WO2014056314A1 - 用于运动矢量预测的运动矢量列表建立的方法、装置 - Google Patents

用于运动矢量预测的运动矢量列表建立的方法、装置 Download PDF

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Publication number
WO2014056314A1
WO2014056314A1 PCT/CN2013/073817 CN2013073817W WO2014056314A1 WO 2014056314 A1 WO2014056314 A1 WO 2014056314A1 CN 2013073817 W CN2013073817 W CN 2013073817W WO 2014056314 A1 WO2014056314 A1 WO 2014056314A1
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Prior art keywords
motion vector
block
neighboring block
prediction
vector predictor
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PCT/CN2013/073817
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English (en)
French (fr)
Inventor
林永兵
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华为技术有限公司
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Priority to KR1020187005956A priority Critical patent/KR101970216B1/ko
Priority to CA2845442A priority patent/CA2845442C/en
Priority to RU2014117043/08A priority patent/RU2553060C1/ru
Priority to BR112014010225-2A priority patent/BR112014010225B1/pt
Priority to KR1020177005170A priority patent/KR101835563B1/ko
Priority to SG11201400427VA priority patent/SG11201400427VA/en
Priority to KR1020147007584A priority patent/KR101629220B1/ko
Priority to EP18150524.9A priority patent/EP3402203A1/en
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020167014630A priority patent/KR101711568B1/ko
Priority to AU2013314174A priority patent/AU2013314174B2/en
Priority to JP2014540313A priority patent/JP6068490B2/ja
Priority to EP13836185.2A priority patent/EP2822283A4/en
Publication of WO2014056314A1 publication Critical patent/WO2014056314A1/zh
Priority to US14/311,012 priority patent/US9549181B2/en
Priority to HK15103885.5A priority patent/HK1203723A1/zh
Priority to US15/345,948 priority patent/US10091523B2/en
Priority to US16/054,750 priority patent/US10511854B2/en

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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
    • H04N19/513—Processing of motion vectors
    • 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
    • H04N19/513—Processing of motion vectors
    • H04N19/517—Processing of motion vectors by encoding
    • H04N19/52—Processing of motion vectors by encoding by predictive encoding
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/43—Hardware specially adapted for motion estimation or compensation
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/436—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission

Definitions

  • the present invention relates to the field of video coding, and more particularly to a method and apparatus for establishing a motion vector list for motion vector prediction.
  • the inter-frame prediction technique in HEVC uses the traditional MCP (Motion Compensated TD) method for motion vector prediction, HEVC.
  • MCP Motion Compensated TD
  • the method of multi-motion vector competition improves the accuracy of motion vector prediction, thereby improving coding compression performance.
  • the HEVC inter prediction mode may include, but is not limited to, Merge mode, Ski p mode, and the like, and both are inter-predicted by a method of multi-motion vector competition.
  • a motion vector list is used when performing motion vector prediction.
  • Merge mode and Skip mode up to 4 spatial motion vector predictors and one time domain motion vector predictor are allowed in the motion vector list, and Merge mode and Skip mode share the same motion vector list.
  • the encoder selects an optimal motion vector predictor from the motion vector list as the motion vector predictor of the current PU (Predicted Uniform).
  • the method for establishing a motion vector list may include:
  • the neighboring block in the airspace with the current PU may include: a neighboring block AO (the lower left reference block corresponding to the lower left corner position of the current PU), and a neighboring block A1 (the left reference block corresponding to the lower left corner position of the current PU) ), the adjacent block B0 (the upper right reference block corresponding to the position of the upper right corner of the current PU), the adjacent block B1 (the upper reference block corresponding to the position of the upper right corner of the current PU), and the adjacent block B2 (the upper left reference corresponding to the position of the upper left corner of the current PU) Block);
  • TMVP Tempora l Motion Vector predic tor
  • TMVP Temporala l Motion Vector predic tor
  • the motion vector predictor is sequentially obtained from each neighboring block and the TMVP in the order of the neighboring block A1, the neighboring block B1, the neighboring block B0, the neighboring block A0, the neighboring block B2, and the neighboring block TMVP, and then The obtained motion vector predictors are added to the motion vector list according to the rules in HEVC.
  • the specific motion vector list establishment process is a technique well known to those skilled in the art, and details are not described herein again.
  • the current CU (Cod ing Uni t, coding unit (hereinafter may be referred to as coding unit)) may include at least two PUs, and the motion vector list of at least two PUs is established in a serial manner.
  • the inventor finds that at least the following problems exist in the prior art: If the current CU includes at least two PUs, the motion vector list of at least two PUs is established in a serial manner, so that the same CU At least two of the PUs establish a motion vector list at a slower rate, reducing parallel processing capabilities.
  • Embodiments of the present invention provide a method and apparatus for establishing a motion vector list for motion vector prediction, which solves the problem of establishing a motion vector list of at least two PUs in the same coding unit in a serial manner, and improves Parallel processing power.
  • a method for motion vector list establishment for motion vector prediction including: acquiring a neighboring block on a current prediction block spatial domain, where the current prediction block is located in a current coding unit; Decoding manner, determining a applicable neighboring block of the current prediction block, where the applicable neighboring block is located outside the current coding unit;
  • an apparatus for establishing a motion vector list for motion vector prediction including:
  • a receiver configured to acquire a neighboring block on a current prediction block airspace, where the current prediction block is located in a current coding unit;
  • a processor configured to determine, according to a division manner of the current coding unit, the current prediction block Applicable neighboring blocks, the applicable neighboring blocks are located outside the current coding unit;
  • the method and apparatus for establishing a motion vector list for motion vector prediction after using the foregoing scheme, when establishing a motion vector list of a prediction block, first, acquiring a neighboring block on a current prediction block airspace, The current prediction block is located in the current coding unit; the applicable neighboring block of the current prediction block is determined according to the division manner of the current coding unit, and the applicable neighboring block is located outside the current coding unit; according to the motion vector prediction value of the applicable adjacent block and according to the preset The motion vector predictor is obtained from the applicable neighboring block in sequence, and the acquired motion vector predictor is added to the motion vector list.
  • the motion vector list of the prediction block when the motion vector list of the prediction block is established, the neighboring blocks located in the current coding unit are not considered.
  • the motion vector list of at least two prediction blocks may be established in parallel. The speed of establishing a motion vector list by at least two prediction blocks in the same coding unit is increased, and the parallel processing capability is improved.
  • FIG. 1 is a schematic structural diagram of coding units CU, PU, and neighboring blocks according to the embodiment
  • FIG. 2a to FIG. 2g are schematic structural diagrams of different coding modes of a coding unit CU according to an embodiment
  • FIG. 3 is a flowchart of a method for establishing a motion vector list for motion vector prediction according to the embodiment
  • FIG. 4 is a schematic structural diagram of an apparatus for establishing a motion vector list for motion vector prediction according to an embodiment of the present invention.
