WO2014005426A1

WO2014005426A1 - Method and device for processing inter-frame predictive coding motion information and codec system

Info

Publication number: WO2014005426A1
Application number: PCT/CN2013/070867
Authority: WO
Inventors: 杨海涛; 张星宇; 时永方; 區子廉
Original assignee: 华为技术有限公司
Priority date: 2012-07-02
Filing date: 2013-01-23
Publication date: 2014-01-09
Also published as: CN103533376B; CN103533376A

Abstract

Embodiments of the present invention provide a method and device for processing inter-frame predictive coding motion information, and a codec system, so as to improve a code stream parsing speed. The method comprises: determining, according to values of syntax elements, a reference frame list currently in use and motion information of matching blocks to be transmitted in the reference frame list in use; if the reference frame list currently in use and the motion information of matching blocks to be transmitted in the reference frame list in use are determined, first writing a motion vector predictor identifier of matching blocks in the determined reference frame list in use into a code stream, and then writing motion vector difference related information of matching blocks in the determined reference frame list into the code stream. With the present invention, a decoder end is capable of processing the information in a parallel way, that is, parsing the motion vector difference related information, and at the same time decoding the parsed motion vector predictor identifier to obtain a motion vector, thereby improving the code stream decoding speed at the decoder end.

Description

The present invention claims to be submitted to the Chinese Patent Office on July 2, 2012, the application number is 201210225481.7, and the invention name is "interframe prediction coding motion information processing method and device" The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference. Technical field

The present invention relates to the field of image processing, and in particular, to a method, an apparatus, and a codec system for processing inter prediction encoded motion information.

Background technique

Existing video image coding and decoding techniques include intra-prediction coding and inter-frame prediction coding, wherein inter-frame prediction coding refers to compression coding of a current coded picture by using the temporal correlation of the current coded picture and the coded picture. In H.264/AVC, one frame of image is divided into several square image blocks. Searching for the image block matching the current image block from the encoded reference frame, and calculating the relative offset of the spatial position of the current block and the matching block, the relative offset is the motion vector (Motion Vector, MV), The process of motion vector is called Motion Estimation (ME). The process of predicting the current image block by using matching block is called Motion Compensation (MC). The difference between the pixel values of the current image block and the matching block. It is called image block prediction residual.

In order to make the matching block used by the decoder side and the encoder side the same, the motion information of the image block used by the encoder side needs to be transmitted to the decoder side in the code stream. If the motion vector of each image block is directly encoded directly, a large number of bits will be consumed, especially when a small-sized image block is dominant. Since a moving object often covers multiple image blocks, the motion vectors of adjacent image blocks in the spatial domain have a reluctant correlation. Therefore, the motion vector of the current image block can be predicted according to the motion vector of the adjacent coded image block, and the predicted value is called a motion vector predictor (MVP), a motion vector of the current image block, and a motion vector. The difference between the predicted values is called the Motion Vector Difference (MVD), which is related to: MV = MVD + MVP.

As a new video coding standard, H.264 uses multi-reference frame prediction to improve prediction accuracy in the motion estimation process, that is, to establish a buffer for storing multiple reconstructed image frames, and all the buffers in the cache. Find the optimal matching block in the reconstructed image frame for motion compensation to better remove the redundancy in the time domain. The interframe predictive coding of H.264 uses two buffers as above, reference frame list 0 (reference list 0) and reference frame list 1 (reference list 1). The reference frame in which the best matching block in each list is located is indicated by an index value, namely ref_10_idx and ref_ll_idx. Taking the reference frame list 0 as an example, the motion information of the matching block in the list includes a reference frame index value (ref_10_idx), a motion vector predictor (MVP), and a motion vector difference (MVD). Based on these three pieces of information, the decoder can find the correct matching block in the selected reference frame.

A method for processing interframe predictive coding motion information provided by the prior art is to use H.264/AVC as a video image compression standard, and use a macroblock (16x16 pixel size) as a basic unit of encoding processing, during interframe prediction. A macroblock can contain one or more motion blocks, but any motion block is a rectangular block. The reference frame list value, reference frame index value, and motion vector difference of these motion blocks will be transmitted or decoded in units of macroblocks. Since the selection method of the motion vector predictor (MVP) in H.264/AVC is uniquely determined, the related information of the MVP need not be transmitted in the code stream. Specifically, at the encoder end, the selection of the reference frame list of the macroblock is first transmitted, that is, when the reference frame list 0 is used, the transmission motion information is encoded in the following order: sequentially transmitting all motion blocks in the macroblock in the reference frame list Reference frame index value ref_idx_10 used in 0; sequentially transmitting all motion blocks in the macroblock in the reference frame list 0 motion vector difference mvd_10 „ When the reference frame list 1 is used, the transmission motion information is encoded in the following order: The reference frame index value ref_idx_11 used by all motion blocks in the reference frame list 1; the motion vector difference mvd_11 in the reference frame list 1 is transmitted in sequence in all the motion blocks in the macro block. At the decoder side, when the reference frame list 0 is used, Decoding the motion information in the following order: sequentially decoding the reference frame index value ref_idx_10 used by all motion blocks in the macroblock in the reference frame list 0; sequentially decoding all motion blocks in the macroblock in the reference frame list 0 in the motion vector difference mvd_10. When referring to frame list 1, the motion information is decoded in the following order: sequentially decoding all motion blocks in the macro block in the reference frame list The reference frame index value ref_idx_ll used in 1; sequentially decodes the motion vector difference mvd_11 of all motion blocks in the macroblock in the reference frame list 1. The decoder side and the encoder side use the same method to select and derive the motion vector predictor of the current image block. At the decoder end, each motion block in the macroblock can determine the reference frame in which the matching block of each motion block is located according to the reference frame list and the reference frame index value parsed in the code stream; each motion in the macroblock The block calculates a motion vector based on a motion vector difference (eg, mvd_10 ) of a certain list (eg, reference frame list 0) parsed in the code stream, plus a motion vector predictor derived from the decoder side. , mv_10), thereby determining the spatial position of the matching block in the list, and obtaining the required matching block.

However, the method for processing inter-predictive coding motion information provided by the above prior art is disadvantageous in that the motion vector predictor obtained at the decoder end is not necessarily the current image block because the motion vector predictor is uniquely selected. The optimal value, in addition, the decoder is not processed in parallel at this end, and the decoding speed is not high.

Summary of the invention

Embodiments of the present invention provide a method, a device, and a codec system for processing inter-predictive coding motion information, so as to improve the code stream resolution speed.

An embodiment of the present invention provides a method for processing inter prediction encoding motion information, where the method includes: determining, according to a value of a syntax element, a currently used reference frame list and motion information of a matching block to be transmitted in the used reference frame list, The reference frame list includes at least one of a reference frame list 0 and a reference frame list 1, the motion information including a reference frame index value, a motion vector predictor identifier, and motion vector difference related information; if the currently used reference frame list and the The motion information of the matching block to be transmitted in the used reference frame list is determined, and the motion vector predictor identifier of the matching block in the determined used reference frame list is prior to the determined matching block in the used reference frame list. The motion vector difference related information is written to the code stream.

