- M is less than or equal to four.
- the embodiment of the present application further provides a video image processing method 1800, where the method includes the following steps:
- S1810 Determine a basic motion vector list, where the basic motion vector list includes at least one set of bi-predictive basic motion vector groups, where the bi-predictive basic motion vector group includes a first basic motion vector and a second basic motion vector;
- S1820 Determine two motion vector offsets from a preset offset set, where the two motion vector offsets respectively correspond to the first base motion vector and the second base motion vector;
- S1840 predict the current image block according to the motion vector of the current image block.
- the video image processing method of the embodiment of the present application offsets the basic motion vector in the bi-predictive basic motion vector group based on the preset offset set, and the finite calculation can obtain the more accurate current image block.
- the motion vector makes the predicted residual smaller, so that the coding efficiency can be improved.
- the video image processing method of the embodiment of the present application may be used to improve the Merge with Motion Vector Difference (MMVD) technology, also known as the Ultimate Motion Vector Expression (UMVE) technology. .
- MMVD Merge with Motion Vector Difference
- UMVE Ultimate Motion Vector Expression
- it is applied to the MMVD technology to construct a merge candidate list, also referred to as a motion vector candidate list.
- the video image processing method 1800 may further include the steps of: acquiring a merge candidate list including P combination and motion vector candidates, wherein P is an integer greater than or equal to .
- S1810 determining the basic motion vector list may include: determining the basic motion vector list according to the merge candidate list. For example, when P is greater than or equal to 2, two sets of combined motion vector candidates in the merge candidate list are taken to form the base motion vector list.
- the two sets of combined motion vector candidates may be the first two sets of combined motion vector candidates in the merge candidate list, or may be other two sets of combined motion vector candidates when the first two sets of combined motion vector candidates do not meet the condition.
- the two sets of combined motion vector candidates may be any two sets of combined motion vector candidates that meet the condition in the merge candidate list, which is not limited in this embodiment of the present application.
- the basic motion vector list is formed by filling with a motion vector (0, 0).
- the MMVD technology first constructs a base motion vector list (base MVP) by using a combined motion vector candidate (candidate) in an existing merge candidate list (or various motion vector candidate lists obtained in different types of modes described in the foregoing). List). For example, traversing the merged motion vector candidate in the existing merge candidate list (merge list), if the number of merged motion vector candidates in the existing merge list is greater than 2, the first 2 combinations in the merge list and the motion vector candidate are taken. Form the MMVD's base MVP list; otherwise, use MV(0,0) to populate the base MVP list that forms the MMVD.
- the basic motion vector list may be filled with other default motion vectors, such as (1, 1), (2, 2), etc., which is not limited in this embodiment of the present application.
- each of the two sets of base MVs in the base MVP list may be a unidirectionally predicted base motion vector or a bi-predictive base motion vector group.
- the base MVP list may include more groups or fewer groups of basic MVs, which is not limited in this application. This paper only discusses the case of bi-predictive basic motion vector groups.
- the two basic motion vectors included in the bi-predictive basic motion vector group can be the forward basic motion vector and the backward basic motion vector.
- Basic motion vectors such as two forward base motion vectors or two backward base motion vectors.
- the rate distortion loss meets the preset condition, which may be that the rate distortion loss is less than a preset threshold, or the rate distortion loss is the smallest, for example, the prediction residual is the smallest, and the like.
- the MMVD technology may offset the base motion vector predictor according to a certain rule, and generate a new motion vector predictor candidate as the MMVD motion vector predictor, and put it into the MMVD motion vector candidate list.
- the motion vector offset (offset) in the offset set may have 8 choices (2 1 , 2 2 , . . . , 2 8 ), that is, the preset offset set. Is ⁇ 2,4,8,16,32,64,128,256 ⁇ .
- the base motion vector (also called the base motion vector candidate) in the base MVP list has 2 sets, and the motion vector offset (offset) has 8 choices (2 1 , 2 2 , ..., 2 8 ).
- motion vector offsets may be added or subtracted (2 choices) thereon.
- the MMVD motion vector predictor base motion vector predictor + motion vector offset offset.
- the embodiment of the present application may also select a part of the 64 improved modes, or derive more improved modes from the 64 improved modes, and is not limited to the 64 improved modes.
- the number of the improvement modes may be 32 or 128, and the like, which is not limited by the embodiment of the present application. From these motion vectors, a motion vector that causes the rate distortion loss to satisfy the preset condition is determined as a motion vector of the current image block for encoding and/or decoding.
- the motion vector that causes the rate distortion loss to satisfy the preset condition may also be equivalently determined as a motion vector that is determined from the combination of the plurality of sets of motion vector offsets such that the rate distortion loss satisfies a preset condition.
- the offset combination determines a motion vector of the current image block according to the first base motion vector, the second base motion vector, and the motion vector offset combination that causes the rate distortion loss to satisfy a preset condition.
- the two motion vector offsets in the motion vector offset combination may be the same or different.
- the plurality of sets of motion vector offset combinations including the two motion vector offsets may be a motion vector offset that traverses the preset offset set to form a plurality of sets of motion vector offset combinations.
- one of the motion vector offsets of the plurality of sets of motion vector offsets may be a motion vector offset of the offset set calculated by the preset algorithm, and the calculated motion vector is offset.
- the amount traverses the motion vector offset in the offset set as another motion vector offset in the plurality of sets of motion vector offset combinations to form a plurality of sets of motion vector offset combinations.
- a simple traversal to find a suitable combination of motion vector offsets can reduce the amount of computation as a whole and improve the encoding/decoding efficiency.
- one of the motion vector offsets of the plurality of sets of motion vector offsets may be a motion vector offset of the offset set calculated by the preset algorithm, and the calculated motion vector is offset.
- the quantity is a fixed value
- another motion vector offset in the plurality of sets of motion vector offset combinations is obtained by scaling the fixed value to form a plurality of sets of motion vector offset combinations.
- the multiple sets of motion vector offset combinations including the two motion vector offsets may be formed in other manners, which is not limited in this embodiment of the present application.
- the selected motion vector offset may be scaled to obtain a new motion.
- the first base motion vector and the second base motion vector are then adjusted by a new motion vector offset. Determining, according to the first base motion vector, the second base motion vector, and the two new motion vector offsets, the motion vector of the current image block according to the adjusted; and the current image according to the motion vector of the current image block The block is predicted.
- the motion vector offset when determining the motion vector predictor of the current image block according to the MMVD technique, if the distance of the current image from the reference image of the two base motion vectors is different, the motion vector offset needs to be scaled, and then The scaled motion vector offset is added (or subtracted) to the base motion vector prediction to determine the motion vector of the current image block.
- the two motion vector offsets are used to: the first basis according to the two motion vector offsets
- the motion vector and the second base motion vector are adjusted.
- a ratio of a distance of the current image to a reference image of the first base motion vector and a distance of the current image to a reference image of the second base motion vector is equal to the first base motion vector
- the ratio of the motion vector offset used to the motion vector offset used by the second base motion vector is determined by the distance between the image of the current image block (eg, the first image block) and the reference image of the current image block in the two reference directions, which are the current base motions.
- Vector reference image This implementation can further reduce the number of motion vector offset combinations to be tried, which can further improve the encoding/decoding efficiency.
- the adjustment may be to add two motion vector offsets to the first base motion vector and the second base motion vector, respectively; or the adjustment may be to respectively divide the two motion vector offsets with the first base motion vector and The second basic motion vector is subtracted.
- the optional motion vector offset has 8 choices of ⁇ 2, 4, 8, 16, 32, 64, 128, 256 ⁇ .
- the motion vector offset selected by the current process is X.
- the frame number of the current image is P2
- the frame number of the reference image of the first base motion vector and the frame number of the reference image of the second base motion vector are P0 and P1, respectively.
- the offset X is added to the second base motion vector by a motion vector offset of 2*X.
- the ratio of the distance of the current image to the reference image of the first base motion vector and the distance of the current image to the reference image of the second base motion vector is not a multiple of 2
- an appropriate ratio multiple of 2
- the ratio of the motion vector offset used by the base motion vector to the motion vector offset used by the second base motion vector is as close as possible to the distance of the current image to the reference image of the first base motion vector and the current image to the second basis
- a motion vector offset 4*X is added to the first base motion vector, and a motion vector offset X is added to the second base motion vector.
- the reference image of the current image block is a specific reference image
- the time distance between the specific reference image and the image of the current image block is not defined
- scaling the motion vector offset is meaningless.
- the method when the first base motion vector and/or the second base motion vector point to a specific reference image, at least one of the two motion vector offsets
- the method includes: a motion vector offset obtained by scaling the initial motion vector offset according to a scaling value of 1 or a motion vector offset obtained by skipping the scaling operation.