  • At least two PUs may be included in the CU, and a motion vector list of at least two PUs is established in a serial manner, that is, after the current PU establishes a motion vector list, the next PU starts to establish a motion vector list.
  • a CU (implementation block in the figure) can be further divided into multiple PUs.
  • the CU can have seven types of partitioning. As shown in Figure 2a to Figure 2c, the current CU is divided into two PUs (PU1 and PU2), and the current CU is divided into four PUs (PU1, PU2). , PU3, PU4), other types are not described again.
  • PU2 can start to establish a motion vector list only after PU1 encoding ends, and PU1 and PU2 use serial mode. Create a list of motion vectors. Specifically, first, PU1 establishes a motion vector list according to the above method, and then PU2 establishes a motion vector list according to the above method.
  • At least two PUs are slower in establishing a motion vector list, which reduces the performance of compression coding.
  • the embodiment provides a method for establishing a motion vector list for motion vector prediction, as shown in FIG. Includes:
  • the motion vector predictor obtains the motion vector predictor from the applicable neighboring block in a preset order, and adds the obtained motion vector predictor to the motion vector list. In this way, when the motion vector list of the prediction block is established, the neighboring blocks located in the current coding unit are not considered.
  • the motion vector list of at least two prediction blocks may be established in parallel. The speed of establishing a motion vector list by at least two prediction blocks in the same coding unit is increased, and the parallel processing capability is improved.
  • This embodiment provides another method for establishing a motion vector list for motion vector prediction.
  • the method is a further extension of the method shown in FIG. 3.
  • the method may include:
  • the neighboring block on the prediction block airspace may include: a neighboring block AO located at the lower left side of the prediction block, a neighboring block A1 located to the left of the prediction block, and an adjacent block B0 located at the upper right side of the prediction block, The adjacent block B1 located on the upper side of the prediction block is located in the adjacent block B2 on the upper left side of the prediction block.
  • the method for obtaining the neighboring blocks in the prediction block airspace, the prediction block, and the neighboring blocks are not limited, and are not known to those skilled in the art, and are not described herein again.
  • the applicable neighboring block of the current prediction block is determined according to the division manner of the current coding unit, and the applicable neighboring block is located outside the current coding unit.
  • the current coding unit CU is divided into the first prediction block PU1 and the second prediction block PU2, and the current prediction block is the second prediction block PU2, the applicable neighboring block of the PU2
  • the second prediction block is included: a neighboring block A0, an adjacent block A1, a neighboring block B0, and a neighboring block B2.
  • the neighboring block B1 is located in the current coding unit CU, and is not used as the applicable adjacent block of the second prediction block PU2.
  • the applicable neighboring block of the PU2 includes the The two prediction blocks PU2 are: adjacent block A0, adjacent block B0, adjacent block B1, and adjacent block B2.
  • the neighboring block A1 is located in the current coding unit CU, and is not the applicable neighboring block of the second prediction block PU2.
  • the applicable neighboring block can be determined by the flag of the adjacent block.
  • the flag bit can be, but is not limited to, used to identify that the neighboring block is not located in the CU. Techniques well known to those skilled in the art will not be described herein.
  • obtaining the motion vector predictor from the applicable neighboring block according to the preset order may include: if the neighboring block is an inter-coded block, according to the neighboring block A1, the neighboring block B1, the neighboring block B0, and the phase The order of the neighboring block A0 and the neighboring block B2 acquires motion vector predictors from the applicable neighboring blocks.
  • the motion vector predictor is obtained from the neighboring block.
  • the applicable neighboring block of the prediction block includes the second prediction block: the neighboring block A0, the neighboring block A1, the head 4
  • the applicable neighboring block of the prediction block includes the second prediction block PU2: the neighboring block A0, the neighboring block B0, the neighboring block B1, and the neighboring block B2, according to the neighboring block A0, the neighboring block B0, and the neighboring block
  • the order of the block B1 and the neighboring block B2 is obtained from the neighboring block A0, the neighboring block B0, the neighboring block B1, and the neighboring block B2. It can be seen that when the current CU is divided into the first and second prediction blocks, the applicable neighboring block of the second prediction block does not include the neighboring block A1 located in the first prediction block, and therefore, the motion vector prediction value is not acquired from A1. .
  • adding the obtained motion vector prediction value to the motion vector list includes:
  • the multiple PUs in the CU have no dependency and can be executed in parallel.
  • the applicable neighboring block of the second prediction block does not include the adjacent block ⁇ located in the first prediction block, and the motion vector predictor of ⁇ does not participate in the determination. process. Therefore, the second prediction block and the first prediction block can perform the process in parallel.
  • the currently applicable neighboring block is the neighboring block B1
  • the currently applicable neighboring block is the neighboring block ⁇ 0
  • the motion vector predictor of the neighboring block AO is the same as the motion vector predictor of the adjacent block A1;
  • the motion vector predictor of the neighboring block B2 is the same as at least one of the motion vector predictor of the adjacent block A1 and the motion vector predictor of the neighboring block B1.
  • adding the obtained motion vector prediction value to the motion vector list may further include:
  • the motion vector predictor of the neighboring block B1 and the motion of the adjacent block A1 that has been added to the motion vector list are determined. Whether the vector prediction values are the same;
  • the motion vector predictor of the neighboring block B0 is the same as the motion vector predictor of the neighboring block B1 that has been added to the motion vector list;
  • the currently applicable neighboring block is the neighboring block AO
  • the motion vector in the TMVP can also be considered in the process of establishing the motion vector list.
  • the motion vector predictor obtained from the applicable neighboring block in a preset order may also be: according to the neighboring block A1, the neighboring block B1, the neighboring block B0, the neighboring block A0, The order of neighboring blocks B2, TMVP is obtained from the applicable neighboring block and/or TMVP.
  • CU is divided into PU1 and PU2
  • the motion vector predictor of the neighboring block A1 is added to the motion vector list only when the motion vector predictor is included in the neighboring block A1;
  • the motion vector predictor of the neighboring block B1 is added to the motion vector list;
  • the motion vector prediction value of the adjacent block AO is added to the motion vector list;
  • the motion vector predictor of the neighboring block B2 is added to the motion vector list.
  • TMVP motion vector predictors from TMVP and add them to the motion vector list.
  • the TMVP of PU1 is obtained by using the time domain reference image of PU1, and if the TMVP of PU1 is available, the motion vector of TMVP is added to the motion vector list.
  • the motion vector is obtained from the adjacent block B1, the adjacent block B0, the adjacent block AO, and the adjacent block B2, And added to the motion vector list.
  • the motion vector predictor of the neighboring block B1 is added to the motion vector list only when the motion vector predictor is included in the neighboring block B1;
  • the motion vector predictor of the neighboring block B0 is added to the motion vector list;
  • the motion vector predictor of the neighboring block AO is added to the motion vector list only when the motion vector predictor is included in the neighboring block AO;
  • the motion vector predictor of the neighboring block B2 is added to the motion vector list.
