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公开(公告)号：US12069292B2
公开(公告)日：2024-08-20
申请号：US17209382
申请日：2021-03-23
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/52 , H04N19/176 , H04N19/184
CPC classification number: H04N19/52 , H04N19/176 , H04N19/184
Abstract: A method of video processing includes: determining an affine mode type to be applied to a current block coded in an affine mode in a video frame, wherein the current block is split into a plurality of sub-blocks; and deriving motion information for each of the plurality of sub-blocks based on the affine mode type, at least one control point (CP) motion vector (MV) at a specific location being derived and stored for predicting other blocks to be processed subsequently.
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公开(公告)号：US12069282B2
公开(公告)日：2024-08-20
申请号：US17461150
申请日：2021-08-30
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/423 , H04N19/132 , H04N19/137 , H04N19/152 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/96
CPC classification number: H04N19/423 , H04N19/137 , H04N19/152 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/593 , H04N19/70 , H04N19/96 , H04N19/132
Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.
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公开(公告)号：US20240267554A1
公开(公告)日：2024-08-08
申请号：US18633867
申请日：2024-04-12
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/52 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/88
CPC classification number: H04N19/52 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/88
Abstract: Devices, systems and methods for encoding and decoding digital video using a look-up tables (LUTs) containing motion candidates are described. A method of video processing includes maintaining one or more tables, at least one table of the one or more tables is associated with one or more entries, deriving, based on a first set of motion candidates in the at least one table, a second set of motion candidates, and performing, based on the second set of motion candidates, a conversion between a current block of a video and a bitstream representation of the video.
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公开(公告)号：US12028535B2
公开(公告)日：2024-07-02
申请号：US17714480
申请日：2022-04-06
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/00 , H04N19/117 , H04N19/159 , H04N19/186 , H04N19/70
CPC classification number: H04N19/186 , H04N19/117 , H04N19/159 , H04N19/70
Abstract: A method for video processing is provided to include: performing a conversion between a current video block of a video and a coded representation of current video block, wherein the conversion uses a coding mode in which the current video block is constructed based on a first domain and a second domain and/or chroma residue is scaled in a luma-dependent manner, and wherein information used for the coding mode is signaled in a parameter set that is different from a sequence parameter set (SPS), a video parameter set (VPS), a picture parameter set (PPS), or an adaptation parameter set (APS) used for carrying adaptive loop filtering (ALF) parameters.
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公开(公告)号：US11997264B2
公开(公告)日：2024-05-28
申请号：US17519269
申请日：2021-11-04
Inventor： Jiexi Wang , Jizheng Xu , Jaehong Chon , Weijia Zhu , Li Zhang , Yue Wang
IPC: H04N19/117 , H04N19/176 , H04N19/186 , H04N19/86
CPC classification number: H04N19/117 , H04N19/176 , H04N19/186 , H04N19/86
Abstract: A method for processing video data is described and the method includes: deriving, for a conversion between a video processing unit of the video and a bitstream of the video processing unit, at least one deblocking filter associated with a chroma deblocking filter process of the video processing unit; applying a same deblocking filter from the at least one deblocking filter for all chroma components of the video processing unit; and performing the conversion based on the same deblocking filter.
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Patent Agency Ranking
公开(公告)号：US20240171753A1
公开(公告)日：2024-05-23
申请号：US18513134
申请日：2023-11-17
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/159 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/176 , H04N19/186 , H04N19/577 , H04N19/96
CPC classification number: H04N19/159 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/176 , H04N19/186 , H04N19/577 , H04N19/96
Abstract: Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether a combined inter and intra prediction (CIIP) coding technique is to be applied to the current block based on a characteristic of the current block. The CIIP coding technique uses an intermedia inter prediction value and an intermedia intra prediction value to derive a final prediction value of the current block. The method also includes performing the conversion based on the determining.
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公开(公告)号：US11985340B2
公开(公告)日：2024-05-14
申请号：US17319909
申请日：2021-05-13
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/423 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/30 , H04N19/513 , H04N19/52
CPC classification number: H04N19/423 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/30 , H04N19/513 , H04N19/52
Abstract: History-based affine parameters inheritance 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, affine related information associated with an affine model to be used by the current block based on affine related information associated with an affine model used by a first block stored in a buffer, wherein the first block is affine coded prior to the current block; and performing the conversion by using the derived affine related information.
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公开(公告)号：US11985317B2
公开(公告)日：2024-05-14
申请号：US18154333
申请日：2023-01-13
Inventor： Jizheng Xu , Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Yue Wang
IPC: H04N19/122 , H04N19/103 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/46 , H04N19/60 , H04N19/124
CPC classification number: H04N19/122 , H04N19/103 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/46 , H04N19/60 , H04N19/124
Abstract: Methods, systems, and devices for coefficient scaling for high-precision image and video coding are described. An example method of video processing includes performing a conversion between a current block of a video and a bitstream representation of the video according to a rule. The rule specifies that the conversion includes during encoding, skipping applying a forward transform to residual coefficients of the current block prior to including in the bitstream representation, or during decoding, reconstructing residual coefficients of the current block from the bitstream representation without applying an inverse transform. The rule further specifies that a scale factor is applied to the residual coefficients independent of a size of the current block.
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公开(公告)号：US11979567B2
公开(公告)日：2024-05-07
申请号：US17982038
申请日：2022-11-07
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Zhipin Deng , Yue Wang
IPC: H04N19/00 , H04N19/117 , H04N19/186 , H04N19/96
CPC classification number: H04N19/117 , H04N19/186 , H04N19/96
Abstract: A method for video processing is described. The method includes determining, for a conversion between a video unit of a video and a bitstream representation of the video, whether to enable a mirrored padding process for padding an unavailable luma sample during an application of a loop filtering tool to the video unit; and performing the conversion based on the determining.
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公开(公告)号：US11973931B2
公开(公告)日：2024-04-30
申请号：US17691910
申请日：2022-03-10
Inventor： Yang Wang , Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/132 , H04N19/103 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/50
CPC classification number: H04N19/103 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/50
Abstract: A method of video processing is described. The method includes: deriving, for a conversion between a current block of a video and a coded representation of the video, a prediction block for the current block that is determined according to a tool in which weights are used to determine a weighted sum of two initial prediction blocks used to determine the prediction block; and performing the conversion using the prediction block; wherein the deriving includes: applying the weights to two intermediate prediction samples that respectively belong to the two initial prediction blocks to derive a final prediction sample; and performing a right shift operation for the final prediction sample, wherein the right shift operation is pbSample>> (shift1+3)), wherein pbSample represents the final prediction sample, shift1 is set equal to Max(2, 14−bitDepth); and determining the prediction block based on the final prediction sample.
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