- the motion vector of the current image block is determined according to the processed motion vector offset and the base motion vector group, wherein The processed motion vector offset is the same as the motion vector offset before processing.
- at least one of the two motion vector offsets after the processing includes: a motion vector offset obtained by scaling the initial motion vector offset according to a scaling value of 1, or , skip the motion vector offset obtained by the scaling operation.
- one of the two motion vector offsets may be calculated by a predetermined algorithm.
- Another motion vector offset eg, when the first base motion vector points to a particular reference image, or the second base motion vector points to a particular reference image, or both the first base motion vector and the second base motion vector point to a particular reference image (eg, The offset2) can be obtained by scaling the offset1 to a scale of 1, or by not scaling the offset1.
- another motion vector offset eg, offset 2 may be obtained by scaling a certain initial offset by a scaling of 1 or without performing a scaling operation.
- the initial motion vector offset may be offset 1 or other initial offsets, which is not limited in this embodiment of the present application.
- the method is performed by an encoding end, the method further comprising: encoding according to the predicted result and transmitting a code stream to the decoding end, where the code stream includes an indication for causing the rate distortion loss to satisfy a preset.
- the index of the conditional motion vector offset combination informs the decoding end of the index of the determined combination of the motion vector offsets, so that the decoding end can know the two motion vector offsets by a small amount of calculation, which can simplify the decoding end.
- the index may be another motion vector offset (for example, The ratio of offset2) to offset1.
- the method is performed by a decoding end, the method further comprising: receiving a code stream sent by the encoding end, where the code stream includes an index for indicating a combination of two motion vector offsets;
- the determining the two motion vector offsets from the preset offset set includes: determining the two motion vector offsets according to the index.
- the encoding end informs the decoding end of the index of the determined combination of the motion vector offsets, so that the decoding end can know the two motion vector offsets by a small amount of calculation, which can simplify the decoding end.
- the index may be another motion vector offset (for example, The ratio of offset2) to offset1.
- FIG. 19 is a schematic block diagram of a video image processing apparatus 1900 according to an embodiment of the present application.
- the apparatus 1900 is for performing the method embodiment as shown in FIG.
- the device 1900 includes the following modules.
- the construction module 1910 is configured to determine a basic motion vector list, where the basic motion vector list includes at least one set of bi-predictive basic motion vector groups, where the bi-predictive basic motion vector group includes a first basic motion vector and a second basic motion Vector; determining, from a preset offset set, two motion vector offsets, the two motion vector offsets respectively corresponding to the first base motion vector and the second base motion vector; Determining a motion vector of the current image block by the first base motion vector, the second base motion vector, and the two motion vector offsets;
- the prediction module 1920 is configured to predict the current image block according to the motion vector of the current image block.
- the video image processing apparatus of the embodiment of the present application offsets the base motion vector in the bi-predictive basic motion vector group based on a preset offset set, and obtains a more accurate current image block by a limited number of calculations.
- the motion vector makes the predicted residual smaller, so that the coding efficiency can be improved.
- the building module 1910 determines two motion vector offsets from a preset offset set, including: the building module determines, from the offset set, that the two motions are included a plurality of sets of motion vector offset combinations of vector offsets; the constructing module 1910 determining a current image based on the first base motion vector, the second base motion vector, and the two motion vector offsets a motion vector of the block, comprising: the constructing module 1910 determining, from the plurality of sets of motion vector offset combinations, a motion vector offset combination that causes a rate distortion loss to satisfy a preset condition, according to the first base motion vector And determining, by the second base motion vector and the motion vector offset combination that causes the rate distortion loss to meet a preset condition, determining a motion vector of the current image block.
- the video image processing apparatus 1900 is used in an encoding end, and the video image processing apparatus 1900 further includes a sending module, configured to: encode according to the predicted result, and send a code stream to the decoding end, where the code An index for indicating a motion vector offset combination that causes the rate distortion loss to satisfy a preset condition is included in the stream.
- the video image processing apparatus 1900 is used by the decoding end, and the video image processing apparatus 1900 further includes a receiving module, configured to: receive a code stream sent by the encoding end, where the code stream includes An index of the combination of the two motion vector offsets is formed; the constructing module 1910 determines the two motion vector offsets from the preset offset set, comprising: determining the two motion vector offsets according to the index.
- a receiving module configured to: receive a code stream sent by the encoding end, where the code stream includes An index of the combination of the two motion vector offsets is formed; the constructing module 1910 determines the two motion vector offsets from the preset offset set, comprising: determining the two motion vector offsets according to the index.
- the method when the first base motion vector and/or the second base motion vector point to a specific reference image, at least one of the two motion vector offsets
- the method includes: a motion vector offset obtained by scaling the initial motion vector offset according to a scaling value of 1 or a motion vector offset obtained by skipping the scaling operation.
- the two motion vector offsets are used to: according to the two motions
- the vector offset adjusts the first base motion vector and the second base motion vector.
- a ratio of a distance of the current image to a reference image of the first base motion vector and a distance of the current image to a reference image of the second base motion vector is equal to A ratio of a motion vector offset used by the first base motion vector to a motion vector offset used by the second base motion vector.
- the building module 1910 is further configured to: obtain a merge candidate list, where the merge candidate list includes a P combination and a motion vector candidate, where P is an integer greater than or equal to 1;
- the constructing module 1910 determines the base motion vector list, and the constructing module 1910 determines the base motion vector list according to the merge candidate list.
- the building module 1910 determines the basic motion vector list according to the merge candidate list, including: when P is greater than or equal to 2, the building module 1910 takes the merge candidate The first two sets of combined motion vector candidates in the list form the base motion vector list.
- the building module 1910 determines the basic motion vector list according to the merge candidate list, including: when P is less than 2, the building block 1910 uses a motion vector (0, 0) Filling forms the base motion vector list.
- the preset offset set is ⁇ 2, 4, 8, 16, 32, 64, 128, 256 ⁇ .
- the current image block is one coding unit CU.
- the current image block is a bi-predicted image block.
- FIG. 20 is a schematic block diagram of a video image processing apparatus 2000 provided by an embodiment of the present application.
- the video image processing apparatus 2000 shown in FIG. 20 may include a processor 2010 and a memory 2020 in which computer instructions are stored, and when the processor 2010 executes the computer instructions, the video image processing apparatus 2000 is caused to Performing the following steps: determining a basic motion vector list, where the basic motion vector list includes at least one set of bi-predictive basic motion vector groups, where the bi-predictive basic motion vector group includes a first base motion vector and a second base motion vector; Determining two motion vector offsets from a preset offset set, the two motion vector offsets respectively corresponding to the first base motion vector and the second base motion vector; according to the first The base motion vector, the second base motion vector, and the two motion vector offsets determine a motion vector of the current image block; and predict the current image block according to the motion vector of the current image block.
- the video image processing apparatus 2000 of the embodiment of the present application may further include a network interface for transmitting a code stream. For example, receiving a code stream transmitted by an encoding device.
- the processor 2010 determines two motion vector offsets from a preset offset set, including: determining, from the offset set, a plurality of groups including two motion vector offsets a motion vector offset combination; the processor 2010 determines a motion vector of the current image block according to the first base motion vector, the second base motion vector, and the two motion vector offsets, including: Determining, in the plurality of sets of motion vector offset combinations, a motion vector offset combination that causes the rate distortion loss to satisfy a preset condition, according to the first base motion vector, the second base motion vector, and the rate-distortion The motion vector offset combination that satisfies the preset condition is lost, and the motion vector of the current image block is determined.
- the video image processing apparatus 2000 is used by the encoding end, and the processor 2010 is further configured to perform encoding according to the predicted result and send a code stream to the decoding end, where the code stream includes an indication for making the rate The index of the motion vector offset combination whose distortion loss satisfies the preset condition.
- the video image processing apparatus 2000 is used by the decoding end, and the processor 2010 is further configured to receive a code stream sent by the encoding end, where the code stream includes an offset for indicating two motion vectors. Forming a combined index; the processor 2010 determining the two motion vector offsets from the preset offset set includes: determining the two motion vector offsets according to the index.
- the method when the first base motion vector and/or the second base motion vector point to a specific reference image, at least one of the two motion vector offsets, includes: a motion vector offset obtained by scaling the initial motion vector offset according to a scaling value of 1 or a motion vector offset obtained by skipping the scaling operation.
- the two motion vector offsets are used to: according to the two motion vectors The offset adjusts the first base motion vector and the second base motion vector.
- a ratio of a distance of the current image to a reference image of the first base motion vector and a distance of the current image to a reference image of the second base motion vector is equal to the The ratio of the motion vector offset used by the first base motion vector to the motion vector offset used by the second base motion vector.
- the processor 2010 is further configured to: acquire a merge candidate list, where the merge candidate list includes a P combination and a motion vector candidate, where P is an integer greater than or equal to 1; the processor 2010 determines The basic motion vector list includes: determining the basic motion vector list according to the merge candidate list.