  • TMVP motion vector predictors from TMVP and add them to the motion vector list.
  • the TMVP of PU1 is obtained by using the time domain reference image of PU1, and if the TMVP of PU1 is available, the motion vector of TMVP is added to the motion vector list.
  • the motion vector list of PU1 and PU2 can be established in parallel.
  • CU is divided into PU1 and PU2
  • PU1 builds a motion vector list Similar to the method of "1, CU is divided into PU1 and PU2,"("1) PU1 establishes a motion vector list", and details are not described herein again.
  • the motion vector is obtained from the adjacent block B1, the adjacent block B0, the adjacent block AO, and the adjacent block B2, And added to the motion vector list.
  • the motion vector predictor of the neighboring block A1 is added to the motion vector list only when the motion vector predictor is included in the neighboring block A1;
  • the motion vector predictor of the neighboring block B0 is added to the motion vector list only when the motion vector predictor is included in the neighboring block B0;
  • the motion vector predictor of the neighboring block B2 is added to the motion vector list.
  • TMVP motion vector predictors from TMVP and add them to the motion vector list.
  • the TMVP of PU1 is obtained by using the time domain reference image of PU1, and if the TMVP of PU1 is available, the motion vector of TMVP is added to the motion vector list.
  • the motion vector list of PU1 and PU2 can be established in parallel.
  • the motion vector list of the prediction block is established, first, the neighboring block on the current prediction block spatial domain is obtained, and the current prediction block is located in the current coding unit; determining the current prediction block according to the division manner of the current coding unit. Applicable neighboring blocks, applicable neighboring blocks are located outside the current coding unit; motion vector predictor values are obtained from applicable neighboring blocks according to motion vector prediction values of the applicable neighboring blocks, and the obtained motion vector predictions are obtained The value is added to the motion vector list.
  • the motion vector list of the prediction block when the motion vector list of the prediction block is established, the adjacent blocks located in the current coding unit are not considered, when coding
  • the motion vector list of at least two prediction blocks may be established in parallel, and the speed of establishing the motion vector list by at least two prediction blocks in the same coding unit is increased, and the parallel processing capability is improved.
  • Some device embodiments are provided below, and the device embodiments are respectively provided corresponding to the foregoing method embodiments.
  • the implementation method of the receiver device included in the specific device and device refer to the method embodiment.
  • the embodiment provides a device for establishing a motion vector list for motion vector prediction. As shown in FIG. 4, the method may include:
  • a receiver 41 configured to acquire a neighboring block on a current prediction block airspace, where the current prediction block is located in a current coding unit;
  • the processor 42 is configured to determine, according to the division manner of the current coding unit, the applicable neighboring block of the current prediction block, and the applicable neighboring block is located outside the current coding unit; according to the motion vector prediction value of the applicable neighboring block and in a preset order A motion vector predictor is obtained from the applicable neighboring block, and the obtained motion vector predictor is added to the motion vector list.
  • the neighboring block on the prediction block spatial domain acquired by the receiver 41 includes: a neighboring block AO located at the lower left side of the prediction block, a neighboring block A1 located on the left side of the prediction block, and a neighboring block located at the upper right side of the prediction block. B0, the adjacent block B1 located on the upper side of the prediction block, and the adjacent block B2 located on the upper left side of the prediction block.
  • the processor 42 is further configured to: if the current coding unit is divided into a first prediction block and a second prediction block, and the current prediction block is a second prediction block, the applicable neighboring block of the prediction block includes the second prediction Block: adjacent block A0, adjacent block A1, adjacent block B0, adjacent block B2;
  • the applicable neighboring block of the prediction block includes the second prediction block: the neighboring block A0, adjacent Block B0, adjacent block Bl, and adjacent block B2.
  • the processor 42 is further configured to: in the order of the adjacent block A1, the adjacent block B1, the adjacent block B0, the adjacent block A0, and the adjacent block B2, if the adjacent block is an inter-coded block, The motion vector predictor is obtained in the applicable neighboring block.
  • the processor 42 is further configured to determine whether the motion vector predictor of the currently applicable neighboring block is the same as the motion vector predictor of the applicable neighboring block other than the currently applicable neighboring block; If not, the motion vector predictor of the currently applicable neighboring block is added to the motion vector list. Further, the processor 42 is further configured to determine whether the motion vector predictor of the currently applicable neighboring block is the same as the motion vector predictor that has been added to the motion vector list;
  • the processor 42 is further configured to: if the currently applicable neighboring block is the neighboring block B1, determine whether the motion vector predictor of the adjacent block B1 is the same as the motion vector predictor of the neighboring block A1;
  • the motion vector predictor of the neighboring block B0 is the same as the motion vector predictor of the neighboring block B1;
  • the motion vector predictor of the neighboring block AO is the same as the motion vector predictor of the adjacent block A1;
  • the motion vector predictor of the neighboring block B2 is the same as at least one of the motion vector predictor of the adjacent block A1 and the motion vector predictor of the neighboring block B1.
  • the processor 42 is further configured to: if the currently applicable neighboring block is the neighboring block B1, determine the motion vector predictor of the neighboring block B1 and the motion vector predictor of the neighboring block A1 that has been added to the motion vector list. Whether they are the same;
  • the motion vector predictor of the neighboring block B0 is the same as the motion vector predictor of the neighboring block B1 that has been added to the motion vector list;
  • the motion vector predictor of the neighboring block AO is the same as the motion vector predictor of the neighboring block A1 that has been added to the motion vector list;
  • the motion vector predictor of the neighboring block B2 is adjacent to the motion vector predictor of the neighboring block A1 that has been added to the motion vector list, and has been added to the motion vector list. Whether at least one of the motion vector predictors of block B1 is the same.
  • the receiver acquires the neighboring block on the current prediction block spatial domain, and the current prediction block is located in the current coding unit; the processor determines according to the division manner of the current coding unit. Applicable neighboring block of the current prediction block, the applicable neighboring block is located outside the current coding unit; according to the motion vector prediction value of the applicable neighboring block and from the applicable phase in a preset order The motion vector predictor is obtained in the neighboring block, and the obtained motion vector predictor is added to the motion vector list. In this way, when the motion vector list of the prediction block is established, the neighboring blocks located in the current coding unit are not considered.