An embodiment of the present invention provides a method for processing inter-predictive coding motion information, where the method includes: determining, according to a value of a syntax element, a currently used reference frame list and motion information of a matching block to be parsed in the used reference frame list, The reference frame list includes at least one of a reference frame list 0 and a reference frame list 1, the motion information including a reference frame index value, a motion vector predictor identifier, and motion vector difference related information; if the currently used reference frame list and the The motion information of the matching block to be parsed in the used reference frame list is determined, and then the motion vector predictor identifier of the matching block in the determined used reference frame list is parsed and then parsed into the determined used reference frame list. Match block motion vector difference related information.

An embodiment of the present invention provides an apparatus for processing inter prediction encoding motion information, where the apparatus includes: a determining module, configured to determine, according to a value of a syntax element, a list of currently used reference frames and the used Referencing motion information of a matching block in the frame list that needs to be transmitted, the reference frame list including at least one of a reference frame list 0 and a reference frame list 1, the motion information including a reference frame index value, a motion vector predictor flag, and motion a vector difference related information; a writing module, configured to: if the currently used reference frame list and the motion information of the matching block to be transmitted in the used reference frame list are determined by the determining module, the determined used reference frame list The motion vector predictor value of the inner matching block is written to the code stream prior to the determined matching block motion vector difference related information in the used reference frame list.

An embodiment of the present invention provides an apparatus for processing inter-predictive coding motion information, where the apparatus includes: a to-be-resolved determination module, configured to determine, according to a value of a syntax element, a list of currently used reference frames and a list of used reference frames to be parsed The motion information of the matching block, the reference frame list includes at least one of a reference frame list 0 and a reference frame list 1, the motion information including a reference frame index value, a motion vector predictor identifier, and a motion vector difference related information; a module, configured to: if the currently used reference frame list and the motion information of the matching block that needs to be parsed in the used reference frame list are determined by the to-be-parsed determining module, parsing the determined matching block in the used reference frame list first The motion vector predictor identifies and parses the determined matching block motion vector difference related information in the used reference frame list.

An embodiment of the present invention provides a codec system, where the codec system includes an encoder and a decoder, the encoder includes a determining module and a writing module, and the decoder includes a to-be-resolved determining module and a parsing module; a determining module, configured to determine, according to a value of the syntax element, a currently used reference frame list and motion information of a matching block to be transmitted in the used reference frame list, where the reference frame list includes the reference frame list 0 and the reference frame list 1 At least one of the motion information includes a reference frame index value, a motion vector predictor identifier, and a motion vector difference related information; the writing module is configured to: if the currently used reference frame list and the used reference frame list need to be transmitted The motion information of the matching block is determined by the determining module, and the motion vector predictor identifier of the matching block in the determined used reference frame list is prior to the determined matching block motion vector difference in the determined used reference frame list. The information is written into the code stream; the to-be-resolved determination module is configured to determine the currently used parameter according to the value of the syntax element And the motion information of the matching block that needs to be parsed in the used reference frame list; the parsing module is configured to: if the currently used reference frame list and the used reference frame list need to be parsed, the motion information of the matching block is Determining, by the to-be-resolved determination module, parsing the motion vector predictor identifier of the matching block in the determined used reference frame list, and parsing the determined matching block in the used reference frame list Motion vector difference related information.

As can be seen from the foregoing embodiments of the present invention, the motion information of the matching block transmitted to the decoder end includes the motion vector predictor identifier, and in the transmission process, the motion vector predictor identifier of the matching block in the corresponding reference frame list is prior to the motion. The vector difference related information is written to the code stream. Therefore, compared with the processing of the inter-predictive coding motion information provided by the prior art, the method provided by the embodiment of the present invention can enable the decoder side to obtain the motion vector prediction optimal for the current image block according to the motion vector prediction value identifier. The value, and the motion vector predictor identifier is written into the code stream prior to the motion vector difference related information, so that the decoder side can process the information in parallel, that is, the motion vector difference correlation information is parsed while the motion vector predictor value is decoded. The motion vector predictor is obtained, thereby increasing the decoding speed of the code stream at the decoder end.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments will be briefly described below. Obviously, the drawings in the following description are only the present invention. For some embodiments, other figures may also be obtained as those skilled in the art from these figures.

1 is a schematic flow chart of a method for processing inter prediction encoding motion information according to an embodiment of the present invention;

2 is a schematic flow chart of a method for processing inter prediction encoding motion information according to another embodiment of the present invention;

3 is a schematic structural diagram of an apparatus for processing inter-pre-J code motion information according to an embodiment of the present invention;

4 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention; FIG.

6 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention; Intention

FIG. 8 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of a codec system according to an embodiment of the present invention.

detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a method for processing inter prediction encoding motion information according to an embodiment of the present invention, where an execution body may be an encoder of a communication system using interframe prediction coding technology. The method illustrated in Fig. 1 mainly includes step S101 and step S102:

S101. Determine, according to the value of the syntax element, a list of currently used reference frames and motion information of the matching block to be transmitted in the used reference frame list.

In the embodiment of the present invention, the reference frame list includes at least one of a reference frame list 0 (reference list 0 ) and a reference frame list 1 (reference list 1 ), that is, may be a reference frame list 0, possibly a reference frame list 1 or It may be a reference frame list 0 and a reference frame list 1, each of which has the same function as the reference frame list mentioned in the background art. The motion information of the matching block in the reference frame list of the prior art only needs to include the reference frame index value and the motion vector difference. In the embodiment of the present invention, the motion information of the matching block in the reference frame list includes the reference frame index value and In addition to the motion vector difference, a motion vector predictor flag (hereinafter referred to as MVP_flag) is also included. The motion information of the matching block in the reference frame list includes motion information including the matching block in the reference frame list 0, motion information of the matching block in the reference frame list 1 or motion information of the matching block in the reference frame list 0, and matching in the reference frame list 1 Block motion information. The motion vector predictive value identifier (MVP_flag) is used to indicate that the motion vector predictor selected at the encoder side is Mvp_0 is also mvp_l; when the encoder transmits the motion vector predictor identifier to the decoder end, it is equivalent to telling the decoder whether the motion vector predictor selected at the encoding end of the decoder is mvp_0 or mvp_l.

For each prediction unit (PU), the Motion Vector Difference (MVD) may be obtained by MV - 111¥ _0 or ]^¥ - mvp_l.

It should be noted that, in the embodiment of the present invention, the prediction unit is similar to the motion block in H.264/AVC, that is, the smaller block divided under the macro block using the inter prediction technique; since each such block is You can have your own motion vector, so each prediction unit can have its own motion vector.

Which of the reference frame lists is currently used for the encoder side and which of the reference frame lists are transmitted is in the embodiment of the present invention, which is determined according to the value of the syntax element, inter_pred_idc. Specifically, if the current PU belongs to the bidirectional prediction slice, the syntax element inter_pred_idc is transmitted, and the value may be Pred_L0, Pred_L1, or Pred_BI; further, when the value of inter_pred_idc is Pred_L0, it is determined that the reference frame list 0 is used, and What needs to be transmitted is the motion information of the matching block in the reference frame list 0. When the value of inter_pred_idc is Pred_L1, it is determined that the reference frame list 1 is used, and the motion information of the matching block in the reference frame list 1 needs to be transmitted; When the value of inter_pred_idc is Pred_BI, it is determined that the reference frame list 0 and the reference frame list 1 are used, and it is necessary to transmit the motion information of the matching block in the reference frame list 0 and the reference frame list 1. If the current PU does not belong to the bidirectional prediction stripe, the syntax element inter_pred_idc, that is, the value of the syntax element inter_pred_idc, is not transmitted, and the default is Pred_0.