- the processor 2010 determines the basic motion vector list according to the merge candidate list, including: when P is greater than or equal to 2, taking the first two combined motion vectors in the merge candidate list The candidate forms the base motion vector list.
- the processor 2010 determines the basic motion vector list according to the merge candidate list, including: forming a base motion vector with a motion vector (0, 0) when P is less than 2. List.
- the preset offset set is ⁇ 2, 4, 8, 16, 32, 64, 128, 256 ⁇ .
- the current image block is one coding unit CU.
- the current image block is a bi-predictive image block.
- the video image processing apparatus 2000 shown in FIG. 20 or the video image processing apparatus 1900 shown in FIG. 19 can be used to perform the operations or processes in the above-described method embodiments, and the video image processing apparatus 2000 or the video image processing apparatus 1900 The operations and/or functions of the respective modules and devices are respectively implemented in order to implement the corresponding processes in the foregoing method embodiments. For brevity, no further details are provided herein.
- the embodiment of the present application further provides a video image processing method, including: determining a basic motion vector list, where the basic motion vector list includes a basic motion vector group; and when the basic motion vector group has at least one basic motion vector, pointing to a specific When referring to the image, discarding the motion vector of the current image block based on the base motion vector group and the motion vector offset. That is, when at least one of the base motion vectors in the base motion vector group points to the specific reference image, the corresponding motion vector is discarded in the MV candidate list.
- a merge candidate list is obtained, where the merge candidate list includes a P combination and a motion vector candidate, where P is an integer greater than or equal to 1; the determining the base motion vector list includes: The merge candidate list determines the base motion vector list.
- determining the basic motion vector list according to the merge candidate list including: when P is greater than or equal to 2, taking the first two sets of combined motion vector candidates in the merge candidate list Forming the base motion vector list.
- the determining the basic motion vector list according to the merge candidate list comprises: forming a base motion vector list with a motion vector (0, 0) when P is less than 2. .
- the current image block is a coding unit CU.
- the present application provides a video image processing apparatus, including: a determining module, configured to determine a basic motion vector list, the basic motion vector list includes a basic motion vector group; and a processing module, configured to: when the basic motion When there is at least one base motion vector in the vector group pointing to the specific reference image as a specific reference image, discarding the motion vector of the current image block according to the base motion vector group and the motion vector offset is discarded.
- the video image processing apparatus further includes a building module, configured to: acquire a merge candidate list, where the merge candidate list includes a P combination and a motion vector candidate, where P is greater than or equal to 1
- the determining module is specifically configured to: determine the basic motion vector list according to the merge candidate list.
- the determining module is specifically configured to: when the P is greater than or equal to 2, take the first two sets of combined motion vector candidates in the merge candidate list to form the basic motion vector list.
- the determining module is specifically configured to: when the P is less than 2, fill the basic motion vector list with a motion vector (0, 0).
- the current image block is a coding unit CU.
- the present application also provides a video image processing apparatus including a processor and a memory, wherein the memory stores computer instructions, and when the processor executes the computer instructions, the video image processing apparatus performs the following steps: determining a base motion a vector list, the base motion vector list includes a base motion vector group; when at least one of the base motion vector groups points to a specific reference image, discarding the base motion vector group and the motion vector offset A motion vector of the current image block is determined.
- the devices of the embodiments of the present application may be implemented based on a memory and a processor, each memory is configured to store instructions for executing the method of the embodiments of the present application, and the processor executes the foregoing instructions, so that the device performs the embodiments of the present application. Methods.
- the processor mentioned in the embodiments of the present application may include a central processing pancy (CPU), a network processor (NP), or a combination of a CPU and an NP.
- the processor may further include a hardware chip.
- the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
- the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
- the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erasing an programmable EPROM (EEPROM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD).
- the volatile memory can be a random access memory (RAM) that acts as an external cache.