  • the coding unit includes at least two prediction blocks, the motion vector list of at least two prediction blocks may be established in parallel. The speed of establishing a motion vector list by at least two prediction blocks in the same coding unit is increased, and the parallel processing capability is improved.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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Abstract

本发明提供一种用于运动矢量预测的运动矢量列表建立的方法、装置。涉及视频编码领域。解决了釆用串行方式建立同一编码单元中的至少两个PU的运动矢量列表的问题，提高并行处理能力。具体可以包括：获取当前预测块空域上的相邻块，当前预测块位于当前编码单元中；根据当前编码单元的划分方式确定当前预测块的适用相邻块，适用相邻块位于当前编码单元外；根据适用相邻块的运动矢量预测值并按照预设顺序从适用相邻块中获取运动矢量预测值，并将获取到的运动矢量预测值加入到运动矢量列表。可应用于建立运动矢量列表中。

Description

用于运动矢量预测的运动矢量列表建立的方法、 装置 本申请要求了 2012年 10月 08日提交的， 申请号为 201210377579.4, 发 明名称为 "用于运动矢量预测的运动矢量列表建立的方法、 装置" 的中国申 请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及视频编码领域， 尤其涉及用于运动矢量预测的运动矢量列表 建立的方法、 装置。
背景技术
HEVC ( High Eff ic iency Video Coding , 高效视频编码标准） 中的帧间 预则技术， 采用传统 MCP (Mot ion Compensa ted Pred ict ion,运动 卜偿预则） 的方法， 在运动矢量预测方面， HEVC釆用多运动矢量竟争的方法， 提高了运 动矢量预测的精度， 从而提升编码压缩性能。
HEVC帧间预测模式可以包括但不限于： Merge mode(合并模式）、 Ski p mode (跳过模式）等， 且均是利用多运动矢量竟争的方法进行帧间预测的。 在进 行运动矢量预测时， 用到了运动矢量列表。 对于 Merge mode和 Skip mode , 运动矢量列表中允许有最多 4个空域运动矢量预测值和 1个时域运动矢量预 测值， Merge mode和 Skip mode共用同一个运动矢量列表。 编码器从该运动 矢量列表中选出一个最佳的运动矢量预测值作为当前 PU ( Predict ion Uni t , 预测单元〈以下可称为预测块〉 ) 的运动矢量预测值。
其中， 运动矢量列表的建立方法可以包括：
如图 1所示， 与当前 PU在空域上相邻块可以包括： 相邻块 AO (当前 PU 左下角位置对应的左下参考块）、 相邻块 A1 (当前 PU左下角位置对应的左边 参考块）、相邻块 B0 (当前 PU右上角位置对应的右上参考块）、相邻块 B1 (当 前 PU右上角位置对应的上边参考块）、相邻块 B2 (当前 PU左上角位置对应的 左上参考块）； TMVP ( Tempora l Mot ion Vector predic tor , 运动矢量时域预 测值）为当前 PU在时域上相应的运动矢量预测值。 首先， 按照相邻块 Al、 相邻块 Bl、 相邻块 B0、 相邻块 A0、 相邻块 B2、 相邻块 TMVP的顺序依次从各相邻块以及 TMVP中获取运动矢量预测值， 然后， 按照 HEVC中的规则将获取到的各运动矢量预测值加入运动矢量列表中。 具体 的运动矢量列表建立过程为本领域技术人员熟知的技术， 在此不再赘述。
进一步的， 当前 CU ( Cod ing Uni t , 编码单元〈以下可称为编码单元〉）可 以包含至少两个 PU, 釆用串行方式建立至少两个 PU的运动矢量列表的。
在实现上述运动矢量列表建立的过程中， 发明人发现现有技术中至少存 在如下问题： 若当前 CU包含至少两个 PU, 釆用串行方式建立至少两个 PU的 运动矢量列表， 使得同一 CU中的至少两个 PU建立运动矢量列表的速度较慢， 降低并行处理能力。
发明内容 本发明的实施例提供一种用于运动矢量预测的运动矢量列表建立的方 法、 装置， 解决了釆用串行方式建立同一编码单元中的至少两个 PU的运动矢 量列表的问题， 提高并行处理能力。
为达到上述目的， 本发明的实施例釆用如下技术方案：
一方面， 提供一种用于运动矢量预测的运动矢量列表建立的方法， 包括： 获取当前预测块空域上的相邻块， 所述当前预测块位于当前编码单元中； 根据所述当前编码单元的划分方式确定所述当前预测块的适用相邻块， 所述适用相邻块位于所述当前编码单元外；
根据所述适用相邻块的运动矢量预测值并按照预设顺序从所述适用相邻 块中获取运动矢量预测值， 并将获取到的运动矢量预测值加入到所述运动矢 量列表。
另一方面， 提供一种用于运动矢量预测的运动矢量列表建立的装置， 包 括：
接收器， 用于获取当前预测块空域上的相邻块， 所述当前预测块位于当 前编码单元中；
处理器， 用于根据所述当前编码单元的划分方式确定所述当前预测块的 适用相邻块， 所述适用相邻块位于所述当前编码单元外； 根据所述适用相邻
值， 并将获取到的运动矢量预测值加入到所述运动矢量列表。
本发明实施例提供的用于运动矢量预测的运动矢量列表建立的方法、 装 置， 釆用上述方案后， 当建立预测块的运动矢量列表时， 首先， 获取当前预 测块空域上的相邻块， 当前预测块位于当前编码单元中； 根据当前编码单元 的划分方式确定当前预测块的适用相邻块， 适用相邻块位于当前编码单元外； 根据适用相邻块的运动矢量预测值并按照预设顺序从适用相邻块中获取运动 矢量预测值， 并将获取到的运动矢量预测值加入到所述运动矢量列表。 这样， 建立预测块的运动矢量列表时， 不考虑位于当前编码单元中的相邻块， 当编 码单元包含至少两个预测块时， 可以釆用并行方式建立至少两个预测块的运 动矢量列表， 增加了同一编码单元中的至少两个预测块建立运动矢量列表的 速度， 提高了并行处理能力。
附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为本实施例提供的编码单元 CU、 PU以及相邻块的结构示意图； 图 2a至图 2g为本实施例提供的编码单元 CU的不同划分方式下的结构示 意图；
图 3 为本实施例提供的一种用于运动矢量预测的运动矢量列表建立的方 法流程图；
图 4 为本实施例提供的一种用于运动矢量预测的运动矢量列表建立的装 置结构示意图。
具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而 不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例 , 都属于本发明保护的范围。
