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公开(公告)号：EP4362464A2
公开(公告)日：2024-05-01
申请号：EP23219999.2
申请日：2018-12-27
发明人： MA, Xiang , YANG, Haitao , CHEN, Huanbang , GAO, Shan
IPC分类号： H04N19/52
CPC分类号： H04N19/176 , H04N19/52 , H04N19/577 , H04N19/56
摘要： This application provides a picture prediction method and apparatus, and a codec. The method includes: obtaining initial motion information of a current picture block; determining positions of N forward reference blocks and positions of N backward reference blocks based on the initial motion information and a position of the current picture block; determining, from positions of M pairs of reference blocks based on a matching cost criterion, that positions of a pair of reference blocks are a position of a target forward reference block of the current picture block and a position of a target backward reference block of the current picture block, where positions of each pair of reference blocks include a position of a forward reference block and a position of a backward reference block; and for the positions of each pair of reference blocks, a first position offset and a second position offset are in a mirror relationship; and obtaining a predicted value of a pixel value of the current picture block based on a pixel value of the target forward reference block and a pixel value of the target backward reference block. This application can improve picture prediction accuracy and reduce picture prediction complexity.
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公开(公告)号：EP4304172A1
公开(公告)日：2024-01-10
申请号：EP23175530.7
申请日：2016-07-12
发明人： CHEN, Huanbang , LIN, Sixin , YANG, Haitao , GAO, Shan
IPC分类号： H04N19/117 , H04N19/139 , H04N19/176 , H04N19/86 , H04N19/52 , H04N19/583
摘要： The present invention relates to the field of video image processing, and provides a filtering method for removing a blocking artifact and an apparatus, to resolve a problem that subjective quality and objective quality of an image deteriorate because filtering processing cannot be performed on an internal compensation block of a prediction unit. The method includes: dividing a prediction unit into at least two subunits; traversing each of the at least two subunits, and determining at least one filtering boundary of the at least two subunits based on a preset rule; obtaining a first pixel value of a first subunit and a first pixel value of a second subunit, where the first subunit and the second subunit are adjacent to the filtering boundary; and performing, based on the first pixel value of the first subunit and the first pixel value of the second subunit, filtering processing on pixels adjacent to the filtering boundary.
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公开(公告)号：EP4029248A2
公开(公告)日：2022-07-20
申请号：EP20822584.7
申请日：2020-09-30
发明人： SYCHEV, Maxim Borisovitch , CHEN, Huanbang , KARABUTOV, Alexander Alexandrovich , CHERNYAK, Roman Igorevich , IKONIN, Sergey Yurievich , YANG, Haitao , ALSHINA, Elena Alexandrovna , SOLOVYEV, Timofey Mikhailovich
IPC分类号： H04N19/105 , H04N19/139 , H04N19/573
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公开(公告)号：EP3955576A1
公开(公告)日：2022-02-16
申请号：EP19929484.4
申请日：2019-08-15
发明人： CHEN, Huanbang , YANG, Haitao , ZHANG, Lian
IPC分类号： H04N19/52
摘要： This application discloses an inter prediction method, where a to-be-processed block includes one or more subblocks, and the method includes: determining a temporal offset vector of the to-be-processed block based on a spatially neighboring block of the to-be-processed block, where the temporal offset vector is used to determine a collocated subblock of the subblock of the to-be-processed block; and determining a motion vector of the subblock of the to-be-processed block based on a motion vector of the collocated subblock, where the motion vector of the subblock of the to-be-processed block is obtained based on a first preset motion vector when the motion vector of the collocated subblock is unavailable. This application can improve prediction accuracy in coding and increase coding efficiency.