- RAM random access memory
- SRAM static random access memory
- DRAM dynamic random access memory
- DDR SDRAM double data rate synchronous DRAM
- ESDRAM enhanced synchronous dynamic random access memory
- SLDRAM synchronously connected dynamic random access memory
- DR RAM direct memory bus random access memory
- processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.
- memories described herein are intended to comprise, without being limited to, these and any other suitable types of memory.
- the embodiment of the present application further provides a computer readable storage medium having stored thereon instructions that, when executed on a computer, cause the computer to perform the steps of the foregoing method embodiments.
- the embodiment of the present application further provides a computing device, which includes the above computer readable storage medium.
- the embodiment of the present application further provides a computer program product comprising instructions, wherein when the computer runs the finger of the computer program product, the computer executes the steps of the foregoing method embodiment.
- the embodiment of the present application further provides a computer chip, which causes a computer to perform the steps of the foregoing method embodiments.
- Embodiments of the present application can be applied to the field of aircraft, especially drones.
- circuits, sub-circuits, and sub-units of various embodiments of the present application is merely illustrative. Those of ordinary skill in the art will appreciate that the circuits, sub-circuits, and sub-units of the various examples described in the embodiments disclosed herein can be further separated or combined.
- the device provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- software When implemented in software, it may be implemented in whole or in part in the form of a computer program product.
- the computer program product includes one or more computer instructions.
- the computer instructions When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
- the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), or a semiconductor medium (for example, an SSD) or the like.
- a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
- an optical medium for example, a high-density digital video disc (DVD)
- DVD high-density digital video disc
- SSD semiconductor medium
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
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Abstract
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Claims (223)
- 一种视频图像处理方法,其特征在于,包括:对当前图像块的预设的M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,N小于M;根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块;将所述当前图像块和所述相关块采用相同的方式划分成多个子图像块,所述当前图像块中的各子图像块与所述相关块中的各子图像块一一对应;根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求1所述的方法,其特征在于,N等于1或2。
- 根据权利要求1或2所述的方法,其特征在于,所述根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测,之前还包括:将所述相关块的代表运动矢量作为候选者加入运动矢量第一候选列表;当确定采用所述候选者时,根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求3所述的方法,其特征在于,所述根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测,包括:将所述相关块中各子图像块的运动矢量,分别作为所述当前图像块中对应的子图像块的运动矢量。
- 根据权利要求3所述的方法,其特征在于,将所述相关块的代表运动矢量作为第一个候选者加入运动矢量第一候选列表。
- 根据权利要求3所述的方法,其特征在于,所述相关块的代表运动矢量包括所述相关块的中心位置的运动矢量。
- 根据权利要求3所述的方法,其特征在于,所述方法还包括:当所述相关块中出现不可获得运动矢量的子图像块时,将所述相关块的代表运动矢量作为所述不可获得运动矢量的子图像块的运动矢量,对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求7所述的方法,其特征在于,所述方法还包括:当所述相关块中出现不可获得运动矢量的子图像块,且所述相关块的代表运动矢量不可获得时,放弃根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求8所述的方法,其特征在于,当所述相关块中的子图像块不可获得,或者所述相关块中的子图像块采用帧内编码模式时,确定所述相关块中出现不可获得运动矢量的子图像块。
- 根据权利要求3所述的方法,其特征在于,所述方法还包括:确定其他候选者,将所述其他候选者加入所述运动矢量第一候选列表,其中,所述其他候选者中的至少一个候选者包括子图像块的运动矢量。
- 根据权利要求10所述的方法,其特征在于,所述方法还包括:当确定采用所述其他候选者中的其中一个候选者时,根据所述采用的候选者确定所述当前图像块中的子图像块的运动矢量。
- 根据权利要求10或11所述的方法,其特征在于,所述至少一个候选者包括一组控制点的运动矢量。
- 根据权利要求10至12任一项所述的方法,其特征在于,所述方法还包括:当确定采用所述至少一个候选者中的候选者时,根据仿射变换模型对所述采用的候选者进行仿射变换;根据所述仿射变换后的候选者对所述当前图像块中的子图像块进行预测。
- 根据权利要求13所述的方法,其特征在于,当所述仿射变换模型包括四参仿射变换模型时,所述至少一个候选者中,每个候选者包括2个控制点的运动矢量;当所述仿射变换模型包括六参仿射变换模型时,所述至少一个候选者中,每个候选者包括3个控制点的运动矢量。
- 根据权利要求3至14任一项所述的方法,其特征在于,所述方法还包括:从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组;将每一个确定的邻近块的控制点运动矢量组作为一个候选者加入所述 运动矢量第一候选列表。
- 根据权利要求15所述的方法,其特征在于,所述从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组,包括:在所述当前图像块的左侧邻近块中按第一扫描顺序确定第一邻近块的控制点运动矢量组;在所述当前图像块的上侧邻近块中按第二扫描顺序确定第二邻近块的控制点运动矢量组;将所述第一邻近块的控制点运动矢量组和所述第二邻近块的控制点运动矢量组加入所述运动矢量第一候选列表。
- 根据权利要求3至14任一项所述的方法,其特征在于,所述方法还包括:根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量;将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求17所述的方法,其特征在于,所述根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量,包括:对所述部分控制点中的每个控制点,按第三扫描顺序对所述控制点的特定邻近块依次扫描,将满足预设条件的特定邻近块的运动矢量作为所述控制点的运动矢量。
- 根据权利要求17或18所述的方法,其特征在于,所述方法还包括:当所述部分控制点的运动矢量分别指向不同的参考帧时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求17或18所述的方法,其特征在于,所述方法还包括:当所述运动矢量第一候选列表中的候选者的数量大于预设数值时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求3至15任一项所述的方法,其特征在于,所述方法还包括:构建运动矢量第二候选列表,其中,加入所述运动矢量第二候选列表的 候选者为一个图像块的运动矢量;当确认采用所述运动矢量第二候选列表中的候选者时,根据所述候选者的运动矢量确定所述当前图像块的运动矢量。
- 根据权利要求21所述的方法,其特征在于,所述根据所述候选者的运动矢量确定所述当前图像块的运动矢量,包括:将所述确认采用的候选者作为所述当前图像块的运动矢量,或者对所述确认采用的候选者进行缩放后作为所述当前图像块的运动矢量。
- 根据权利要求21所述的方法,其特征在于,所述构建运动矢量第二候选列表,包括:根据所述当前图像块在当前图像上的若干个邻近块的运动矢量确定加入所述运动矢量第二候选列表的候选者。
- 根据权利要求23所述的方法,其特征在于,所述当前图像块在当前图像上的若干个邻近块包括所述预设的M个邻近块。
- 根据权利要求24所述的方法,其特征在于,按预设顺序依次将所述预设的M个邻近块的运动矢量分别作为M个候选者,加入所述运动矢量第二候选列表;所述N个邻近块,指的是按所述预设顺序首先确定的N个邻近块。
- 根据权利要求24所述的方法,其特征在于,所述方法还包括:当所述M个邻近块中的一个或多个邻近块的运动矢量不可获得时,放弃根据所述一个或多个邻近块的运动矢量确定加入所述运动矢量第二候选列表的候选者。