现有技术中， CU中可以包含至少两个 PU, 釆用串行方式建立至少两个 PU 的运动矢量列表， 即当前 PU建立运动矢量列表完成后， 下一个 PU才开始建 立运动矢量列表。
具体的可以包括：
如图 2a至图 2g所示， 一个 CU (图中的实现框）可以进一步划分成多个 PU, 在 HEVC中， CU可以有 7种 par t i t ion (划分）方式。 如图 2a至图 2c中 的 par t i t ion方式是把当前 CU划分成左右 2个 PU ( PU1和 PU2 ) , 又如图 2d 的 par t i t ion方式是把当前 CU划分成 4个 PU ( PU1、 PU2、 PU3、 PU4 ), 其他 类型不再赘述。
以图 2a所示的 par t i t ion为例，由于，PU2的空域参考块 A1位于 PU2内， 因此，只有当 PU1编码结束后， PU2才可以开始建立运动矢量列表， PU1与 PU2 釆用串行方式建立运动矢量列表。 具体的， 首先， PU1按照上述方法建立运动 矢量列表， 然后， PU2按照上述方法建立运动矢量列表。
这样， 使得至少两个 PU建立运动矢量列表的速度较慢， 降低压缩编码的 性能。
为了解决上述至少两个 PU建立运动矢量列表的速度较慢， 降低压缩编码 的性能的问题， 本实施例提供一种用于运动矢量预测的动矢量列表建立的方 法， 如图 3所示， 可以包括：
301、获取当前预测块空域上的相邻块， 当前预测块位于当前编码单元中；
302、 才艮据当前编码单元的划分方式确定当前预测块的适用相邻块， 适用 相邻块位于当前编码单元外；
303、 根据适用相邻块的运动矢量预测值并按照预设顺序从适用相邻块中 获取运动矢量预测值， 并将获取到的运动矢量预测值加入到运动矢量列表。
釆用上述方案后， 当建立预测块的运动矢量列表时， 首先， 获取当前预 测块空域上的相邻块， 当前预测块位于当前编码单元中； 根据当前编码单元 的划分方式确定当前预测块的适用相邻块， 适用相邻块位于当前编码单元外； 根据适用相邻块的运动矢量预测值并按照预设顺序从适用相邻块中获取运动 矢量预测值， 并将获取到的运动矢量预测值加入到运动矢量列表。 这样， 建 立预测块的运动矢量列表时， 不考虑位于当前编码单元中的相邻块， 当编码 单元包含至少两个预测块时， 可以釆用并行方式建立至少两个预测块的运动 矢量列表， 增加了同一编码单元中的至少两个预测块建立运动矢量列表的速 度， 提高了并行处理能力。
本实施例提供另一种用于运动矢量预测的运动矢量列表建立的方法， 该 方法是对图 3所示的方法的进一步扩展， 如图 3所示， 可以包括：
301、获取当前预测块空域上的相邻块， 当前预测块位于当前编码单元中。 如图 1 所示， 预测块空域上的相邻块可以包括： 位于预测块左下侧的相 邻块 AO , 位于预测块左侧的相邻块 A1 , 位于预测块右上侧的相邻块 B0 , 位于 预测块上侧的相邻块 B1 , 位于预测块左上侧的相邻块 B2。
本实施例对获取预测块空域上的相邻块的方法、 预测块以及相邻块不作 限定， 为本领域技术人员熟知的技术， 在此不再赘述。
302、 才艮据当前编码单元的划分方式确定当前预测块的适用相邻块， 适用 相邻块位于当前编码单元外。
进一步， 如图 2e至图 2g所示， 若当前编码单元 CU被上下划分为第一预 测块 PU1和第二预测块 PU2 , 且当前预测块为第二预测块 PU2 , 则 PU2的适用 相邻块包括第二预测块的： 相邻块 A0、 相邻块 Al、 相邻块 B0、 相邻块 B2。 此时， 相邻块 B1位于当前编码单元 CU中， 不作为第二预测块 PU2的适用相 邻块。
如图 2a至图 2c所示， 若当前编码单元 CU被左右划分为第一预测 PU1块 和第二预测块 PU2 , 且当前预测块为第二预测块 PU2 , 则 PU2的适用相邻块包 括第二预测块 PU2的： 相邻块 A0、 相邻块 B0、 相邻块 Bl、 相邻块 B2。 此时， 相邻块 A1位于当前编码单元 CU中， 不作为第二预测块 PU2的适用相邻块。 进一步的， 可以通过相邻块的标志位确定适用相邻块。 标志位可以为但 不限于用于标识相邻块不位于 CU中。 领域技术人员熟知的技术 ， 在此不再赘述。
303、 根据适用相邻块的运动矢量预测值并按照预设顺序从适用相邻块中 获取运动矢量预测值， 并将获取到的运动矢量预测值加入到运动矢量列表。
进一步的， 按照预设顺序从适用相邻块中获取运动矢量预测值可以包括： 若适用相邻块为帧间编码块， 则按照相邻块 Al、 相邻块 Bl、 相邻块 B0、 相邻块 A0、 相邻块 B2的顺序从适用相邻块中获取运动矢量预测值。
具体的， 若适用相邻块为帧间编码块， 说明该相邻块包含有运动矢量信 息， 则从该相邻块中获取运动矢量预测值。
具体的， 若预测块的适用相邻块包括第二预测块的： 相邻块 A0、 相邻块 Al、 目4|5块 B0、 目4|5块 B2 , 则按照、 目4|5块 A0、 目4|5块 Al、 目4|5块 B0、 目4|5 块 B2的顺序从相邻块 A0、 相邻块 Al、 相邻块 B0、 相邻块 B2中获取运动矢量 预测值； 可见， 当前 CU上下划分为第一和第二预测块时， 第二预测块的适用 相邻块不包括位于第一预测块内的相邻块 B1,因此， 不会从 B1获取运动矢量 预测值。
若预测块的适用相邻块包括第二预测块 PU2的： 相邻块 A0、 相邻块 B0、 相邻块 Bl、 相邻块 B2 , 则按照相邻块 A0、 相邻块 B0、 相邻块 Bl、 相邻块 B2 的顺序从相邻块 A0、 相邻块 B0、 相邻块 Bl、 相邻块 B2中获取运动矢量预测 值。 可见， 当前 CU左右划分为第一和第二预测块时， 第二预测块的适用相邻 块不包括位于第一预测块内的相邻块 A1 ,因此， 不会从 A1获取运动矢量预测 值。
进一步的， 若获取到的运动矢量预测值为当前适用相邻块的运动矢量预 测值， 则将获取到的运动矢量预测值加入到运动矢量列表包括：
判断当前适用相邻块的运动矢量预测值与除当前适用相邻块以外的其他 适用相邻块的运动矢量预测值是否相同； 若不相同， 则将当前适用相邻块的 运动矢量预测值加入运动矢量列表。
可见， 上述过程中， 由于适用相邻块不包括位于当前 CU内的相邻块， 因 此 CU内的多个 PU,不存在依赖性， 可以并行执行。 例如， 当前 CU左右划分为 第一和第二预测块时， 第二预测块的适用相邻块不包括位于第一预测块内的 相邻块 ΑΙ , ΑΙ 的运动矢量预测值不会参与该判断过程。 因此第二预测块与第 一预测块可以并行执行该过程。
具体的， 作为本实施例的一种实施方式， 若当前适用相邻块为相邻块 B1 , 则判断相邻块 B1的运动矢量预测值与相邻块 A1的运动矢量预测值是否相同； 若当前适用相邻块为相邻块 Β0 ,则判断相邻块 Β0的运动矢量预测值与相 邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断相邻块 AO的运动矢量预测值与相 邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断相邻块 B2的运动矢量预测值与相 邻块 A1 的运动矢量预测值、 相邻块 B1 的运动矢量预测值中至少一项是否相 同。
进一步的， 若获取到的运动矢量预测值为当前适用相邻块的运动矢量预 测值， 则将获取到的运动矢量预测值加入到运动矢量列表还可以包括：
