-
公开(公告)号：US20210266591A1
公开(公告)日：2021-08-26
申请号：US17319950
申请日：2021-05-13
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/52 , H04N19/167 , H04N19/196 , H04N19/176 , H04N19/105
Abstract: Pruning method for History-based affine parameters is described. In an exemplary aspect, a method for video processing includes deriving, for a conversion between a current block of video and a bitstream representation of the current block, a first set of affine parameters associated with affine model for the current block; comparing the first set of affine parameters to one or more of sets of affine parameters stored in a buffer for storing affine parameters so as to determine whether the first set of affine parameters is same or similar to at least one set of affine parameters; and deciding whether or how to update the buffer for storing affine parameters based on the determination.
-
公开(公告)号：US20210266587A1
公开(公告)日：2021-08-26
申请号：US17228935
申请日：2021-04-13
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/52 , H04N19/176 , H04N19/184
Abstract: A video processing method includes generating, for a conversion between a current block of a video and a bitstream representation of the video, a motion vector for the current block; invoking a weighted prediction processing tool or a second processing tool in a mutually exclusive manner; and performing the conversion according to the invoking. The invoking of the second processing tool comprises refining the motion vector.
-
公开(公告)号：US20210250587A1
公开(公告)日：2021-08-12
申请号：US17239615
申请日：2021-04-25
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/139 , H04N19/196 , H04N19/159 , H04N19/176 , H04N19/105 , H04N19/513
Abstract: The present disclosure relates to overlapped block motion compensation with derived motion from neighbors. A method for video processing, comprising: determining, during a conversion between a current block of visual media data and a corresponding coded representation of the visual media data, at least one neighboring block for the current block; determining motion information of the at least one neighboring block; and performing Overlapped Block Motion Compensation (OBMC) for the current block based on the motion information of the at least one neighboring block, wherein the OBMC includes using an intermediate prediction values of one sub-block of the current block and a prediction values of at least one neighboring sub-block to generating a final prediction values of the sub-block.
-
公开(公告)号：US20210243438A1
公开(公告)日：2021-08-05
申请号：US17228903
申请日：2021-04-13
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/119 , H04N19/139 , H04N19/176 , H04N19/196 , H04N19/105 , H04N19/513
Abstract: A method for processing a video includes performing a determination, by a processor, that a first video block is partitioned to include a first prediction portion that is non-rectangular and non-square; adding a first motion vector (MV) prediction candidate associated with the first prediction portion to a motion candidate list associated with the first video block, wherein the first MV prediction candidate is derived from a sub-block MV prediction candidate; and performing further processing of the first video block using the motion candidate list.
-
公开(公告)号：US20210243434A1
公开(公告)日：2021-08-05
申请号：US17238518
申请日：2021-04-23
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/105 , H04N19/137 , H04N19/159 , H04N19/30 , H04N19/176
Abstract: Devices, systems and methods for the simplification of sub-block motion candidate lists for video coding are described. In a representative aspect, a method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, one or more temporal motion vector prediction candidates for the current block and performing the conversion based on the one or more temporal motion vector prediction candidates. The one or more temporal motion vector prediction candidates are determined by identifying a first temporal adjacent block of the current block based on an initial motion vector, wherein the first temporal adjacent block includes invalid motion information, and examining additional temporal adjacent blocks of the current block to obtain the one or more temporal motion vector prediction candidates.
-
Patent Agency Ranking
公开(公告)号：US20210235109A1
公开(公告)日：2021-07-29
申请号：US17230048
申请日：2021-04-14
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/52 , H04N19/105 , H04N19/119 , H04N19/176 , H04N19/186 , H04N19/55 , H04N19/96
Abstract: A video processing method is provided to include: determining, based on a position rule, whether a local illumination compensation (LIC) tool is enabled for a conversion between a current block in a video region of a video and a coded representation of the video, and performing the conversion based on the position rule. The position rule specifies that the LIC tool is enabled for blocks on boundaries of the video region and disabled for blocks inside the video region and the LIC tool includes using a linear model of illumination changes in the current block during the conversion.
-
公开(公告)号：US20210235073A1
公开(公告)日：2021-07-29
申请号：US17228959
申请日：2021-04-13
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/105 , H04N19/189 , H04N19/159 , H04N19/176
Abstract: A video processing method includes constructing, for a conversion between a current block of a video and a bitstream representation of the video, a motion candidate list with at least one motion candidate; and determining, based on a candidate type of a first motion candidate, whether a generalized bi-prediction (GBI) processing tool is enabled. The GBI processing tool comprises deriving a final prediction based on applying equal or unequal weights to predictions from different reference lists according to a set of weights. The method also includes performing the conversion according to the determining.
-
公开(公告)号：US20210218985A1
公开(公告)日：2021-07-15
申请号：US17220127
申请日：2021-04-01
Inventor： Hongbin LIU , Li ZHANG , Kai ZHANG , Yue WANG
IPC: H04N19/52 , H04N19/126 , H04N19/176
Abstract: Devices, systems and methods for asymmetric weighted bi-predictive merging in video coding are described. In a representative aspect, a method for decoding video data includes determining that a current video block of the video data is predicted from an asymmetric bi-predictive merge candidate, wherein different weights are used for a first reference block and a second reference block, and making, based on the determination, a determination between enabling and disabling a coding tool for the current video block. In a case that the current video block is predicted from an asymmetric bi-predictive merge candidate, the coding tool is not applied to the current video block.
-
公开(公告)号：US20210218980A1
公开(公告)日：2021-07-15
申请号：US17210797
申请日：2021-03-24
Inventor： Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/513 , H04N19/577 , H04N19/105 , H04N19/159
Abstract: A video coding or decoding method includes using history-based motion vector prediction (HMVP) for conversion between multiple video blocks including a current block of video and a bitstream representation of the multiple video blocks such that for a uni-predicted block that for which a single reference picture is used for motion compensation, refraining from updating a look-up table for HMVP candidates for the uni-predicted block. The video coding or decoding method further includes performing the conversion using look-up tables for the multiple video blocks.
-
公开(公告)号：US20210211681A1
公开(公告)日：2021-07-08
申请号：US17201711
申请日：2021-03-15
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Jizheng XU , Yue WANG
IPC: H04N19/149 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/30 , H04N19/593 , H04N19/159 , H04N19/11 , H04N19/50
Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, parameters of a cross-component linear model that are completely determinable by two chroma samples and corresponding two luma samples; and performing the conversion based on the determining.
-
-
-
-
-
-
-
-
-
Search Results
456
records
(took 0.033 seconds)