- 根据权利要求1或26所述的方法,其特征在于,所述对所述M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,包括:对所述N个邻近块依次进行扫描,当扫描到第一个符合预设条件的邻近块时,停止扫描,且根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块。
- 根据权利要求19所述的方法,其特征在于,所述根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块,包括:将所述第一个符合预设条件的邻近块作为所述目标邻近块。
- 根据权利要求19或28所述的方法,其特征在于,所述预设条件包括:邻近块的参考图像与所述当前图像块的参考图像相同。
- 根据权利要求27至29任一项所述的方法,其特征在于,所述方法还包括:当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,根据所述缩放处理后的运动矢量对所述当前图像块进行预测。
- 根据权利要求30所述的方法,其特征在于,所述根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:根据所述缩放处理后的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块。
- 根据权利要求30所述的方法,其特征在于,所述特定邻近块为所述N个邻近块中,按扫描顺序得到的第一个邻近块或者最后一个邻近块。
- 根据权利要求30所述的方法,其特征在于,所述对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:对所述特定邻近块的运动矢量进行缩放处理,使得经过所述缩放处理后的运动矢量指向的参考帧与所述当前图像块的参考图像相同;将经过所述缩放处理后的运动矢量在所述当前图像块的参考图像中指向的图像块作为所述当前图像块的参考块。
- 根据权利要求27至30任一项所述的方法,其特征在于,所述方法还包括:当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,将默认块作为所述当前图像块的参考块。
- 根据权利要求34所述的方法,其特征在于,所述默认块为运动矢量(0,0)指向的图像块。
- 根据权利要求1至35任一项所述的方法,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为大于或等于64个像素。
- 根据权利要求36所述的方法,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,或16×4个像素或4×16个像素。
- 根据权利要求37所述的方法,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,所述方法还包括:设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求1至36任一项所述的方法,其特征在于,所述方法还包括:在所述子图像块和/或所述子图像块的相关块的宽和高中至少一个小于8像素的情况下,设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求1至39任一项所述的方法,其特征在于,所述当前图像块为一个编码单元CU。
- 根据权利要求1至40任一项所述的方法,其特征在于,所述根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块,包括:根据所述目标邻近块的运动矢量,在所述当前图像块的参考图像中确定所述当前图像块的相关块。
- 根据权利要求1至41任一项所述的方法,其特征在于,所述邻近块为在所述当前图像上与所述当前图像块的位置相邻或具有一定位置间距的图像块。
- 根据权利要求1至42任一项所述的方法,其特征在于,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求43所述的视频图像处理方法,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求1至42中任一项所述的方法,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前块的参考图像为特定参考图像时,放弃根据所述相关块的运动矢量确定所述当前图像块的参考块。
- 根据权利要求1至45任一项所述的方法,其特征在于,所述方法还包括:当所述特定邻近块的运动矢量指向特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求46所述的方法,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求1至47任一项所述的方法,其特征在于,M小于等于4。
- 一种视频图像处理方法,其特征在于,包括:根据当前图像块的运动矢量第二候选列表中的M个候选者确定所述当前图像块的M个邻近块;对所述M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,N小于M;根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块;根据所述当前图像块的相关块确定所述当前图像块的运动矢量第一候选列表中的特定候选者;当确定采用所述特定候选者时,将所述当前图像块和所述相关块采用相同的方式划分成多个子图像块,所述当前图像块中的各子图像块与所述相关块中的各子图像块一一对应;根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求49所述的方法,其特征在于,所述运动矢量第一候选列表中的至少一个候选者包括子图像块的运动矢量,所述运动矢量第二候选列表中的每个候选者包括图像块的运动矢量。
- 根据权利要求49或50所述的方法,其特征在于,N等于1或2。
- 根据权利要求49至51任一项所述的方法,其特征在于,所述M个候选者包括所述当前图像块在当前图像上的M个邻近块的运动矢量。
- 根据权利要求52所述的方法,其特征在于,所述对所述M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,包括:对所述N个邻近块依次进行扫描,当扫描到第一个符合预设条件的邻近块时,停止扫描,且根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块。
- 根据权利要求52所述的方法,其特征在于,所述根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块,包括:将所述第一个符合预设条件的邻近块作为所述目标邻近块。
- 根据权利要求53或54所述的方法,其特征在于,所述预设条件包括:邻近块的参考图像与所述当前图像块的参考图像相同。
- 根据权利要求53至55任一项所述的方法,其特征在于,所述方法还包括:当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,根据所述缩放处理后的运动矢量对所述当前图像块进行预测。
- 根据权利要求56所述的方法,其特征在于,所述根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:根据所述缩放处理后的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块。
- 根据权利要求56所述的方法,其特征在于,所述特定邻近块为所述N个邻近块中,按扫描顺序得到的第一个邻近块或者最后一个邻近块。
- 根据权利要求56所述的方法,其特征在于,所述对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:对所述特定邻近块的运动矢量进行缩放处理,使得经过所述缩放处理后的运动矢量指向的参考帧与所述当前图像块的参考图像相同;将经过所述缩放处理后的运动矢量在所述当前图像块的参考图像中指向的图像块作为所述当前图像块的参考块。
- 根据权利要求53至55任一项所述的方法,其特征在于,所述方法还包括:当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,将默认块作为所述当前图像块的参考块。
- 根据权利要求60所述的方法,其特征在于,所述默认块为运动矢量(0,0)指向的图像块。
- 根据权利要求49至61任一项所述的方法,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为大于或等于64个像素。
- 根据权利要求62所述的方法,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,或16×4个像素或4×16个像素。
- 根据权利要求63所述的方法,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,所述方法还包括:设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求49至62任一项所述的方法,其特征在于,所述方法还包括:在所述子图像块和/或所述子图像块的相关块的宽和高中至少一个小于8像素的情况下,设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求49至65任一项所述的方法,其特征在于,所述当前图像块为一个编码单元CU。
- 根据权利要求49至66任一项所述的方法,其特征在于,所述根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块,包括:根据所述目标邻近块的运动矢量,在所述当前图像块的参考图像中确定所述当前图像块的相关块。
- 根据权利要求49至67任一项所述的方法,其特征在于,所述邻近 块为在所述当前图像上与所述当前图像块的位置相邻或具有一定位置间距的图像块。
- 根据权利要求49至68任一项所述的方法,其特征在于,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求69所述的方法,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求49至68中任一项所述的方法,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前块的参考图像为特定参考图像时,放弃根据所述相关块的运动矢量确定所述当前图像块的参考块。
- 根据权利要求49至71任一项所述的方法,其特征在于,所述方法还包括:当所述特定邻近块的运动矢量指向特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求72所述的方法,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求49至73任一项所述的方法,其特征在于,所述根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测,包括:将所述相关块中各子图像块的运动矢量,分别作为所述当前图像块中对应的子图像块的运动矢量。
- 根据权利要求49至73任一项所述的方法,其特征在于,所述根据所述当前图像块的相关块确定所述当前图像块的运动矢量第一候选列表中的特定候选者,包括:将所述当前图像块的相关块的代表运动矢量作为所述特定候选者加入所述运动矢量第一候选列表。
- 根据权利要求75所述的方法,其特征在于,将所述相关块的代表运动矢量作为第一个候选者加入运动矢量第一候选列表。
- 根据权利要求75所述的方法,其特征在于,所述相关块的代表运动矢量包括所述相关块的中心位置的运动矢量。
- 根据权利要求75所述的方法,其特征在于,所述方法还包括:当所述相关块中出现不可获得运动矢量的子图像块时,将所述相关块的代表运动矢量作为所述不可获得运动矢量的子图像块的运动矢量,对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求78所述的方法,其特征在于,所述方法还包括:当所述相关块中出现不可获得运动矢量的子图像块,且所述相关块的代表运动矢量不可获得时,放弃根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求78所述的方法,其特征在于,当所述相关块中的子图像块不可获得,或者所述相关块中的子图像块采用帧内编码模式时,确定所述相关块中出现不可获得运动矢量的子图像块。
- 根据权利要求49至80任一项所述的方法,其特征在于,所述方法还包括:当确定采用所述运动矢量第二候选列表中除所述特定候选者以外的其中一个候选者时,根据仿射变换模型对所述采用的候选者进行仿射变换;根据所述仿射变换后的候选者对所述当前图像块中的子图像块进行预测。