判断当前适用相邻块的运动矢量预测值与已被加入到运动矢量列表中的 运动矢量预测值是否相同； 若不相同， 则将当前适用相邻块的运动矢量预测 值加入运动矢量列表。
具体的， 作为本实施例的一种实施方式， 若当前适用相邻块为相邻块 B1 , 则判断相邻块 B1 的运动矢量预测值与已被加入运动矢量列表的相邻块 A1 的 运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B0 ,则判断相邻块 B0的运动矢量预测值与已 被加入运动矢量列表的相邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断相邻块 AO的运动矢量预测值与已 被加入运动矢量列表的相邻块 A1的运动矢量预测值是否相同； 若当前适用相邻块为相邻块 B2 ,则判断相邻块 B2的运动矢量预测值与已 被加入运动矢量列表的相邻块 A1的运动矢量预测值、 已被加入运动矢量列表 的相邻块 B1的运动矢量预测值中至少一项是否相同。
进一步的， 在建立运动矢量列表过程中还可以考虑 TMVP中的运动矢量。 作为本实施例的一种实施方式， 按照预设顺序从适用相邻块中获取运动 矢量预测值还可以为： 按照相邻块 Al、 相邻块 Bl、 相邻块 B0、 相邻块 A0、 相邻块 B2、 TMVP的顺序从适用相邻块和 /或 TMVP中获取运动矢量预测值。
为了更清晰的描述本实施的方案， 下面对在 CU不同划分方式下的运动矢 量列表建立的方法进行具体描述。
1、 CU被左右划分为 PU1和 PU2
( 1 ) PU1建立运动矢量列表
1 )按照相邻块 A1 , 相邻块 B1 , 相邻块 B0, 相邻块 AO, 相邻块 B2的顺 序， 从相邻块 A1 , 相邻块 B1 , 相邻块 B0, 相邻块 AO, 相邻块 B2中获取运动 矢量， 并加入到运动矢量列表中。
a.当前相邻块为相邻块 A1时， 仅当相邻块 A1中包含运动矢量预测值时， 将相邻块 A1的运动矢量预测值加入到运动矢量列表中；
b.当前相邻块为相邻块 B1 时， 仅当相邻块 B1 中包含运动矢量预测值， 并且该预测值与已被加入运动矢量列表中的相邻块 A1的运动矢量预测值不相 同时， 将相邻块 B1的运动矢量预测值加入到运动矢量列表中；
c当前相邻块为相邻块 B0时， 仅当相邻块 B0中包含运动矢量预测值， 并且该预测值与已被加入运动矢量列表中的相邻块 B1的运动矢量预测值不相 同时， 将相邻块 B0的运动矢量预测值加入到运动矢量列表中；
d.当前相邻块为相邻块 AO时， 仅当相邻块 AO中包含运动矢量预测值， 并且该预测值与已被加入运动矢量列表中的相邻块 A1的运动矢量预测值不相 同时， 将相邻块 AO的运动矢量预测值加入到运动矢量列表中；
e.当前相邻块为相邻块 B2时， 仅当相邻块 B2 中包含运动矢量预测值， 该预测值与已被加入运动矢量列表中的相邻块 A1的运动矢量预测值、 和与已 被加入运动矢量列表中的相邻块 Bl的运动矢量预测值均不相同， 并且相邻块 Al、 相邻块 Bl、 相邻块 B0、 相邻块 AO中至少一项的运动矢量预测值未被加 入运动矢量列表中时， 将相邻块 B2的运动矢量预测值加入运动矢量列表中。
2 )从 TMVP中获取运动矢量预测值， 并加入到运动矢量列表中。 具体的， 利用 PU1的时域参考图像获取 PU1的 TMVP ,如果 PU1的 TMVP可用，则将 TMVP 的运动矢量加入到运动矢量列表中。
( 2 ) PU2建立运动矢量列表
1 )按照相部块 B1 , 相部块 B0, 相部块 AO, 相邻块 B2的顺序， 从相邻块 B1 , 相邻块 B0, 相邻块 AO, 相邻块 B2 中获取运动矢量， 并加入到运动矢量 列表中。
a.当前相邻块为相邻块 Bl时， 仅当相邻块 B1中包含运动矢量预测值时， 将相邻块 B1的运动矢量预测值加入到运动矢量列表中；
b.当前相邻块为相邻块 B0时， 仅当相邻块 B0中包含运动矢量预测值， 并且该预测值与已被加入运动矢量列表中的相邻块 B1的运动矢量预测值不相 同时， 将相邻块 B0的运动矢量预测值加入到运动矢量列表中；
c当前相邻块为相邻块 AO时， 仅当相邻块 AO中包含运动矢量预测值时， 将相邻块 AO的运动矢量预测值加入到运动矢量列表中；
d.当前相邻块为相邻块 B2时， 仅当相邻块 B2 中包含运动矢量预测值， 该预测值与已被加入运动矢量列表中的相邻块 B1 的运动矢量预测值不相同 时， 将相邻块 B2的运动矢量预测值加入运动矢量列表中。
2 )从 TMVP中获取运动矢量预测值， 并加入到运动矢量列表中。 具体的， 利用 PU1的时域参考图像获取 PU1的 TMVP ,如果 PU1的 TMVP可用，则将 TMVP 的运动矢量加入到运动矢量列表中。
此时， 由于在建立 PU2的运动矢量列表时， 不考虑 PU2的相邻块 A1 , 则 可以釆用并行方式建立 PU1与 PU2的运动矢量列表。
1、 CU被上下划分为 PU1和 PU2
( 1 ) PU1建立运动矢量列表 与 "1、 CU被左右划分为 PUl和 PU2" 中 "（1 ) PUl建立运动矢量列表" 的方法类似， 在此不再赘述。
( 2 ) PU2建立运动矢量列表
1 )按照相部块 B1 , 相部块 B0, 相部块 AO, 相邻块 B2的顺序， 从相邻块 B1 , 相邻块 B0, 相邻块 AO, 相邻块 B2 中获取运动矢量， 并加入到运动矢量 列表中。
a.当前相邻块为相邻块 A1时， 仅当相邻块 A1中包含运动矢量预测值时， 将相邻块 A1的运动矢量预测值加入到运动矢量列表中；
b.当前相邻块为相邻块 BO时， 仅当相邻块 B0中包含运动矢量预测值时， 将相邻块 B0的运动矢量预测值加入到运动矢量列表中；
c当前相邻块为相邻块 AO时， 仅当相邻块 AO中包含运动矢量预测值， 并且该预测值与已被加入运动矢量列表中的相邻块 A1的运动矢量预测值不相 同时， 将相邻块 AO的运动矢量预测值加入到运动矢量列表中；
d.当前相邻块为相邻块 B2时， 仅当相邻块 B2 中包含运动矢量预测值， 该预测值与已被加入运动矢量列表中的相邻块 A1 的运动矢量预测值不相同 时， 将相邻块 B2的运动矢量预测值加入运动矢量列表中。
2 )从 TMVP中获取运动矢量预测值， 并加入到运动矢量列表中。 具体的， 利用 PU1的时域参考图像获取 PU1的 TMVP ,如果 PU1的 TMVP可用，则将 TMVP 的运动矢量加入到运动矢量列表中。
此时， 由于在建立 PU2的运动矢量列表时， 不考虑 PU2的相邻块 B1 , 则 可以釆用并行方式建立 PU1与 PU2的运动矢量列表。
釆用上述方案后， 当建立预测块的运动矢量列表时， 首先， 获取当前预 测块空域上的相邻块， 当前预测块位于当前编码单元中； 根据当前编码单元 的划分方式确定当前预测块的适用相邻块， 适用相邻块位于当前编码单元外； 根据适用相邻块的运动矢量预测值并按照预设顺序从适用相邻块中获取运动 矢量预测值， 并将获取到的运动矢量预测值加入到运动矢量列表。 这样， 建 立预测块的运动矢量列表时， 不考虑位于当前编码单元中的相邻块， 当编码 单元包含至少两个预测块时， 可以釆用并行方式建立至少两个预测块的运动 矢量列表， 增加了同一编码单元中的至少两个预测块建立运动矢量列表的速 度， 提高了并行处理能力。
下面提供一些装置实施例， 提供的装置实施例分别与上述方法实施例相 对应， 具体的装置及装置中包含的接收器处理器的实施方法参见方法实施例。