As for determining whether the motion information needs to be transmitted, it may be determined according to the prediction mode, that is, if the inter prediction mode of the current PU is not the Merge mode, it is determined to transmit the motion information, otherwise the default motion information.

S102. If the currently used reference frame list and the motion information of the matching block that needs to be transmitted in the used reference frame list are determined, the motion vector predictor identifier of the matching block in the determined used reference frame list is prior to the The determined motion vector difference related information of the matching block in the determined reference frame list is written into the code stream.

If the encoder side determines which reference frame list is currently used and which of the reference frame lists need to be transmitted, the motion information of the matching block is used as the reference frame used for the determination. The motion vector predictor of the matching block in the reference frame list of the matching block identifies an embodiment of the code stream written prior to the determined motion vector difference related information of the matching block in the used reference frame list, which may be determined first. The reference frame index value of the matching block in the used reference frame list is written into the code stream, and the motion vector predictor identifier of the matching block in the determined used reference frame list is further written into the code stream, and finally the determined reference used is used. The motion vector difference related information of the matching block in the frame list is written into the code stream. Specifically, if the encoder side determines that the reference frame list 0 is currently used and the motion information of the matching block in the reference frame list 0 that needs to be transmitted, the motion information of the code stream sequentially written includes the matching block in the reference frame list 0. The reference frame index value (hereinafter denoted by ref_idx_/0), the motion vector predictor flag of the matching block in the reference frame list 0 (hereinafter denoted by mvp_ /0_flag), and the motion of the matching block in the reference frame list 0 Vector difference (hereinafter referred to as mvd - /0) related information; if the encoder side determines that the current reference frame 1 is used and the motion information of the matching block in the reference frame list 1 is to be transmitted, the code stream is sequentially written. The motion information includes a reference frame index value of the matching block in the reference frame list 1 (hereinafter denoted by ref_idx−/1), and a motion vector predictor identifier of the matching block in the reference frame list 1 (hereinafter, mvp_ /1_flag is used) And the motion vector difference of the matching block in the reference frame list 1 (hereinafter referred to as mvd - /1) related information; if the encoder side determines that the reference frame list 0 and the reference frame list are currently used 1 and the motion information of the matching block in the reference frame list 0 and the reference frame list 1 to be transmitted, the motion information of the code stream sequentially written in the reference frame list 0 includes the ref_idx_/0, mvp_/ of the matching block in the reference frame list 0. 0—flag and mvd—/0 related information, and ref_idx_/1, mvp_/1_flag, and mvd_/1 related information of the matching block in the reference frame list 1.

Transmitting a motion vector predictor value of the matching block in the reference frame list of the matching block in the determined reference frame list of the determined reference frame identifier to the code stream prior to the determined motion vector difference related information of the matching block in the used reference frame list In another embodiment, the motion vector predictor identifier of the matching block in the determined used reference frame list may be first written into the code stream, and then the reference frame index value of the matching block in the determined used reference frame list may be written. The code stream finally writes the motion vector difference related information of the matching block in the determined used reference frame list to the code stream. Specifically, if the encoder side determines that the motion information of the matching block in the reference frame list 0 is currently to be transmitted, the motion information of the code stream sequentially written includes mvp_/0_flag, ref_idx_/0, and mvd- /0 related information; if the encoder side determines that the current need to transmit the motion information of the matching block in the reference frame list 1, the motion information of the code stream sequentially written includes mvp_ /1_flag, ref_idx_ /1 and Mvd — /1 related information; if the encoder determines that the current need to transmit is the reference frame list 0 and the reference frame The motion information of the matching block in the list 1 is sequentially written into the motion information of the code stream including mvp_ /0_flag, ref_idx_ /0 and mvd_ /0 related information, and mvp_ /1_flag, ref- Idx — /1, and mvd — /1 related information.

The above motion information may be transmitted to the decoder end in the order of writing the code stream, i.e., the decoder side may finally read the parsed code stream in the order in which the motion information is written to the encoder side in the code stream.

The following uses the reference frame list 1 as an example to illustrate the technical solution for transmitting mvd_ / 0 related information; the technical solution for transmitting mvd - / 1 related information is similar to the technical solution for transmitting mvd - / 0 related information, and will not be described.

Specifically, the mvd_ /0 related information includes the mvd - / 0 horizontal component whose absolute value is greater than 0 (the following uses abs - mvd - greaterO - flag [0];), the absolute value of the mvd - / 0 vertical component is greater than 0 mark (hereinafter abs_mvd - greaterO - flag [l] is indicated;), mvd - /0 horizontal component absolute value is greater than 1 mark (hereinafter abs_mvd - greaterl - flag [0]), mvd - /0 The absolute value of the vertical component is greater than 1 (the following is used abs_mvd - greater l - flag [l]), mvd - / 0 horizontal component absolute value minus 2 amplitude (the following use abs - mvd - minus2 [0] Indicates), the sign of the mvd — /0 horizontal component (the following is expressed by mvd — sign — flag [0]), and the amplitude of the mvd — /0 vertical component absolute value minus 2 (the following is expressed using abs_mvd_minus2[l] ) and the sign of the vertical component of mvd — /0 (the following is represented by mvd — sign — flag [1]). For abs—mvd—greater 1—flag [0] , abs mvd greaterl _flag[l] , abs_mvd_minus2 [0] , mvd — sign — flag [0] , abs — mvd — minus2[l], and mvd — sign—flag[ l] is conditional transmission, that is, if the absolute value of the mvd_ /0 horizontal component is greater than 0, then the transmission abs- mvd - greaterl - flag [0]; if the absolute value of the mvd - / 0 vertical component is greater than 0, then the transmission Abs—mvd— greaterl—flag[l]; if the absolute value of the mvd− /0 horizontal component is greater than 1, then transmit abs—mvd—minus2[0] and mvd—sign—flag [0]; if mvd — /0 is vertical If the absolute value of the component is greater than 1, then transmit abs-mvd- minus2 [1] and mvd_sign_flag[l]. The motion information of the matching block transmitted to the decoder side includes a motion vector predictor identifier, and in the transmission process, the motion vector predictor flag of the matching block in the corresponding reference frame list is written to the code stream prior to the motion vector difference related information. Therefore, compared with the processing of the inter-predictive coding motion information provided by the prior art, the method provided by the embodiment of the present invention may enable the decoder end to obtain the pair according to the motion vector prediction value identifier. The motion vector predictor value is optimal for the current image block, and the motion vector predictor flag is written to the code stream prior to the motion vector difference related information, so that the decoder can process the information in parallel, that is, while parsing the motion vector difference related information. The parsed motion vector predictor identifies the motion vector predictor decoded, thereby increasing the decoding speed of the code stream at the decoder end.

