-
公开(公告)号：US11659164B1
公开(公告)日：2023-05-23
申请号：US17406284
申请日：2021-08-19
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu
IPC: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/169 , H04N19/30
CPC classification number: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/1883 , H04N19/30
Abstract: A method for visual media processing, including: computing, during a conversion between a current video block of visual media data and a bitstream representation of the current video block, a cross-component linear model (CCLM) and/or a chroma residual scaling (CRS) factor for the current video block based, at least in part, on neighboring samples of a corresponding luma block which covers a top-left sample of a collocated luma block associated with the current video block, wherein one or more characteristics of the current video block are used for identifying the corresponding luma block.
-
公开(公告)号：US11659162B2
公开(公告)日：2023-05-23
申请号：US17230048
申请日：2021-04-14
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/105 , H04N19/119 , H04N19/176 , H04N19/436 , H04N19/70 , H04N19/186 , H04N19/52 , H04N19/55 , H04N19/96
CPC classification number: H04N19/105 , H04N19/119 , H04N19/176 , H04N19/186 , H04N19/436 , H04N19/52 , H04N19/55 , H04N19/70 , 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：US11653020B2
公开(公告)日：2023-05-16
申请号：US17204448
申请日：2021-03-17
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/52 , H04N19/176 , H04N19/184 , H04N19/70 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/186 , H04N19/513 , H04N19/56 , H04N19/53 , G06T7/223 , H04N19/139 , H04N19/523 , H04N19/567
CPC classification number: H04N19/52 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/513 , H04N19/53 , H04N19/56 , H04N19/70 , G06T7/223 , H04N19/139 , H04N19/523 , H04N19/567
Abstract: A method for video processing is provided. The method includes determining, based on a coding mode of a parent coding unit of a current coding unit that uses an affine coding mode or a rate-distortion (RD) cost of the affine coding mode, a usage of an adaptive motion vector resolution (AMVR) for a conversion between a coded representation of a current block of a video and the current block; and performing the conversion according to a result of the determining.
-
公开(公告)号：US11652998B2
公开(公告)日：2023-05-16
申请号：US17701224
申请日：2022-03-22
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/82 , H04N19/132 , H04N19/105 , H04N19/176 , H04N19/117
CPC classification number: H04N19/132 , H04N19/105 , H04N19/117 , H04N19/176 , H04N19/82
Abstract: An example method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, that one or more samples of the video outside the current block are unavailable for a coding process of the conversion. The coding process comprises an adaptive loop filter (ALF) coding process. The method also includes performing, based on the determining, the conversion by using padded samples for the one or more samples of the video. The padded samples are generated by checking for availability of samples in an order.
-
公开(公告)号：US11652987B2
公开(公告)日：2023-05-16
申请号：US17580446
申请日：2022-01-20
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/186
CPC classification number: H04N19/159 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/186
Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes performing a conversion between a video comprising luma blocks and corresponding chroma blocks and a bitstream representation of the video according to a rule that specifies that, for a case that a current luma block is coded using a palette coding mode and a corresponding current chroma block coded with a derived mode, the current luma block is treated as having a default intra prediction mode and the current chroma block is coded with the default intra prediction mode.
-
Patent Agency Ranking
公开(公告)号：US11641478B2
公开(公告)日：2023-05-02
申请号：US17675843
申请日：2022-02-18
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/33 , H04N19/159 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/157 , H04N19/167 , H04N19/70 , H04N19/18 , H04N19/30 , H04N19/176 , H04N19/50 , H04N19/61
Abstract: A video processing method includes determining, fora conversion between a video block of a video and a coded representation of the video, factors of a scaling tool based on a coding mode of the video block; and performing the conversion using the scaling tool, wherein the use of the scaling tool comprises: scaling at least some coefficients representing the video block during encoding or descaling at least some coefficients from the coded representation during decoding.
-
公开(公告)号：US11641474B2
公开(公告)日：2023-05-02
申请号：US17246794
申请日：2021-05-03
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/70 , H04N19/159 , H04N19/149 , H04N19/132 , H04N19/30 , H04N19/593 , 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, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.
-
公开(公告)号：US11638038B2
公开(公告)日：2023-04-25
申请号：US17718785
申请日：2022-04-12
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/46 , H04N19/70 , H04N19/159 , H04N19/176 , H04N19/174 , H04N19/169
Abstract: An example method of video processing includes performing a conversion between a video picture of a video and a bitstream representation of the video. The bitstream representation conforms to a format rule. The format rule specifies that applicability of a Decoder-side Motion Vector Refinement coding tool and a Bi-Directional Optical Flow coding tool for the video picture are indicated separately in the bitstream representation.
-
公开(公告)号：US20230117813A1
公开(公告)日：2023-04-20
申请号：US18083956
申请日：2022-12-19
Inventor： Zhipin Deng , Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/30 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/146 , H04N19/196 , H04N19/96
Abstract: A method for visual media processing, including performing a conversion between a current chroma video block of visual media data and a bitstream representation of the current chroma video block. During the conversion, a chroma residual of the current chroma video block is scaled based on a scaling coefficient. The scaling coefficient is derived at least based on luma samples located in predefined positions.
-
公开(公告)号：US11632548B2
公开(公告)日：2023-04-18
申请号：US17244533
申请日：2021-04-29
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang , Na Zhang
IPC: H04N19/119 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/176 , H04N19/139 , H04N19/159 , H04N19/52 , H04N19/46
Abstract: Devices, systems and methods for digital video coding, which include geometric partitioning, are described. An exemplary method for video processing includes making a decision, based on a priority rule, regarding an order of insertion of motion candidates into a motion candidate list for a conversion between a current block of video and a bitstream representation of the video, wherein the current block is coded using a geometry partition mode; and performing, based on the decision and the motion candidate list, the conversion.
-
-
-
-
-
-
-
-
-
Search Results
1201
records
(took 0.025 seconds)