本实施例提供一种用于运动矢量预测的运动矢量列表建立的装置，如图 4 所示， 可以包括：
接收器 41 , 用于获取当前预测块空域上的相邻块， 当前预测块位于当前 编码单元中；
处理器 42 , 用于才艮据当前编码单元的划分方式确定当前预测块的适用相 邻块， 适用相邻块位于当前编码单元外； 根据适用相邻块的运动矢量预测值 并按照预设顺序从适用相邻块中获取运动矢量预测值， 并将获取到的运动矢 量预测值加入到运动矢量列表。
进一步的， 接收器 41获取到的预测块空域上的相邻块包括： 位于预测块 左下侧的相邻块 AO , 位于预测块左侧的相邻块 A1 , 位于预测块右上侧的相邻 块 B0, 位于预测块上侧的相邻块 B1 , 位于预测块左上侧的相邻块 B2。
进一步的， 处理器 42 , 还用于若当前编码单元被上下划分为第一预测块 和第二预测块， 且当前预测块为第二预测块， 则预测块的适用相邻块包括第 二预测块的： 相邻块 A0、 相邻块 Al、 相邻块 B0、 相邻块 B2;
若当前编码单元被左右划分为第一预测块和第二预测块， 且当前预测块 为第二预测块， 则预测块的适用相邻块包括第二预测块的： 相邻块 A0、 相邻 块 B0、 相邻块 Bl、 相邻块 B2。
进一步的， 处理器 42 , 还用于若适用相邻块为帧间编码块， 则按照相邻 块 Al、 相邻块 Bl、 相邻块 B0、 相邻块 A0、 相邻块 B2的顺序从适用相邻块中 获取运动矢量预测值。
进一步的， 处理器 42 , 还用于判断当前适用相邻块的运动矢量预测值与 除当前适用相邻块以外的其他适用相邻块的运动矢量预测值是否相同； 若不相同， 则将当前适用相邻块的运动矢量预测值加入运动矢量列表。 进一步的， 处理器 42 , 还用于判断当前适用相邻块的运动矢量预测值与 已被加入到运动矢量列表中的运动矢量预测值是否相同；
若不相同， 则将当前适用相邻块的运动矢量预测值加入运动矢量列表。 进一步的， 处理器 42 , 还用于若当前适用相邻块为相邻块 B1 , 则判断相 邻块 B1的运动矢量预测值与相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B0 ,则判断相邻块 B0的运动矢量预测值与相 邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断相邻块 AO的运动矢量预测值与相 邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断相邻块 B2的运动矢量预测值与相 邻块 A1 的运动矢量预测值、 相邻块 B1 的运动矢量预测值中至少一项是否相 同。
进一步的， 处理器 42 , 还用于若当前适用相邻块为相邻块 B1 , 则判断相 邻块 B1 的运动矢量预测值与已被加入运动矢量列表的相邻块 A1 的运动矢量 预测值是否相同；
若当前适用相邻块为相邻块 B0 ,则判断相邻块 B0的运动矢量预测值与已 被加入运动矢量列表的相邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断相邻块 AO的运动矢量预测值与已 被加入运动矢量列表的相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断相邻块 B2的运动矢量预测值与已 被加入运动矢量列表的相邻块 A1的运动矢量预测值、 已被加入运动矢量列表 的相邻块 B1的运动矢量预测值中至少一项是否相同。
釆用上述方案后， 当建立预测块的运动矢量列表时， 首先， 接收器获取 当前预测块空域上的相邻块， 当前预测块位于当前编码单元中； 处理器根据 当前编码单元的划分方式确定当前预测块的适用相邻块， 适用相邻块位于当 前编码单元外； 根据适用相邻块的运动矢量预测值并按照预设顺序从适用相 邻块中获取运动矢量预测值， 并将获取到的运动矢量预测值加入到运动矢量 列表。 这样， 建立预测块的运动矢量列表时， 不考虑位于当前编码单元中的 相邻块， 当编码单元包含至少两个预测块时， 可以釆用并行方式建立至少两 个预测块的运动矢量列表， 增加了同一编码单元中的至少两个预测块建立运 动矢量列表的速度， 提高了并行处理能力。
通过以上的实施方式的描述， 所属领域的技术人员可以清楚地了解到本 发明可借助软件加必需的通用硬件的方式来实现， 当然也可以通过硬件， 但 很多情况下前者是更佳的实施方式。 基于这样的理解， 本发明的技术方案本 质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来， 该 计算机软件产品存储在可读取的存储介质中， 如计算机的软盘， 硬盘或光盘 等， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 服务器， 或者网络设备等）执行本发明各个实施例所述的方法。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限 于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权 利 要求 书
1、一种用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 包括： 获取当前预测块空域上的相邻块， 所述当前预测块位于当前编码单元中； 根据所述当前编码单元的划分方式确定所述当前预测块的适用相邻块， 所 述适用相邻块位于所述当前编码单元外；
根据所述适用相邻块的运动矢量预测值并按照预设顺序从所述适用相邻块 中获取运动矢量预测值， 并将获取到的运动矢量预测值加入到所述运动矢量列 表。
2、 根据权利要求 1所述的用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 所述预测块空域上的相邻块包括：
位于预测块左下侧的相邻块 AO, 位于预测块左侧的相邻块 A1 , 位于预测块 右上侧的相邻块 B0, 位于预测块上侧的相邻块 B1 , 位于预测块左上侧的相邻块 B2。
3、 根据权利要求 2所述的用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 所述根据所述当前编码单元的划分方式确定所述当前预测块的适 用相邻块包括：
若所述当前编码单元被上下划分为第一预测块和第二预测块， 且所述当前 预测块为第二预测块， 则所述预测块的适用相邻块包括所述第二预测块的： 相 邻块 A0、 相邻块 Al、 相邻块 B0、 相邻块 B2;
若所述当前编码单元被左右划分为第一预测块和第二预测块， 且所述当前 预测块为第二预测块， 则所述预测块的适用相邻块包括所述第二预测块的： 相 邻块 A0、 相邻块 B0、 相邻块 Bl、 相邻块 B2。
4、 根据权利要求 2或 3所述的用于运动矢量预测的运动矢量列表建立的方 包括：
若所述适用相邻块为帧间编码块，则按照相邻块 Al、相邻块 Bl、相邻块 B0、 相邻块 A0、 相邻块 B2的顺序从所述适用相邻块中获取运动矢量预测值。
5、 根据权利要求 4所述的用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 若所述获取到的运动矢量预测值为当前适用相邻块的运动矢量预 测值， 则所述将获取到的运动矢量预测值加入到所述运动矢量列表包括：
判断所述当前适用相邻块的运动矢量预测值与除所述当前适用相邻块以外 的其他适用相邻块的运动矢量预测值是否相同；