Referring to FIG. 2, it is a schematic flowchart of a method for processing inter-predictive coding motion information according to another embodiment of the present invention. The execution body may be a decoder of a communication system using inter-prediction coding technology. The method illustrated in FIG. 2 mainly includes step S201 and step S02:

S201. Determine, according to a value of the syntax element, a reference frame list used and motion information of the matching block that needs to be parsed in the used reference frame list.

Similar to the embodiment of FIG. 1, in this embodiment, the motion information of the matching block in the reference frame list includes a reference frame index value, a motion vector difference, and a motion vector predictor identifier; the motion information of the matching block in the reference frame list includes The motion information of the matching block in the reference frame list 0 (reference list 0 ) and/or the motion information of the matching block in the reference frame list 1 (reference list 1 ), that is, the motion information including the matching block in the reference frame list 0, the reference frame list The motion information of the matching block in 1 or the motion information of the matching block in the reference frame list 0 and the motion information of the matching block in the reference frame list 1. When the decoder receives the motion vector predictor identifier transmitted by the encoder, the decoder knows whether the motion vector predictor value selected by the encoder at the time of encoding is mvp_0 or mvp_l.

Which reference frame list is currently used for the decoder side and which one of the reference frame lists need to be parsed is the motion information of the matching block in the reference frame list. In this embodiment, it is determined according to the value of the syntax element, that is, inter_pred_idc. Specifically, if the current PU belongs to the bidirectional prediction slice, the syntax element inter_pred_idc is read and parsed, and the value may be Pred_L0, Pred_L1 or Pred_BI; further, when the value of inter_pred_idc is Pred_L0, it is determined that the reference frame list is used. 0, need to read and parse the motion information of the matching block in the reference frame list 0. When the value of inter_pred_idc is Pred_Ll, it is determined that the reference frame list 1 is used, and the reference frame list 1 needs to be read and parsed. Matching the motion information of the block; when the value of inter_pred_idc is Pred_BI, it is determined that the reference frame list 0 and the reference frame list 1 are used, and the motion of the matching block in the reference frame list 0 and the reference frame list 1 needs to be read and parsed. information. If the current PU does not belong to the bidirectional prediction slice, the syntax element inter_pred_idc is not parsed, that is, the value of the syntax element inter_pred_idc defaults to Pred_0. As for determining whether the motion information needs to be read and parsed, it may be determined according to the prediction mode, that is, if the inter prediction mode of the current PU is not the Merge mode, it is determined to read and parse the motion information, otherwise the default motion information.

S202. If the currently used reference frame list and the motion information of the matching block that needs to be parsed in the used reference frame list are determined, first parsing the motion vector predictive value identifier of the matching block in the determined used reference frame list The determined motion vector difference related information of the matching block in the used reference frame list.

If the decoder determines which of the reference frame lists are currently used and which of the reference frame lists need to be parsed, the motion vector prediction of the matching block in the determined reference frame list is first parsed. After the value identifier is used to parse the determined motion vector difference related information of the matching block in the used reference frame list, the reference frame of the matching block in the determined reference frame list in the determined code stream may be sequentially read and parsed. Index value, motion vector predictor identification, and motion vector difference related information. Specifically, if the decoder determines that the reference frame list 0 is currently used and the motion information of the matching block in the reference frame list 0 that needs to be parsed, the reference of the matching block in the reference frame list 0 in the code stream is sequentially read and parsed. The frame index value (hereinafter expressed by ref_idx_/0), the motion vector predictor flag of the matching block in the reference frame list 0 (hereinafter denoted by mvp_ /0_flag), and the motion vector of the matching block in the reference frame list 0 Difference (hereinafter referred to as mvd - /0) related information; if the decoder determines that the current reference frame 1 is used and the motion information of the matching block in the reference frame list 1 is to be parsed, the code stream is sequentially read and parsed The reference frame index value of the matching block in the reference frame list 1 (hereinafter denoted by ref_idx− /1), the motion vector predictor identifier of the matching block in the reference frame list 1 (hereinafter denoted by mvp− /1−flag) and The motion vector difference of the matching block in the reference frame list 1 (hereinafter referred to as mvd - /1) related information; if the decoder side determines that the reference frame list 0 and the reference are currently used The test frame list 1 and the motion information of the matching block in the reference frame list 0 and the reference frame list 1 need to be parsed, and then the ref_idx_ /0, mvp_ /0_flag and mvd in the code stream are sequentially read and parsed. /0 related information, and ref_ idx - / 1, mvp - / 1 - flag and mvd - / 1 related information.

Another embodiment of the motion vector difference related information of the matching block in the used reference frame list after parsing the determined motion vector predictor identifier of the matching block in the determined used reference frame list may be And sequentially reading the transport of the matching block in the used reference frame list determined in the code stream Motion vector predictor identification, reference frame index value, and motion vector difference related information. Specifically, if the decoder determines that the reference frame list 0 is currently used and the motion information of the matching block in the reference frame list 0 that needs to be parsed, the mvp_ /0_flag, ref_ in the code stream are sequentially read and parsed. Idx — /0 and mvd — /0 related information; if the decoder determines that the current reference frame 1 is used and the motion information of the matching block in the reference frame list 1 needs to be parsed, the code stream is sequentially read and parsed. Mvp— /1—flag, ref—idx—/1 and mvd—1/1 related information; if the decoder determines that the current reference frame list 0 and the reference frame list 1 are used, and the reference frame list 0 and reference need to be parsed The motion information of the matching block in the frame list 1 sequentially reads and parses the information of mvp_ /0_flag, ref_idx_ /0 and mvd_ /0 in the code stream, and mvp_ /1_flag, ref- Idx — /1 and mvd — /1 related information. The following takes the reference frame list 0 as an example to illustrate the technical solution of the decoder parsing mvd_ / 0; the technical solution of the decoder to parse the mvd - / 1 related information is similar to the technical solution for parsing the mvd - / 0 related information, and will not be described again.

Specifically, in the embodiment, the mvd_ / 0 related information includes the mvd - / 0 horizontal component whose absolute value is greater than 0 (the following uses abs - mvd - greaterO - flag [0]), mvd - / 0 vertical The absolute value of the component is greater than 0 (the following uses abs-mvd - greaterO - flag [l]), mvd - / 0 horizontal component absolute value is greater than 1 (hereinafter abs_mvd - greaterl - flag [0]), The mvd— /0 vertical component has an absolute value greater than 1 (the following is abs—mvd—the greater l—flag[l] is used, and the mvd— /0 horizontal component has an absolute value minus 2 (the following uses abs—mvd—min 2 [0] indicates ;), the sign of the mvd - / 0 horizontal component (the following uses mvd - sign - flag [0]), mvd - / 0 vertical component absolute value minus 2 amplitude (the following use abs — mvd — minus2[l] represents) and the sign of the vertical component of mvd — /0 (represented by mvd — sign — flag[l] below). For abs—mvd—greater 1—flag [0] , abs mvd greaterl _flag[l] , abs_mvd_minus2 [0] , mvd — sign — flag [0] , abs — mvd — minus2[l], and mvd — sign—flag[ l] is conditional parsing, that is, if the absolute value of the mvd_ /0 horizontal component is greater than 0, the decoder reads and parses abs-mvd - greaterl - flag[0]; if mvd - /0 vertical component absolute value If greater than 0, the decoder reads and parses abs-mvd- greaterl-flag[l]; if the absolute value of the mvdJO horizontal component is greater than 1, the decoder reads and parses abs-mvd- minus2 [0] and mvd_sign_flag[0] If the absolute value of the mvd_ /0 vertical component is greater than 1, the decoder reads and parses abs_mvd_minus2 [1] and mvd_sign_flag[l].