- 根据权利要求81所述的方法,其特征在于,所述运动矢量第二候选列表中除所述特定候选者以外至少一个候选者中,每个候选者包括一组控制点的运动矢量。
- 根据权利要求82所述的方法,其特征在于,当所述仿射变换模型包括四参仿射变换模型时,所述至少一个候选者中,每个候选者包括2个控制点的运动矢量;当所述仿射变换模型包括六参仿射变换模型时,所述至少一个候选者中,每个候选者包括3个控制点的运动矢量。
- 根据权利要求49至83任一项所述的方法,其特征在于,所述方法还包括:从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组;将每一个确定的邻近块的控制点运动矢量组作为一个候选者加入所述运动矢量第一候选列表。
- 根据权利要求84所述的方法,其特征在于,所述从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组,包括:在所述当前图像块的左侧邻近块中按第一扫描顺序确定第一邻近块的控制点运动矢量组;在所述当前图像块的上侧邻近块中按第二扫描顺序确定第二邻近块的控制点运动矢量组;将所述第一邻近块的控制点运动矢量组和所述第二邻近块的控制点运动矢量组加入所述运动矢量第一候选列表。
- 根据权利要求49至85任一项所述的方法,其特征在于,所述方法还包括:根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量;将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求86所述的方法,其特征在于,所述根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量,包括:对所述部分控制点中的每个控制点,按第三扫描顺序对所述控制点的特定邻近块依次扫描,将满足预设条件的特定邻近块的运动矢量作为所述控制点的运动矢量。
- 根据权利要求86或87所述的方法,其特征在于,所述方法还包括:当所述部分控制点的运动矢量分别指向不同的参考帧时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求86或87所述的方法,其特征在于,所述方法还包括:当所述运动矢量第一候选列表中的候选者的数量大于预设数值时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求51至63任一项所述的方法,其特征在于,所述方法还包括:构建运动矢量第二候选列表,其中,加入所述运动矢量第二候选列表的候选者为一个图像块的运动矢量;当确认采用所述运动矢量第二候选列表中的候选者时,根据所述候选者的运动矢量确定所述当前图像块的运动矢量。
- 根据权利要求90所述的方法,其特征在于,所述根据所述候选者的运动矢量确定所述当前图像块的运动矢量,包括:将所述确认采用的候选者作为所述当前图像块的运动矢量,或者对所述确认采用的候选者进行缩放后作为所述当前图像块的运动矢量。
- 根据权利要求90所述的方法,其特征在于,所述构建运动矢量第二候选列表,包括:根据所述当前图像块在当前图像上的M个邻近块的运动矢量确定加入所述运动矢量第二候选列表的所述M个候选者。
- 根据权利要求92所述的方法,其特征在于,按预设顺序依次将所述预设的M个邻近块的运动矢量分别作为M个候选者,加入所述运动矢量第二候选列表,所述N个邻近块,指的是按所述预设顺序首先确定的N个邻近块;和/或当所述M个邻近块中的一个或多个邻近块的运动矢量不可获得时,放弃根据所述一个或多个邻近块的运动矢量确定加入所述运动矢量第二候选 列表的候选者。
- 根据权利要求49至93任一项所述的方法,其特征在于,M小于等于4。
- 一种视频图像处理装置,其特征在于,包括:构建模块,用于对当前图像块的预设的M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,N小于M;根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块;将所述当前图像块和所述相关块采用相同的方式划分成多个子图像块,所述当前图像块中的各子图像块与所述相关块中的各子图像块一一对应;预测模块,根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求95所述的视频图像处理装置,其特征在于,N等于1或2。
- 根据权利要求95或96所述的视频图像处理装置,其特征在于,所述预测模块还用于:在所述根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测之前,将所述相关块的代表运动矢量作为候选者加入运动矢量第一候选列表;当确定采用所述候选者时,所述预测模块根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求97所述的视频图像处理装置,其特征在于,所述根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测,包括:将所述相关块中各子图像块的运动矢量,分别作为所述当前图像块中对应的子图像块的运动矢量。
- 根据权利要求97所述的视频图像处理装置,其特征在于,将所述相关块的代表运动矢量作为第一个候选者加入运动矢量第一候选列表。
- 根据权利要求97所述的视频图像处理装置,其特征在于,所述相关块的代表运动矢量包括所述相关块的中心位置的运动矢量。
- 根据权利要求97所述的视频图像处理装置,其特征在于,所述预 测模块还用于:当所述相关块中出现不可获得运动矢量的子图像块时,将所述相关块的代表运动矢量作为所述不可获得运动矢量的子图像块的运动矢量,对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求101所述的视频图像处理装置,其特征在于,所述预测模块还用于:当所述相关块中出现不可获得运动矢量的子图像块,且所述相关块的代表运动矢量不可获得时,放弃根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求102所述的视频图像处理装置,其特征在于,所述预测模块还用于:当所述相关块中的子图像块不可获得,或者所述相关块中的子图像块采用帧内编码模式时,确定所述相关块中出现不可获得运动矢量的子图像块。
- 根据权利要求97所述的视频图像处理装置,其特征在于,所述构架模块还用于:确定其他候选者,将所述其他候选者加入所述运动矢量第一候选列表,其中,所述其他候选者中的至少一个候选者包括子图像块的运动矢量。
- 根据权利要求104所述的视频图像处理装置,其特征在于,所述构建模块还用于:当确定采用所述其他候选者中的其中一个候选者时,根据所述采用的候选者确定所述当前图像块中的子图像块的运动矢量。
- 根据权利要求104或105所述的视频图像处理装置,其特征在于,所述至少一个候选者包括一组控制点的运动矢量。
- 根据权利要求104至106任一项所述的视频图像处理装置,其特征在于,所述预测模块还用于:当确定采用所述至少一个候选者中的候选者时,根据仿射变换模型对所述采用的候选者进行仿射变换;根据所述仿射变换后的候选者对所述当前图像块中的子图像块进行预测。
- 根据权利要求107所述的视频图像处理装置,其特征在于,当所述仿射变换模型包括四参仿射变换模型时,所述至少一个候选者 中,每个候选者包括2个控制点的运动矢量;当所述仿射变换模型包括六参仿射变换模型时,所述至少一个候选者中,每个候选者包括3个控制点的运动矢量。
- 根据权利要求97至108任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组;将每一个确定的邻近块的控制点运动矢量组作为一个候选者加入所述运动矢量第一候选列表。
- 根据权利要求109所述的视频图像处理装置,其特征在于,所述从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组,包括:在所述当前图像块的左侧邻近块中按第一扫描顺序确定第一邻近块的控制点运动矢量组;在所述当前图像块的上侧邻近块中按第二扫描顺序确定第二邻近块的控制点运动矢量组;将所述第一邻近块的控制点运动矢量组和所述第二邻近块的控制点运动矢量组加入所述运动矢量第一候选列表。
- 根据权利要求97至108任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量;将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求111所述的视频图像处理装置,其特征在于,所述根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量,包括:对所述部分控制点中的每个控制点,按第三扫描顺序对所述控制点的特定邻近块依次扫描,将满足预设条件的特定邻近块的运动矢量作为所述控制点的运动矢量。
- 根据权利要求111或112所述的视频图像处理装置,其特征在于, 所述构建模块还用于:当所述部分控制点的运动矢量分别指向不同的参考帧时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求111或112所述的视频图像处理装置,其特征在于,所述构建模块还用于:当所述运动矢量第一候选列表中的候选者的数量大于预设数值时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求97至109任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:构建运动矢量第二候选列表,其中,加入所述运动矢量第二候选列表的候选者为一个图像块的运动矢量;当确认采用所述运动矢量第二候选列表中的候选者时,根据所述候选者的运动矢量确定所述当前图像块的运动矢量。
- 根据权利要求115所述的视频图像处理装置,其特征在于,所述根据所述候选者的运动矢量确定所述当前图像块的运动矢量,包括:将所述确认采用的候选者作为所述当前图像块的运动矢量,或者对所述确认采用的候选者进行缩放后作为所述当前图像块的运动矢量。
- 根据权利要求115所述的视频图像处理装置,其特征在于,所述构建运动矢量第二候选列表,包括:根据所述当前图像块在当前图像上的若干个邻近块的运动矢量确定加入所述运动矢量第二候选列表的候选者。
- 根据权利要求117所述的视频图像处理装置,其特征在于,所述当前图像块在当前图像上的若干个邻近块包括所述预设的M个邻近块。
- 根据权利要求118所述的视频图像处理装置,其特征在于,所述构建模块还用于:按预设顺序依次将所述预设的M个邻近块的运动矢量分别作为M个候选者,加入所述运动矢量第二候选列表;所述N个邻近块,指的是按所述预设顺序首先确定的N个邻近块。
- 根据权利要求118所述的视频图像处理装置,其特征在于,所述构建模块还用于:当所述M个邻近块中的一个或多个邻近块的运动矢量不可获得时,放弃根据所述一个或多个邻近块的运动矢量确定加入所述运动矢量第二候选列表的候选者。
- 根据权利要求95或120所述的视频图像处理装置,其特征在于,所述对所述M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,包括:对所述N个邻近块依次进行扫描,当扫描到第一个符合预设条件的邻近块时,停止扫描,且根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块。
- 根据权利要求113所述的视频图像处理装置,其特征在于,所述根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块,包括:将所述第一个符合预设条件的邻近块作为所述目标邻近块。
- 根据权利要求113或122所述的视频图像处理装置,其特征在于,所述预设条件包括:邻近块的参考图像与所述当前图像块的参考图像相同。
- 根据权利要求121至123任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,所述预测模块还用于根据所述缩放处理后的运动矢量对所述当前图像块进行预测。
- 根据权利要求124所述的视频图像处理装置,其特征在于,所述根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:根据所述缩放处理后的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块。
- 根据权利要求124所述的视频图像处理装置,其特征在于,所述特定邻近块为所述N个邻近块中,按扫描顺序得到的第一个邻近块或者最后一个邻近块。