若不相同， 则将所述当前适用相邻块的运动矢量预测值加入所述运动矢量 列表。
6、 根据权利要求 4所述的用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 若所述获取到的运动矢量预测值为当前适用相邻块的运动矢量预 测值， 则所述将获取到的运动矢量预测值加入到所述运动矢量列表包括：
判断所述当前适用相邻块的运动矢量预测值与已被加入到所述运动矢量列 表中的运动矢量预测值是否相同；
若不相同， 则将所述当前适用相邻块的运动矢量预测值加入所述运动矢量 列表。
7、 根据权利要求 5所述的用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 所述判断所述当前适用相邻块的运动矢量预测值与除所述当前适 用相邻块以外的其他适用相邻块的运动矢量预测值是否相同包括：
若当前适用相邻块为相邻块 B1 ,则判断所述相邻块 B1的运动矢量预测值与 相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B0 ,则判断所述相邻块 B0的运动矢量预测值与 相邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断所述相邻块 AO的运动矢量预测值与 相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断所述相邻块 B2的运动矢量预测值与 相邻块 A1 的运动矢量预测值、 所述相邻块 B1 的运动矢量预测值中至少一项是 否相同。
8、 根据权利要求 6所述的用于运动矢量预测的运动矢量列表建立的方法， 其特征在于， 所述判断所述当前适用相邻块的运动矢量预测值与已被加入到所 述运动矢量列表中的运动矢量预测值是否相同包括：
若当前适用相邻块为相邻块 B1 ,则判断所述相邻块 B1的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B0 ,则判断所述相邻块 B0的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断所述相邻块 AO的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断所述相邻块 B2的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 A1的运动矢量预测值、 已被加入所述运动 矢量列表的相邻块 B1的运动矢量预测值中至少一项是否相同。
9、一种用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 包括： 接收器， 用于获取当前预测块空域上的相邻块， 所述当前预测块位于当前 编码单元中；
处理器， 用于根据所述当前编码单元的划分方式确定所述当前预测块的适 用相邻块， 所述适用相邻块位于所述当前编码单元外； 根据所述适用相邻块的 将获取到的运动矢量预测值加入到所述运动矢量列表。
10、 根据权利要求 9所述的用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 所述接收器获取到的所述预测块空域上的相邻块包括：
位于预测块左下侧的相邻块 AO , 位于预测块左侧的相邻块 A1 , 位于预测块 右上侧的相邻块 B0 , 位于预测块上侧的相邻块 B1 , 位于预测块左上侧的相邻块 B2。
11、根据权利要求 10所述的用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 所述处理器， 还用于若所述当前编码单元被上下划分为第一预测 块和第二预测块， 且所述当前预测块为第二预测块， 则所述预测块的适用相邻 块包括所述第二预测块的： 相邻块 A0、 相邻块 Al、 相邻块 B0、 相邻块 B2 ; 若所述当前编码单元被左右划分为第一预测块和第二预测块， 且所述当前 预测块为第二预测块， 则所述预测块的适用相邻块包括所述第二预测块的： 相 邻块 A0、 相邻块 B0、 相邻块 Bl、 相邻块 B2。
12、 根据权利要求 10或 11所述的用于运动矢量预测的运动矢量列表建立 的装置， 其特征在于， 所述处理器， 还用于若所述适用相邻块为帧间编码块， 则按照相邻块 Al、 相邻块 Bl、 相邻块 B0、 相邻块 A0、 相邻块 B2的顺序从所述 适用相邻块中获取运动矢量预测值。
13、根据权利要求 12所述的用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 所述处理器， 还用于判断所述当前适用相邻块的运动矢量预测值 与除所述当前适用相邻块以外的其他适用相邻块的运动矢量预测值是否相同； 若不相同， 则将所述当前适用相邻块的运动矢量预测值加入所述运动矢量 列表。
14、根据权利要求 12所述的用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 所述处理器， 还用于判断所述当前适用相邻块的运动矢量预测值 与已被加入到所述运动矢量列表中的运动矢量预测值是否相同；
若不相同， 则将所述当前适用相邻块的运动矢量预测值加入所述运动矢量 列表。
15、根据权利要求 13所述的用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 所述处理器， 还用于若当前适用相邻块为相邻块 B1 , 则判断所述 相邻块 B1的运动矢量预测值与相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B0,则判断所述相邻块 B0的运动矢量预测值与 相邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO,则判断所述相邻块 AO的运动矢量预测值与 相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断所述相邻块 B2的运动矢量预测值与 相邻块 A1 的运动矢量预测值、 所述相邻块 B1 的运动矢量预测值中至少一项是 否相同。
16、根据权利要求 14所述的用于运动矢量预测的运动矢量列表建立的装置， 其特征在于， 所述处理器， 还用于若当前适用相邻块为相邻块 B1 , 则判断所述 相邻块 B1 的运动矢量预测值与已被加入所述运动矢量列表的相邻块 A1 的运动 矢量预测值是否相同；
若当前适用相邻块为相邻块 B0 ,则判断所述相邻块 B0的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 B1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 AO ,则判断所述相邻块 AO的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 A1的运动矢量预测值是否相同；
若当前适用相邻块为相邻块 B2 ,则判断所述相邻块 B2的运动矢量预测值与 已被加入所述运动矢量列表的相邻块 A1的运动矢量预测值、 已被加入所述运动 矢量列表的相邻块 B1的运动矢量预测值中至少一项是否相同。
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