For the method of processing inter prediction encoded motion information illustrated in FIG. 2, due to motion vector prediction The position of the value identifier in the code stream precedes the motion vector difference related information. Therefore, the decoder can first parse the motion vector predictor identifier and then parse the motion vector difference related information. Compared with the first analysis of the motion vector difference related information, after parsing the motion vector difference related information, and resolving the motion vector prediction value identification, the interframe predictive coding motion information processing method illustrated in FIG. 2 causes the decoder side to decode The speed is greatly accelerated, which is conducive to its parallel processing. This is because the motion vector difference related information is more complicated than the motion vector predictor identification. It is assumed that the time taken to parse the motion vector difference related information is T1, and the time taken to decode the motion vector predictor is T2. If the motion vector difference correlation information is first analyzed, after the motion vector difference correlation information is completed, the motion vector predictor identifier is parsed, and then the motion vector predictor value is used to identify the motion vector predictor (MVP) scheme. The total time taken to resolve the motion vector difference related information and the decoded motion vector predictor is the time of both, that is, T1 + Τ2. If the motion vector predictor identifier is first parsed, after the motion vector predictor identifier is completed, the motion vector difference related information is parsed, and then the motion vector difference related information is parsed, and the motion vector predictor value is decoded according to the already parsed motion vector predictor. For the motion vector predictor, the total time taken to resolve the motion vector difference related information and the decoded motion vector predictor is max (Tl, T2), that is, the maximum of the two, obviously, max (Tl, D2) is less than 11 + Ding 2.

In the method illustrated in FIG. 2, after the step of parsing the motion vector predictor identifier of the matching block in the corresponding reference frame list, and then parsing the motion vector difference related information, the method further includes: determining, according to the reference frame index value, the matching block. a reference frame in which the reference frame is reconstructed; a motion vector of the matching block in the corresponding reference frame list is reconstructed; and the current inter prediction unit is obtained according to the reference frame in which the determined matching block is located and the motion vector of the matching block in the reconstructed corresponding reference frame list A matching block in the corresponding reference frame list.

The reference frame list 0 selected by the decoder side is taken as an example (similar to the reference frame list 1 when not selected), and when the motion vector of the matching block is reconstructed in the corresponding reference frame list, the specific one may be:

S1, recovering, according to the determined motion vector difference related information of the matching block in the used reference frame list, the motion vector difference of the matching block in the determined used reference frame list; specifically, referring to the motion vector of the matching block in the frame list 0 The difference (mvd - /0) related information includes the mvd - / 0 horizontal component (hereinafter expressed by mvd - X) and the mvd - / 0 vertical component (hereinafter referred to as 11 ^ (1), where mvd - x can be as follows Mode calculation:

Mvd— X = abs mvd greaterO _flag[0] * (abs_mvd_minus2 [0] +2 ) * (l-2*mvd_sign_flag[0] );

Mvd_ can be calculated as follows:

Mvd_ = abs_mvd_greaterO_flag[l] * (abs_mvd_minus2 [1] +2 ) * ( l-2*mvd_sign_flag[l]) ;

In the above expressions of mvd x and mvd, abs_mvd_greater O_flag[0], abs_mvd_minus2[0], mvd_sign_flag[0], abs_mvd- greaterO-flag[1], abs-mvd- The meanings of minus2[l] and abs-mvd- minus2[l] can be referred to the foregoing embodiments, and are not described herein.

52. Determine, according to the determined motion vector predictor identifier of the matching block in the reference frame list of the matching block in the used reference frame list, a motion vector predictor of the current inter prediction unit (PU);

53. Add the recovered motion vector difference to the determined motion vector prediction value of the current inter prediction unit to obtain a motion vector of the matching block in the corresponding reference frame list.

When reconstructing the current image block, only one matching block in the list, or a weighted matching block obtained by matching the block weights in the two lists may be used. The selection of the list of specific uses is indicated by a corresponding syntax element in the code stream; the reconstructed current image block is obtained by adding the image prediction residual block to the (weighted) matching block.

Referring to FIG. 3, it is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown. The processing apparatus of the exemplary interframe predictive coding motion information may be an encoder of a communication system employing interframe predictive coding techniques. The apparatus for inter-predictive encoding motion information of the example of Figure 3 includes a determination module 301 and a write module 302, wherein:

The determining module 301 is configured to determine, according to the value of the syntax element, the currently used reference frame list and the motion information of the matching block that needs to be transmitted in the used reference frame list to be transmitted.

In this embodiment, the reference frame list includes at least one of a reference frame list 0 (reference list 0 ) and a reference frame list 1 (reference list 1 ), that is, may be a reference frame list 0, may be a reference frame list 1 or may It is the reference frame list 0 and the reference frame list 1, and the role of each reference frame list is the same as that of the reference frame list mentioned in the foregoing embodiment or the background art. The motion information of the matching block in the reference frame list includes a motion vector predictor flag (hereinafter referred to as MVP_flag) in addition to the reference frame index value and the motion vector difference. The motion information of the matching block in the reference frame list includes a reference frame list 0 (reference list 0 ) the motion information of the matching block and/or the motion information of the matching block in the reference frame list 1 (reference list 1 ), that is, the motion information including the matching block in the reference frame list 0, and the matching in the reference frame list 1 The motion information of the block or the motion information of the matching block in the reference frame list 0 and the motion information of the matching block in the reference frame list 1. The motion vector predictive value identifier (MVP_flag) is used to indicate whether the motion vector predictor selected by the encoder side is mvp_0 or mvp_l; when the encoder transmits the motion vector predictor identifier to the decoder end, it is equivalent to informing the decoder encoding. The motion vector predictor selected by the terminal at the time of encoding is mvp_0 or mvp_l.

Specifically, if the current PU belongs to the bidirectional prediction slice, the syntax element inter_pred_idc is transmitted, and the value may be Pred_L0, Pred_L1, or Pred_BI; further, when the value of inter_pred_idc is Pred_L0, the determining module 301 determines that the reference frame list is used. 0, and need to transmit the motion information of the matching block in the reference frame list 0. When the value of inter_pred_idc is Pred_L1, the determining module 301 determines that the reference frame list 1 is used, and the reference frame list 1 needs to be transmitted. Motion information of the block; when the value of inter_pred_idc is Pred_BI, the determining module 301 determines that the reference frame list 0 and the reference frame list 1 are used, and the motion of the matching block in the reference frame list 0 and the reference frame list 1 is required to be transmitted. information. If the current PU does not belong to the bidirectional prediction stripe, the syntax element inter_pred_idc is not transmitted, that is, the value of the syntax element inter_pred_idc defaults to Pred_0.

The writing module 302 is configured to: if the currently used reference frame list and the motion information of the matching block that needs to be transmitted in the used reference frame list are determined by the determining module 301, the determined used reference frame list matching block The motion vector predictor flag is written to the code stream prior to the determined motion vector difference related information of the matching block in the used reference frame list.