- 根据权利要求124所述的视频图像处理装置,其特征在于,所述对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,根据所述缩 放处理后的运动矢量对所述当前图像块进行预测,包括:对所述特定邻近块的运动矢量进行缩放处理,使得经过所述缩放处理后的运动矢量指向的参考帧与所述当前图像块的参考图像相同;将经过所述缩放处理后的运动矢量在所述当前图像块的参考图像中指向的图像块作为所述当前图像块的参考块。
- 根据权利要求121至124任一项所述的视频图像处理装置,其特征在于,当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,将默认块作为所述当前图像块的参考块。
- 根据权利要求128所述的视频图像处理装置,其特征在于,所述默认块为运动矢量(0,0)指向的图像块。
- 根据权利要求95至129任一项所述的视频图像处理装置,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为大于或等于64个像素。
- 根据权利要求130所述的视频图像处理装置,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,或16×4个像素或4×16个像素。
- 根据权利要求131所述的视频图像处理装置,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,所述视频图像处理装置还包括处理模块,用于:设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求95至130任一项所述的视频图像处理装置,其特征在于,所述视频图像处理装置还包括处理模块,用于:在所述子图像块和/或所述子图像块的相关块的宽和高中至少一个小于8像素的情况下,设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求95至133任一项所述的视频图像处理装置,其特征在于,所述当前图像块为一个编码单元CU。
- 根据权利要求95至134任一项所述的视频图像处理装置,其特征在于,所述根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块,包括:根据所述目标邻近块的运动矢量,在所述当前图像块的参考图像中确定所述当前图像块的相关块。
- 根据权利要求85至135任一项所述的视频图像处理装置,其特征在于,所述邻近块为在所述当前图像上与所述当前图像块的位置相邻或具有一定位置间距的图像块。
- 根据权利要求95至136任一项所述的视频图像处理装置,其特征在于,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求137所述的视频图像处理装置,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求95至136中任一项所述的视频图像处理装置,其特征在于,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前块的参考图像为特定参考图像时,放弃根据所述相关块的运动矢量确定所述当前图像块的参考块。
- 根据权利要求95至139任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:当所述特定邻近块的运动矢量指向特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求140所述的视频图像处理装置,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求95至141任一项所述的视频图像处理装置,其特征在于,M小于等于4。
- 一种视频图像处理装置,其特征在于,包括:构建模块,用于根据当前图像块的运动矢量第二候选列表中的M个候选者确定所述当前图像块的M个邻近块;对所述M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,N小于M;根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块;根据所述当前图像块的相关块确定所述当前图像块的运动矢量第一候选列表中的特定候选者;当确定采用所述特定候选者时,将所述当前图像块和所述相关块采用相同的方式划分成多个子图像块,所述当前图像块中的各子图像块与所述相关块中的各子图像块一一对应;预测模块,用于根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求143所述的视频图像处理装置,其特征在于,所述运动矢量第一候选列表中的至少一个候选者包括子图像块的运动矢量,所述运动矢量第二候选列表中的每个候选者包括图像块的运动矢量。
- 根据权利要求143或144所述的视频图像处理装置,其特征在于,N等于1或2。
- 根据权利要求143至145任一项所述的视频图像处理装置,其特征在于,所述M个候选者包括所述当前图像块在当前图像上的M个邻近块的运动矢量。
- 根据权利要求146所述的视频图像处理装置,其特征在于,所述对所述M个邻近块中的N个邻近块依次扫描,根据扫描结果确定目标邻近块,包括:对所述N个邻近块依次进行扫描,当扫描到第一个符合预设条件的邻近块时,停止扫描,且根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块。
- 根据权利要求146所述的视频图像处理装置,其特征在于,所述根据所述扫描到的所述第一个符合预设条件的邻近块确定目标邻近块,包括:将所述第一个符合预设条件的邻近块作为所述目标邻近块。
- 根据权利要求147或148所述的视频图像处理装置,其特征在于,所述预设条件包括:邻近块的参考图像与所述当前图像块的参考图像相同。
- 根据权利要求147至149任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,所述预测模块还用于根据所述缩放处理后的运动矢量对所述当前图像块进行预测。
- 根据权利要求150所述的视频图像处理装置,其特征在于,所述根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:根据所述缩放处理后的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块。
- 根据权利要求150所述的视频图像处理装置,其特征在于,所述特定邻近块为所述N个邻近块中,按扫描顺序得到的第一个邻近块或者最后一个邻近块。
- 根据权利要求150所述的视频图像处理装置,其特征在于,所述对所述M个邻近块中的特定邻近块的运动矢量进行缩放处理,根据所述缩放处理后的运动矢量对所述当前图像块进行预测,包括:对所述特定邻近块的运动矢量进行缩放处理,使得经过所述缩放处理后的运动矢量指向的参考帧与所述当前图像块的参考图像相同;将经过所述缩放处理后的运动矢量在所述当前图像块的参考图像中指向的图像块作为所述当前图像块的参考块。
- 根据权利要求147至149任一项所述的视频图像处理装置,其特征在于,当在所述N个邻近块中未扫描到符合所述预设条件的邻近块时,将默认块作为所述当前图像块的参考块。
- 根据权利要求154所述的视频图像处理装置,其特征在于,所述默认块为运动矢量(0,0)指向的图像块。
- 根据权利要求143至155任一项所述的视频图像处理装置,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为大于 或等于64个像素。
- 根据权利要求156所述的视频图像处理装置,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,或16×4个像素或4×16个像素。
- 根据权利要求157所述的视频图像处理装置,其特征在于,所述子图像块的大小和/或所述子图像块的相关块的大小固定为8×8个像素,所述视频图像处理装置还包括处理模块,用于:设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求143至155任一项所述的视频图像处理装置,其特征在于,所述视频图像处理装置还包括处理模块,用于:在所述子图像块和/或所述子图像块的相关块的宽和高中至少一个小于8像素的情况下,设置不进行时域运动矢量预测TMVP操作。
- 根据权利要求143至159任一项所述的视频图像处理装置,其特征在于,所述当前图像块为一个编码单元CU。
- 根据权利要求143至160任一项所述的视频图像处理装置,其特征在于,所述根据所述目标邻近块的运动矢量、所述当前图像块以及所述当前图像块的参考图像,确定所述当前图像块的相关块,包括:根据所述目标邻近块的运动矢量,在所述当前图像块的参考图像中确定所述当前图像块的相关块。
- 根据权利要求143至161任一项所述的视频图像处理装置,其特征在于,所述邻近块为在所述当前图像上与所述当前图像块的位置相邻或具有一定位置间距的图像块。
- 根据权利要求143至162任一项所述的视频图像处理装置,其特征在于,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求163所述的视频图像处理装置,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求143至162中任一项所述的视频图像处理装置,其特征在于,所述根据所述相关块的运动矢量对所述当前图像块进行预测,包括:当所述相关块的参考图像为特定参考图像,或者所述当前块的参考图像为特定参考图像时,放弃根据所述相关块的运动矢量确定所述当前图像块的参考块。
- 根据权利要求143至165任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:当所述特定邻近块的运动矢量指向特定参考图像,或者所述当前图像块的参考图像为特定参考图像时,根据处理后的所述相关块的运动矢量和所述当前图像块的参考图像确定所述当前图像块的参考块;其中,所述处理后的所述相关块的运动矢量和处理前的相关块的运动矢量相同。
- 根据权利要求166所述的视频图像处理装置,其特征在于,所述处理后的所述相关块的运动矢量,包括:根据数值为1的缩放比例对所述相关块的运动矢量进行缩放后得到的运动矢量,或者,跳过缩放步骤的所述相关块的运动矢量。
- 根据权利要求143至167任一项所述的视频图像处理装置,其特征在于,所述根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测,包括:将所述相关块中各子图像块的运动矢量,分别作为所述当前图像块中对应的子图像块的运动矢量。
- 根据权利要求143至167任一项所述的视频图像处理装置,其特征在于,所述根据所述当前图像块的相关块确定所述当前图像块的运动矢量第一候选列表中的特定候选者,包括:将所述当前图像块的相关块的代表运动矢量作为所述特定候选者加入所述运动矢量第一候选列表。
- 根据权利要求169所述的视频图像处理装置,其特征在于,将所述相关块的代表运动矢量作为第一个候选者加入运动矢量第一候选列表。
- 根据权利要求169所述的视频图像处理装置,其特征在于,所述相关块的代表运动矢量包括所述相关块的中心位置的运动矢量。
- 根据权利要求169所述的视频图像处理装置,其特征在于,所述预测模块还用于:当所述相关块中出现不可获得运动矢量的子图像块时,将所述相关块的代表运动矢量作为所述不可获得运动矢量的子图像块的运动矢量,对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求172所述的视频图像处理装置,其特征在于,所述预测模块还用于:当所述相关块中出现不可获得运动矢量的子图像块,且所述相关块的代表运动矢量不可获得时,放弃根据所述相关块中各子图像块的运动矢量分别对所述当前图像块中对应的子图像块进行预测。
- 根据权利要求172所述的视频图像处理装置,其特征在于,所述预测模块还用于:当所述相关块中的子图像块不可获得,或者所述相关块中的子图像块采用帧内编码模式时,确定所述相关块中出现不可获得运动矢量的子图像块。
- 根据权利要求143至174任一项所述的视频图像处理装置,其特征在于,所述预测模块还用于:当确定采用所述运动矢量第二候选列表中除所述特定候选者以外的其中一个候选者时,根据仿射变换模型对所述采用的候选者进行仿射变换;根据所述仿射变换后的候选者对所述当前图像块中的子图像块进行预测。
- 根据权利要求175所述的视频图像处理装置,其特征在于,所述运动矢量第二候选列表中除所述特定候选者以外至少一个候选者中,每个候选者包括一组控制点的运动矢量。
- 根据权利要求176所述的视频图像处理装置,其特征在于,当所述仿射变换模型包括四参仿射变换模型时,所述至少一个候选者中,每个候选者包括2个控制点的运动矢量;当所述仿射变换模型包括六参仿射变换模型时,所述至少一个候选者 中,每个候选者包括3个控制点的运动矢量。