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公开(公告)号：EP3954122A1
公开(公告)日：2022-02-16
申请号：EP20791543.0
申请日：2020-04-20
发明人： SOLOVYEV, Timofey Mikhailovich , IKONIN, Sergey Yurievich , CHERNYAK, Roman Igorevich , KARABUTOV, Alexander Alexandrovich , ALSHINA, Elena Alexandrovna , CHEN, Huanbang
IPC分类号： H04N19/139 , H04N19/176
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公开(公告)号：EP3840382A1
公开(公告)日：2021-06-23
申请号：EP19855516.1
申请日：2019-06-13
发明人： FU, Ting , CHEN, Huanbang , YANG, Haitao
IPC分类号： H04N19/503
摘要： This application provides an inter prediction method and apparatus, a video encoder, and a video decoder. The method includes: determining N target picture blocks from M picture blocks in which M neighboring locations of a current picture block are respectively located, where any two of the N target picture blocks are different, M and N are both positive integers, and M is greater than or equal to N; determining candidate motion information of the current picture block based on motion information of the N target picture blocks, and adding the candidate motion information of the current picture block to a motion information candidate list of the current picture block; and performing inter prediction on the current picture block based on the motion information candidate list. In this application, comparison operations during obtaining of the motion information candidate list can be reduced, to improve inter prediction efficiency.
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公开(公告)号：EP3703372A1
公开(公告)日：2020-09-02
申请号：EP18885344.4
申请日：2018-12-05
发明人： GAO, Shan , XU, Weiwei , CHEN, Huanbang , YANG, Haitao
IPC分类号： H04N19/52 , H04N19/513 , H04N19/61 , H04N19/176 , H04N19/523 , H04N19/53
摘要： This application provides an inter prediction method and apparatus, and a terminal device. The inter prediction method includes: obtaining a location of a target adjacent image block of a current image block; obtaining a preset correspondence between an adjacent image block location and motion vector precision, where in the correspondence, locations of at least two adjacent image blocks are corresponding to different motion vector precision; determining, based on the location of the target adjacent image block and the correspondence, target motion vector precision corresponding to the target adjacent image block; and determining a motion vector predictor of the current image block based on the location of the target adjacent image block and the target motion vector precision. According to this application, complexity of inter prediction can be reduced.
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公开(公告)号：EP3249927B1
公开(公告)日：2020-07-29
申请号：EP15882368.2
申请日：2015-08-12
发明人： LIN, Sixin , CHEN, Huanbang
IPC分类号： H04N19/513 , H04N19/124 , H04N19/176 , H04N19/196 , H04N19/157
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公开(公告)号：EP4404571A3
公开(公告)日：2024-10-16
申请号：EP24162829.6
申请日：2019-12-03
发明人： CHEN, Huanbang , YANG, Haitao , CHEN, Jianle
IPC分类号： H04N19/119 , H04N19/577
摘要： This application discloses an inter prediction method and apparatus. The method includes: determining a plurality of first picture blocks in a to-be-processed picture block based on a preset picture split width, a preset picture split height, and a width and a height of the to-be-processed picture block; separately performing bi-directional optical flow prediction on the plurality of first picture blocks to obtain a predictor of each first picture block; and obtaining a predictor of the to-be-processed picture block with a combination of the predictors of the plurality of first picture blocks. The apparatus includes a determining module, a prediction module, and a combination module. In this application, complexity of implementing inter prediction can be reduced, and processing efficiency can be improved.
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公开(公告)号：EP4404571A2
公开(公告)日：2024-07-24
申请号：EP24162829.6
申请日：2019-12-03
发明人： CHEN, Huanbang , YANG, Haitao , CHEN, Jianle
IPC分类号： H04N19/577
CPC分类号： H04N19/577 , H04N19/159 , H04N19/107 , H04N19/119 , H04N19/96 , H04N19/136
摘要： This application discloses an inter prediction method and apparatus. The method includes: determining a plurality of first picture blocks in a to-be-processed picture block based on a preset picture split width, a preset picture split height, and a width and a height of the to-be-processed picture block; separately performing bi-directional optical flow prediction on the plurality of first picture blocks to obtain a predictor of each first picture block; and obtaining a predictor of the to-be-processed picture block with a combination of the predictors of the plurality of first picture blocks. The apparatus includes a determining module, a prediction module, and a combination module. In this application, complexity of implementing inter prediction can be reduced, and processing efficiency can be improved.
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