The reference frame list 1 is taken as an example to illustrate the technical solution for transmitting mvd_ / 0 related information; the technical solution for transmitting mvd - /1 related information is similar to the technical solution for transmitting mvd - / 0 related information, and will not be described again.

Specifically, the mvd_ /0 related information includes the mvd - / 0 horizontal component whose absolute value is greater than 0 (the following uses abs - mvd - greaterO - flag [0];), the absolute value of the mvd - / 0 vertical component is greater than 0 mark (hereinafter abs_mvd - greaterO - flag [l] is indicated;), mvd - /0 horizontal component absolute value is greater than 1 mark (hereinafter abs_mvd - greaterl - flag [0]), mvd - /0 The absolute value of the vertical component is greater than 1 (the following is used abs_mvd - greater l - flag [l]), mvd - / 0 horizontal component absolute value minus 2 amplitude (the following use abs - mvd - minus2 [0] Indicates), the sign of the mvd_ /0 horizontal component (below Use mvd— sign—flag[0], mvd— /0 The absolute value of the vertical component minus 2 (the following is expressed using abs_mvd_minus2[l]) and the sign of the mvd— /0 vertical component (below) Use mvd— sign—flag [1] to indicate). For abs—mvd—greater 1—flag [0] , abs mvd greaterl _flag[l] , abs_mvd_minus2 [0] , mvd — sign — flag [0] , abs — mvd — minus2[l], and mvd — sign—flag[ l] is conditional transmission, that is, if the absolute value of the mvd_ /0 horizontal component is greater than 0, then the transmission abs- mvd - greater 1 - flag [0]; if the absolute value of the mvd - / 0 vertical component is greater than 0, then Transfer abs-mvd- greaterl_flag[l]; if the absolute value of the mvd_ /0 horizontal component is greater than 1, then transmit abs-mvd- minus2[0] and mvd_sign_flag [0]; if mvd_ /0 vertical If the absolute value of the direct component is greater than 1, then transmit abs-mvd- minus2 [1] and mvd_sign_flag[l].

It should be noted that, in the implementation manner of the above-mentioned inter-predictive coding motion information processing apparatus, the division of each functional module is only an example, and the actual application may be considered according to requirements, for example, configuration requirements of corresponding hardware or convenience of implementation of software. The above function assignment is performed by different functional modules, that is, the internal structure of the inter-predictive coding motion information processing device is divided into different functional modules to complete all or part of the functions described above. Moreover, in practical applications, the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be executed by corresponding hardware. For example, the foregoing determining module may have the foregoing syntax elements. The value of the currently used reference frame and the hardware of the reference frame to be transmitted in the reference frame list, such as a determiner, may also be a general processor or other hardware device capable of executing a corresponding computer program to perform the aforementioned functions; Further, as described above, the transmission module may be configured to perform the foregoing if the currently used reference frame list and the motion information to be transmitted in the used reference frame list are determined by the determining module (or determiner), Determining, by the determined motion vector predictor value of the matching block in the used reference frame list, hardware that writes the code stream function prior to the determined motion vector difference related information of the matching block in the used reference frame list, such as a transmitter, or Perform the corresponding computer program to complete the aforementioned functions A general processor or other hardware device (the above described principles can be applied to the various embodiments provided in this specification).

The write module 302 of the example of FIG. 3 may include a first write unit 401, such as the processing device for interframe predictive encoding motion information provided by another embodiment of the present invention as shown in FIG. The first writing unit 401 is configured to first write the reference frame index value of the matching block in the determined used reference frame list into the code stream, and then The determined motion vector predictor of the matching block in the determined reference frame list identifies the write code stream, and finally writes the motion vector difference related information of the matching block in the determined used reference frame list to the code stream.

The transmission module 302 of the example of FIG. 3 may include a second writing unit 501, such as the processing apparatus for inter-predictive encoding motion information provided by another embodiment of the present invention as shown in FIG. The second writing unit 501 is configured to first write the motion vector predictor identifier of the matching block in the determined used reference frame list into the code stream, and then use the determined reference frame index value of the matching block in the determined used reference frame list. The code stream is written, and finally the motion vector difference related information of the matching block in the determined used reference frame list is written into the code stream.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of an apparatus for processing inter prediction encoding motion information according to another embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown. The processing device of the interframe predictive coding motion information exemplified in Fig. 6 may be a decoder of a communication system employing interframe predictive coding techniques. The apparatus for inter-predictive coding motion information illustrated in Fig. 6 includes a to-be-desolved determination module 601 and a parsing module 602, where:

The to-be-resolved determination module 601 is configured to determine, according to the value of the syntax element, the currently used reference frame list and the motion information of the matching block that needs to be parsed in the used reference frame list, where the reference frame list includes the reference frame list 0 and the reference frame list. At least one of 1, the motion information includes a reference frame index value, a motion vector predictor identifier, and motion vector difference related information.

The parsing module 602 is configured to: if the currently used reference frame list and the motion information of the matching block that needs to be parsed in the used reference frame list are determined by the to-be-resolved determination module 601, parse the determined used reference frame list first The motion vector predictor of the matching block identifies the motion vector difference related information of the matching block in the determined used reference frame list after the determination.

It should be noted that, in the implementation manner of the above-mentioned inter-predictive coding motion information processing apparatus, the division of each functional module is only an example, and the actual application may be considered according to requirements, for example, configuration requirements of corresponding hardware or convenience of implementation of software. The above function assignment is performed by different functional modules, that is, the internal structure of the inter-predictive coding motion information processing device is divided into different functional modules to complete all or part of the functions described above. Moreover, in practical applications, the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be executed by corresponding hardware. For example, the foregoing to-be-resolved determining module may have the foregoing basis. The value of the syntax element determines a list of reference frames currently used and a matching block to be parsed within the list of used reference frames The hardware of the motion information, such as the identifier to be parsed, may also be a general processor or other hardware device capable of executing the corresponding computer program to perform the foregoing functions; and the parsing module as described above may have the reference frame currently used to perform the foregoing. And the motion information of the matching block to be parsed in the list and the used reference frame list is determined by the to-be-resolved determining module (or the to-be-resolved determiner), and the determined matching block in the used reference frame list is first parsed The determined motion vector predictor of the matching block in the used reference frame list identifies the hardware that parses the motion vector difference related information function, such as a parser, or a general processor capable of executing a corresponding computer program to perform the foregoing functions. Or other hardware devices (the various descriptions provided in this specification apply the above described principles).

The parsing module 602 of the example of FIG. 6 may include a first extracting unit 701, such as the processing apparatus for inter-predictive encoding motion information provided by another embodiment of the present invention as shown in FIG. The first extracting unit 701 is configured to sequentially read and parse the reference frame index value, the motion vector predictor identifier, and the motion vector difference related information of the matching block in the determined reference frame list in the code stream.

The parsing module 602 of the example of FIG. 6 may also include a second extracting unit 801, such as the processing apparatus for inter-predictive encoding motion information provided by another embodiment of the present invention as shown in FIG. The second extracting unit 801 is configured to sequentially read and parse the motion vector predictor identifier, the reference frame index value, and the motion vector difference related information of the matched matching block in the used reference frame list in the code stream.