- 根据权利要求143至177任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组;将每一个确定的邻近块的控制点运动矢量组作为一个候选者加入所述运动矢量第一候选列表。
- 根据权利要求178所述的视频图像处理装置,其特征在于,所述从所述当前图像块的邻近块中,按特定扫描顺序确定采用仿射变换模式进行预测的邻近块的控制点运动矢量组,包括:在所述当前图像块的左侧邻近块中按第一扫描顺序确定第一邻近块的控制点运动矢量组;在所述当前图像块的上侧邻近块中按第二扫描顺序确定第二邻近块的控制点运动矢量组;将所述第一邻近块的控制点运动矢量组和所述第二邻近块的控制点运动矢量组加入所述运动矢量第一候选列表。
- 根据权利要求143至179任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量;将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求180所述的视频图像处理装置,其特征在于,所述根据所述当前图像块的部分控制点的邻近块构造所述部分控制点的运动矢量,包括:对所述部分控制点中的每个控制点,按第三扫描顺序对所述控制点的特定邻近块依次扫描,将满足预设条件的特定邻近块的运动矢量作为所述控制点的运动矢量。
- 根据权利要求180或181所述的视频图像处理装置,其特征在于,所述构建模块还用于:当所述部分控制点的运动矢量分别指向不同的参考帧时,放弃将所述当 前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求180或181所述的视频图像处理装置,其特征在于,所述构建模块还用于:当所述运动矢量第一候选列表中的候选者的数量大于预设数值时,放弃将所述当前图像块的部分控制点的运动矢量加入所述运动矢量第一候选列表。
- 根据权利要求143至157任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:构建运动矢量第二候选列表,其中,加入所述运动矢量第二候选列表的候选者为一个图像块的运动矢量;当确认采用所述运动矢量第二候选列表中的候选者时,根据所述候选者的运动矢量确定所述当前图像块的运动矢量。
- 根据权利要求184所述的视频图像处理装置,其特征在于,所述根据所述候选者的运动矢量确定所述当前图像块的运动矢量,包括:将所述确认采用的候选者作为所述当前图像块的运动矢量,或者对所述确认采用的候选者进行缩放后作为所述当前图像块的运动矢量。
- 根据权利要求184所述的视频图像处理装置,其特征在于,所述构建运动矢量第二候选列表,包括:根据所述当前图像块在当前图像上的M个邻近块的运动矢量确定加入所述运动矢量第二候选列表的所述M个候选者。
- 根据权利要求186所述的视频图像处理装置,其特征在于,所述构建模块还用于按预设顺序依次将所述预设的M个邻近块的运动矢量分别作为M个候选者,加入所述运动矢量第二候选列表,所述N个邻近块,指的是按所述预设顺序首先确定的N个邻近块;和/或所述构建模块还用于当所述M个邻近块中的一个或多个邻近块的运动矢量不可获得时,放弃根据所述一个或多个邻近块的运动矢量确定加入所述运动矢量第二候选列表的候选者。
- 根据权利要求143至187任一项所述的视频图像处理装置,其特征在于,M小于等于4。
- 一种视频图像处理装置,其特征在于,包括:存储器与处理器, 所述存储器用于存储指令,所述处理器用于执行所述存储器存储的指令,并且对所述存储器中存储的指令的执行使得,所述处理器用于执行如权利要求1至48中任一项所述的方法。
- 一种视频图像处理装置,其特征在于,包括:存储器与处理器,所述存储器用于存储指令,所述处理器用于执行所述存储器存储的指令,并且对所述存储器中存储的指令的执行使得,所述处理器用于执行如权利要求49至94中任一项所述的方法。
- 一种计算机存储介质,其特征在于,其上存储有计算机程序,所述计算机程序被计算机执行时使得,所述计算机执行如权利要求1至48中任一项所述的方法。
- 一种计算机存储介质,其特征在于,其上存储有计算机程序,所述计算机程序被计算机执行时使得,所述计算机执行如权利要求49至94中任一项所述的方法。
- 一种包含指令的计算机程序产品,其特征在于,所述指令被计算机执行时使得计算机执行如权利要求1至48中任一项所述的方法。
- 一种包含指令的计算机程序产品,其特征在于,所述指令被计算机执行时使得计算机执行如权利要求49至94中任一项所述的方法。
- 一种视频图像处理方法,其特征在于,包括:确定基础运动矢量列表,所述基础运动矢量列表中包括至少一组双预测基础运动矢量组,所述双预测基础运动矢量组中包括第一基础运动矢量和第二基础运动矢量;从预设的偏移量集中确定两个运动矢量偏移量,所述两个运动矢量偏移量分别对应于所述第一基础运动矢量和所述第二基础运动矢量;根据所述第一基础运动矢量、所述第二基础运动矢量和所述两个的运动矢量偏移量,确定当前图像块的运动矢量;根据所述当前图像块的运动矢量对所述当前图像块进行预测。
- 根据权利要求195所述的方法,其特征在于,所述从预设的偏移量集中确定两个运动矢量偏移量,包括:从所述偏移量集中确定包括两个运动矢量偏移量的多组运动矢量偏移量组合;所述根据所述第一基础运动矢量、所述第二基础运动矢量和所述两个的 运动矢量偏移量,确定当前图像块的运动矢量,包括:从所述多组运动矢量偏移量组合中确定出使得率失真损失满足预设条件的运动矢量偏移量组合,根据所述第一基础运动矢量、所述第二基础运动矢量和所述使得率失真损失满足预设条件的运动矢量偏移量组合,确定当前图像块的运动矢量。
- 根据权利要求195或196所述的方法,其特征在于,所述方法由编码端执行,所述方法还包括:根据预测的结果进行编码并向解码端发送码流,所述码流中包括用于指示使得率失真损失满足预设条件的运动矢量偏移量组合的索引。
- 根据权利要求195所述的方法,其特征在于,所述方法由解码端执行,所述方法还包括:接收编码端发送的码流,所述码流中包括用于指示两个运动矢量偏移量的形成组合的索引;所述从预设的偏移量集中确定两个运动矢量偏移量,包括:根据所述索引确定所述两个运动矢量偏移量。
- 根据权利要求195至198中任一项所述的方法,其特征在于,当所述第一基础运动矢量和/或第二基础运动矢量指向特定参考图像时,所述两个运动矢量偏移量中的至少一个运动矢量偏移量,包括:根据数值为1的缩放比例对初始运动矢量偏移量进行缩放后得到的运动矢量偏移量,或者,跳过缩放操作得到的运动矢量偏移量。
- 根据权利要求195至198中任一项所述的方法,其特征在于,当所述第一基础运动矢量和第二基础运动矢量均指向非特定参考图像时,所述两个运动矢量偏移量用于:根据所述两个运动矢量偏移量对所述第一基础运动矢量和第二基础运动矢量进行调整。
- 根据权利要求200所述的方法,其特征在于,所述当前图像到所述第一基础运动矢量的参考图像的距离与所述当前图像到所述第二基础运动矢量的参考图像的距离之比,等于所述第一基础运动矢量所使用的运动矢量偏移量与所述第二基础运动矢量所使用的运动矢量偏移量之比。
- 根据权利要求195至201中任一项所述的方法,其特征在于,所述方法还包括:获取合并候选列表,所述合并候选列表中包括P组合并运动矢量候选,其中,P为大于或等于1的整数;所述确定基础运动矢量列表,包括:根据所述合并候选列表,确定所述基础运动矢量列表。
- 根据权利要求202所述的方法,其特征在于,所述根据所述合并候选列表,确定所述基础运动矢量列表,包括:在P大于或等于2时,取所述合并候选列表中的两组合并运动矢量候选形成所述基础运动矢量列表。
- 根据权利要求202所述的方法,其特征在于,所述根据所述合并候选列表,确定所述基础运动矢量列表,包括:在P小于2时,以运动矢量(0,0)填充形成所述基础运动矢量列表。
- 根据权利要求195至204任一项所述的方法,其特征在于,所述预设的偏移量集为{2,4,8,16,32,64,128,256}。
- 根据权利要求195至205任一项所述的方法,其特征在于,所述当前图像块为一个编码单元CU。
- 根据权利要求195至206任一项所述的方法,其特征在于,所述当前图像块为双预测图像块。
- 一种视频图像处理装置,其特征在于,包括:构建模块,用于确定基础运动矢量列表,所述基础运动矢量列表中包括至少一组双预测基础运动矢量组,所述双预测基础运动矢量组中包括第一基础运动矢量和第二基础运动矢量;从预设的偏移量集中确定两个运动矢量偏移量,所述两个运动矢量偏移量分别对应于所述第一基础运动矢量和所述第二基础运动矢量;根据所述第一基础运动矢量、所述第二基础运动矢量和所述两个的运动矢量偏移量,确定当前图像块的运动矢量;预测模块,用于根据所述当前图像块的运动矢量对所述当前图像块进行预测。
- 根据权利要求208所述的视频图像处理装置,其特征在于,所述构建模块从预设的偏移量集中确定两个运动矢量偏移量,包括:所述构建模块从所述偏移量集中确定包括两个运动矢量偏移量的多组运动矢量偏移量组合;所述构建模块根据所述第一基础运动矢量、所述第二基础运动矢量和所 述两个的运动矢量偏移量,确定当前图像块的运动矢量,包括:所述构建模块从所述多组运动矢量偏移量组合中确定出使得率失真损失满足预设条件的运动矢量偏移量组合,根据所述第一基础运动矢量、所述第二基础运动矢量和所述使得率失真损失满足预设条件的运动矢量偏移量组合,确定当前图像块的运动矢量。
- 根据权利要求208或209所述的视频图像处理装置,其特征在于,所述视频图像处理装置用于编码端,所述视频图像处理装置还包括发送模块,用于:根据预测的结果进行编码并向解码端发送码流,所述码流中包括用于指示使得率失真损失满足预设条件的运动矢量偏移量组合的索引。
- 根据权利要求208所述的视频图像处理装置,其特征在于,所述视频图像处理装置用于解码端,所述视频图像处理装置还包括接收模块,用于:接收编码端发送的码流,所述码流中包括用于指示两个运动矢量偏移量的形成组合的索引;所述构建模块从预设的偏移量集中确定两个运动矢量偏移量,包括:根据所述索引确定所述两个运动矢量偏移量。
- 根据权利要求208至211中任一项所述的视频图像处理装置,其特征在于,当所述第一基础运动矢量和/或第二基础运动矢量指向特定参考图像时,所述两个运动矢量偏移量中的至少一个运动矢量偏移量,包括:根据数值为1的缩放比例对初始运动矢量偏移量进行缩放后得到的运动矢量偏移量,或者,跳过缩放操作得到的运动矢量偏移量。
- 根据权利要求208至211中任一项所述的视频图像处理装置,其特征在于,当所述第一基础运动矢量和第二基础运动矢量均指向非特定参考图像时,所述两个运动矢量偏移量用于:根据所述两个运动矢量偏移量对所述第一基础运动矢量和第二基础运动矢量进行调整。
- 根据权利要求213所述的视频图像处理装置,其特征在于,所述当前图像到所述第一基础运动矢量的参考图像的距离与所述当前图像到所述第二基础运动矢量的参考图像的距离之比,等于所述第一基础运动矢量所使用的运动矢量偏移量与所述第二基础运动矢量所使用的运动矢量偏移量 之比。
- 根据权利要求208至214中任一项所述的视频图像处理装置,其特征在于,所述构建模块还用于:获取合并候选列表,所述合并候选列表中包括P组合并运动矢量候选,其中,P为大于或等于1的整数;所述构建模块确定基础运动矢量列表,包括:所述构建模块根据所述合并候选列表,确定所述基础运动矢量列表。
- 根据权利要求215所述的视频图像处理装置,其特征在于,所述构建模块根据所述合并候选列表,确定所述基础运动矢量列表,包括:在P大于或等于2时,所述构建模块取所述合并候选列表中的两组合并运动矢量候选形成所述基础运动矢量列表。
- 根据权利要求215所述的视频图像处理装置,其特征在于,所述构建模块根据所述合并候选列表,确定所述基础运动矢量列表,包括:在P小于2时,所述构建模块以运动矢量(0,0)填充形成所述基础运动矢量列表。
- 根据权利要求208至217任一项所述的视频图像处理装置,其特征在于,所述预设的偏移量集为{2,4,8,16,32,64,128,256}。
- 根据权利要求208至218任一项所述的视频图像处理装置,其特征在于,所述当前图像块为一个编码单元CU。
- 根据权利要求208至219任一项所述的视频图像处理装置,其特征在于,所述当前图像块为双预测图像块。
- 一种视频图像处理装置,其特征在于,包括:存储器与处理器,所述存储器用于存储指令,所述处理器用于执行所述存储器存储的指令,并且对所述存储器中存储的指令的执行使得,所述处理器用于执行如权利要求195至207中任一项所述的方法。
- 一种计算机存储介质,其特征在于,其上存储有计算机程序,所述计算机程序被计算机执行时使得,所述计算机执行如权利要求195至207中任一项所述的方法。
- 一种包含指令的计算机程序产品,其特征在于,所述指令被计算机执行时使得计算机执行如权利要求195至207中任一项所述的方法。
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