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公开(公告)号：US11470331B2
公开(公告)日：2022-10-11
申请号：US17154680
申请日：2021-01-21
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/107 , H04N19/159 , H04N19/105 , H04N19/96 , H04N19/176 , H04N19/186 , H04N19/577 , H04N19/117
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 coded using a combined inter and intra prediction (CIIP) coding technique and a bitstream representation of the video, an intra-prediction mode of the current block independently from an intra-prediction mode of a neighboring 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：US11463711B2
公开(公告)日：2022-10-04
申请号：US17201896
申请日：2021-03-15
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/119 , H04N19/583 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/132
Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.
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公开(公告)号：US20220312008A1
公开(公告)日：2022-09-29
申请号：US17837216
申请日：2022-06-10
Inventor： Yang WANG , Li ZHANG , Hongbin LIU , Kai ZHANG , Zhipin DENG , Yue WANG
IPC: 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：US11457226B2
公开(公告)日：2022-09-27
申请号：US17361747
申请日：2021-06-29
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/184 , H04N19/52 , H04N19/70 , H04N19/169 , H04N19/105 , H04N19/119 , H04N19/46 , H04N19/51 , H04N19/159 , H04N19/139 , H04N19/196 , H04N19/513 , H04N19/137 , H04N19/583 , G06T7/223 , G06T9/40
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.
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公开(公告)号：US11457220B2
公开(公告)日：2022-09-27
申请号：US17343041
申请日：2021-06-09
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/00 , H04N19/176 , H04N19/593 , H04N19/182 , H04N19/70 , H04N19/159 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/12 , H04N19/60 , H04N19/82 , H04N19/186
Abstract: Devices, systems, and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes determining, for encoding a current video block of a video into a bitstream representation of the current video block, a type of neighboring samples of the current video block to be used according to a rule, and adding, based on the determining, an encoded representation of the current video block to the bitstream representation, where the current video block is encoded using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation.
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Patent Agency Ranking
公开(公告)号：US20220303571A1
公开(公告)日：2022-09-22
申请号：US17831074
申请日：2022-06-02
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/517 , H04N19/176 , H04N19/70
Abstract: A method of visual media processing, includes: performing a conversion between a current video block of a visual media data and a bitstream representation of the visual media data according to a modification rule, wherein the current video block is coded using affine motion information; wherein the modification rule specifies to modify an affine motion information coded in the bitstream representation using motion vector differences and/or reference picture indices during decoding.
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公开(公告)号：US20220303533A1
公开(公告)日：2022-09-22
申请号：US17824304
申请日：2022-05-25
Inventor： Zhipin DENG , Li ZHANG , Hongbin LIU , Kai ZHANG , Jizheng XU , Yang WANG , Yue WANG
IPC: H04N19/119 , H04N19/137 , H04N19/132 , H04N19/176 , H04N19/70
Abstract: A method of video processing is provided to comprise: performing a conversion between a current video block of a video and a bitstream representation of the video, wherein, during the conversion, a use of a geometric partitioning mode is allowed for the current video block, and wherein parameters of the geometric partitioning mode are computed using a set of angles including a first number of angles that is less than a first threshold value and/or a set of distances including a second number of distances that is less than a second threshold value.
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公开(公告)号：US11451797B2
公开(公告)日：2022-09-20
申请号：US17011131
申请日：2020-09-03
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/107 , H04N19/176 , H04N19/105 , H04N19/117 , H04N19/119 , H04N19/583 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/132
Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.
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公开(公告)号：US11445183B2
公开(公告)日：2022-09-13
申请号：US17528288
申请日：2021-11-17
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/00 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: A method of video processing is described. The method includes deriving, for a current video block of a video that is a chroma block and coded in a chroma DM mode, an intra prediction mode for the current video block according to a rule related to a coding mode of the current video block; and performing a conversion between the current video block and a coded presentation of the video, wherein the rule specifies to derive the intra prediction mode based on an intra prediction direction of a corresponding luma block used to derive the chroma DM mode and coded using a block differential pulse code modulation representation of a quantized residual block corresponding to the current video block.
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公开(公告)号：US11438635B2
公开(公告)日：2022-09-06
申请号：US17110052
申请日：2020-12-02
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Hsiao Chiang Chuang , Yue Wang
IPC: H04N11/02 , H04N19/96 , H04N19/176 , H04N19/184 , H04N19/119 , H04N19/189 , H04N19/169 , H04N19/46
Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques are described. An exemplary method for visual media decoding includes applying, to a current visual media block, a partitioning process that splits the current visual media block into more than four sub-blocks; decoding, based on a bitstream representation, the more than four sub-blocks; and decoding, based on the more than four sub-blocks and the partitioning process, the current visual media block. Another exemplary method for visual media encoding includes receiving input data associated with a current visual media block; applying, to the input data, a partitioning process that splits the current visual media block into more than four sub-blocks; encoding, based on the partitioning process, the more than four sub-blocks; and generating, based on the encoding, a bitstream representation of the current visual media block.
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