The apparatus for inter-predictive coding motion information illustrated in FIG. 6 may further include a reference frame determination module 901, a reconstruction module 902, and an acquisition module 903, such as the interframe predictive coding motion provided by another embodiment of the present invention as shown in FIG. Information processing device, wherein:

a reference frame determining module 901, configured to determine, according to the reference frame index value, a reference frame in which the matching block is located;

a reconstruction module 902, configured to reconstruct a motion vector of the matching block in the determined used reference frame list, and an obtaining module 903, configured to acquire a current frame according to the reference frame in which the determined matching block is located and the reconstructed motion vector The inter prediction unit is a matching block within the determined list of used reference frames.

The reconstruction module 902 illustrated in FIG. 9 may include a motion vector difference recovery unit 1001, a motion vector predictor determination unit 1002, and a summation unit 1003, as shown in FIG. 10, which provides inter prediction encoding motion information according to another embodiment of the present invention. Processing device, wherein:

a motion vector difference recovery unit 1001, configured to use, according to the determined reference frame used in the reference frame list The motion vector difference related information recovers the motion vector difference of the matching block in the determined used reference frame list;

Taking the reference frame list 0 as an example, the motion vector difference (mvd - /0) related information of the matching block in the reference frame list 0 includes the mvd - / 0 horizontal component (mvd - X ) and the mvd - / 0 vertical component (mvd_) The motion vector difference recovery unit 1001 can calculate mvd_X as follows:

The motion vector difference recovery unit 1001 can calculate mvd_ as follows:

Mvd_ = abs_mvd_greaterO_flag[l] * (abs_mvd_minus2 [1] +2 ) * ( l-2*mvd_sign _flag[l]) ;

In the above expressions of mvd_x and mvd-y, abs_mvd- greaterO-flag[0], abs_mvd_minus2[0], mvd_sign_flag[0], abs-mvd- greaterO-flag [1], abs - mvd - minus2 [l] and abs - mvd - minus 2 [l] meaning can be referred to the foregoing embodiment, and will not be described herein.

a motion vector predictor determining unit 1002, configured to determine, according to the determined motion vector predictor identifier of the matching block in the used reference frame list, a motion vector predictor of the current inter prediction unit; a summation unit 1003, configured to The motion vector difference of the matching block in the restored reference frame list is added to the determined motion vector prediction value of the current inter prediction unit to obtain a motion vector of the matching block in the corresponding reference frame list.

Referring to FIG. 11, FIG. 11 is a schematic structural diagram of a codec system according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown. The codec system illustrated in FIG. 11 includes the encoder 111 provided in any one of the embodiments of FIG. 3 to FIG. 5 and the decoder 112 provided in any one of FIGS. 6 to 10, wherein the encoder 111 includes the determination. The module 1111 and the transmission module 1112, the decoder 112 includes a decoder including a to-be-resolved determination module 1121 and a parsing module 1122, where:

a determining module 1111, configured to determine, according to a value of the syntax element, a currently used reference frame list and motion information of a matching block that needs to be transmitted in the used reference frame list, where the reference frame list includes a reference frame list 0 and a reference frame list 1 At least one of the motion information includes a reference frame index value, a motion vector predictor identifier, and a motion vector difference related information; The transmitting module 1112 is configured to: if the currently used reference frame list and the motion information of the matching block that needs to be transmitted in the used reference frame list are determined by the determining module 1111, match the determined used reference frame list to the matching block. The motion vector predictor identifier is written to the code stream prior to the determined motion vector difference related information of the matching block in the used reference frame list;

The to-be-resolved determination module 1121 is configured to determine, according to the value of the syntax element, the currently used reference frame list and the motion information of the matching block that needs to be parsed in the used reference frame list;

The parsing module 1122 is configured to: if the currently used reference frame list and the motion information of the matching block that needs to be parsed in the used reference frame list are determined by the to-be-resolved determining module 1121, parsing the determined used reference frame list first The motion vector predictor of the matching block identifies the motion vector difference related information of the matching block in the determined used reference frame list after the determination.

It should be noted that the information interaction, the execution process, and the like between the modules/units of the foregoing device are the same as the embodiment of the method of the present invention. Reference is made to the description in the method embodiment of the present invention, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or a portion of the various methods of the above-described embodiments can be performed by a program to instruct the associated hardware, such as one or more or all of the following various methods:

Method 1: determining, according to the value of the syntax element, the currently used reference frame list and the motion information of the matching block to be transmitted in the used reference frame list, where the reference frame list includes at least one of the reference frame list 0 and the reference frame list 1. The motion information includes a reference frame index value, a motion vector predictor identifier, and a motion vector difference related information;

And if the currently used reference frame list and the motion information of the matching block to be transmitted in the used reference frame list are determined, the motion vector predictor identifier of the matching block in the determined used reference frame list is prior to the determined The motion vector difference related information of the matching block in the reference frame list used is written to the code stream.

Method 2: Determine, according to the value of the syntax element, a currently used reference frame list and motion information of the matching block to be parsed in the used reference frame list, where the reference frame list includes at least one of the reference frame list 0 and the reference frame list 1. The motion information includes a reference frame index value, a motion vector predictor identifier, and a motion vector difference related information; If the currently used reference frame list and the motion information of the matching block to be parsed in the used reference frame list are determined, parsing the motion vector predictor identifier of the matching block in the determined used reference frame list and parsing the determination The motion vector difference related information of the matching block in the used reference frame list.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be completed by a program instructing related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Read Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

The method, device, and editing of the inter-predictive coding motion information provided by the embodiments of the present invention are described above. The description of the above embodiments is only used to help understand the method and core ideas of the present invention; The present invention is not limited by the scope of the present invention, and the details of the present invention are not limited by the scope of the present invention.

Claims

Rights request

1. A method for processing inter-frame prediction encoding motion information, characterized in that the method includes: determining the currently used reference frame list and the motion information of the matching block that needs to be transmitted in the used reference frame list according to the value of the syntax element , the reference frame list includes at least one of reference frame list 0 and reference frame list 1, and the motion information includes reference frame index value, motion vector prediction value identification and motion vector difference related information;

If the motion information of the currently used reference frame list and the matching block that needs to be transmitted in the used reference frame list is determined, the motion vector prediction value of the matching block in the determined used reference frame list is identified prior to the determined The motion vector difference related information of the matching block in the reference frame list used is written into the code stream.

2. The method according to claim 1, characterized in that: identifying the motion vector predictor value of the determined matching block in the used reference frame list precedes the motion of the determined matching block in the used reference frame list. The vector difference related information written into the code stream includes:

First, write the reference frame index value of the matching block in the determined reference frame list into the code stream, then write the motion vector prediction value identifier of the matching block in the determined reference frame list into the code stream, and finally write the reference frame index value of the matching block in the determined reference frame list into the code stream. The motion vector difference related information of the matching block in the determined reference frame list is written into the code stream.

3. The method of claim 1, wherein: identifying the motion vector predictor value of the determined matching block in the used reference frame list precedes the motion of the determined matching block in the used reference frame list. The vector difference related information written into the code stream includes:

First, the motion vector prediction value identifier of the matching block in the determined reference frame list is written into the code stream, then the reference frame index value of the matching block in the determined reference frame list is written into the code stream, and finally the reference frame index value of the matching block in the determined reference frame list is written into the code stream. The motion vector difference related information of the matching block in the determined reference frame list is written into the code stream.

4. A method for processing inter-frame prediction encoding motion information, characterized in that the method includes: determining the currently used reference frame list and the motion information of the matching blocks that need to be parsed in the used reference frame list according to the value of the syntax element , the reference frame list includes at least one of reference frame list 0 and reference frame list 1, and the motion information includes reference frame index value, motion vector prediction value identification and motion vector difference related information;

If the currently used reference frame list and the matching block to be parsed in the used reference frame list When the motion information is determined, first analyze the motion vector predictor identifier of the matching block in the determined used reference frame list, and then analyze the motion vector difference related information of the determined matching block in the used reference frame list.

5. The method of claim 4, wherein said first parsing the motion vector predictor identifier of the matching block in the determined used reference frame list and then parsing the determined used motion vector difference related information includes:

Sequentially read and parse the reference frame index value, motion vector prediction value identification and motion vector difference related information of the matching block in the determined reference frame list used in the code stream.

6. The method of claim 4, wherein said first parsing the motion vector predictor identifier of the matching block in the determined used reference frame list and then parsing the determined used motion vector difference related information includes:

Sequentially read and parse the motion vector predictor identifier, reference frame index value and motion vector difference related information of the matching block in the determined reference frame list used in the code stream.

7. The method of claim 4, wherein the step of first parsing the motion vector predictor identifier of the matching block in the determined used reference frame list and then parsing the determined used motion vector difference related information Afterwards, the method further includes:

Determine the reference frame where the matching block is located according to the reference frame index value;

Reconstructing the motion vector of the matching block within the determined reference frame list used;

According to the reference frame in which the determined matching block is located and the motion vector of the matching block in the reconstructed reference frame list, the matching block of the current inter prediction unit in the corresponding reference frame list is obtained.

8. The method of claim 7, wherein the reconstructing the motion vector of the matching block in the corresponding reference frame list includes:

Restore the motion vector difference of the determined matching block in the used reference frame list based on the motion vector difference related information of the determined matching block in the used reference frame list;

Determine the motion vector predictor of the current inter prediction unit according to the motion vector predictor identifier of the matching block in the determined reference frame list;

The motion vector difference of the matching block in the restored reference frame list is added to the determined motion vector prediction value of the current inter prediction unit to obtain the determined motion vector of the matching block in the used reference frame list.

9. A processing device for inter-frame prediction encoding motion information, characterized in that the device includes: a determination module, configured to determine the currently used reference frame list and the information that needs to be transmitted in the used reference frame list according to the value of the syntax element. Motion information of the matching block, the reference frame list includes at least one of reference frame list 0 and reference frame list 1, and the motion information includes a reference frame index value, a motion vector predictor identification and motion vector difference related information;

A writing module, configured to write the motion information of the matching block in the determined reference frame list if the currently used reference frame list and the motion information of the matching block that needs to be transmitted in the used reference frame list are determined by the determination module. The vector prediction value identifier is written into the code stream prior to the motion vector difference related information of the matching block in the determined reference frame list used.

10. The device according to claim 9, wherein the writing module includes: a first writing unit, configured to first write the reference frame index value of the matching block in the determined reference frame list. Then write the motion vector predictor identifier of the matching block in the determined reference frame list into the code stream, and finally write the motion vector difference related information of the determined matching block in the used reference frame list into the code stream. .

11. The device according to claim 9, wherein the writing module includes: a second writing unit, configured to first write the motion vector prediction value identifier of the matching block in the determined reference frame list. Enter the code stream, then write the reference frame index value of the matching block in the determined reference frame list into the code stream, and finally write the motion vector difference related information of the matching block in the determined reference frame list into the code stream. .

12. A processing device for inter-frame prediction encoding motion information, characterized in that the device includes: a to-be-parsed determination module, configured to determine the currently used reference frame list and the needs in the used reference frame list according to the value of the syntax element The motion information of the parsed matching block, the reference frame list includes at least one of the reference frame list 0 and the reference frame list 1, the motion information includes a reference frame index value, a motion vector predictor identification and motion vector difference related information;

A parsing module, configured to first parse the matching blocks in the determined reference frame list if the motion information of the currently used reference frame list and the matching block that needs to be parsed in the used reference frame list is determined by the to-be-parsed determination module. After identifying the motion vector predictor, the motion vector difference related information of the matching block in the determined reference frame list is analyzed.

13. The device according to claim 12, wherein the parsing module includes: a first extraction unit, configured to sequentially read and parse the references of matching blocks in the determined reference frame list used in the code stream. Frame index value, motion vector predictor identification and motion vector difference related information.

14. The device according to claim 12, wherein the parsing module includes: a second extraction unit, configured to sequentially read and parse the motion of matching blocks within the determined reference frame list in the code stream. Vector prediction value identification, reference frame index value and motion vector difference related information.

15. The device of claim 12, wherein the device further includes: a reference frame determination module, configured to determine the reference frame in which the matching block is located based on the reference frame index value; a reconstruction module, configured to reconstruct the The motion vector of the matching block in the determined reference frame list; an acquisition module, configured to obtain the current inter-frame prediction based on the reference frame in which the determined matching block is located and the motion vector of the matching block in the reconstructed reference frame list. The matching block of the unit within the corresponding reference frame list.

16. The device according to claim 15, wherein the reconstruction module includes: a motion vector difference restoration unit, configured to restore the motion vector difference related information of the matching block in the determined reference frame list. The determined motion vector difference of the matching block in the used reference frame list; a motion vector predictor determination unit, configured to determine the motion vector of the current inter prediction unit according to the determined motion vector predictor identifier of the matching block in the used reference frame list Predictive value;

A summation unit configured to add the motion vector difference of the matching block in the restored reference frame list to the determined motion vector prediction value of the current inter prediction unit to obtain the determined matching within the used reference frame list. The motion vector of the block.

17. A coding and decoding system, characterized in that the coding and decoding system includes an encoder and a decoder, the encoder includes a determination module and a writing module, and the decoder includes a determination module to be parsed and a parsing module;

The determination module is configured to determine the currently used reference frame list and the motion information of the matching blocks that need to be transmitted in the used reference frame list according to the value of the syntax element. The reference frame list includes reference frame list 0 and reference frame list 1. At least one of, the motion information includes a reference frame index value, a motion vector predictor identifier, and motion vector difference related information;

The writing module is used if the currently used reference frame list and the used reference frame list are needed When the motion information of the matching block to be transmitted is determined by the determination module, the motion vector prediction value of the matching block in the determined used reference frame list is identified prior to the motion vector of the matching block in the determined used reference frame list. The difference related information is written into the code stream;

The to-be-parsed determination module is used to determine the currently used reference frame list and the motion information of the matching blocks that need to be parsed in the used reference frame list according to the value of the syntax element;

The parsing module is configured to first parse the determined reference frame list if the motion information of the currently used reference frame list and the matching block that needs to be parsed in the used reference frame list is determined by the to-be-parsed determination module. After identifying the motion vector predictor of the matching block, the motion vector difference related information of the matching block in the determined reference frame list is analyzed.