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公开(公告)号：US11425389B2
公开(公告)日：2022-08-23
申请号：US17342951
申请日：2021-06-09
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/159 , H04N19/176 , H04N19/70 , H04N19/186 , H04N19/132 , H04N19/105 , H04N19/12 , H04N19/60 , H04N19/117 , H04N19/82
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 generating, for a conversion between a current video block of a video and a coded representation of the current video block, a most probable mode (MPM) list based on a rule, where the rule is based on whether a neighboring video block of the current video block is coded with a matrix based intra prediction (MIP) mode, and performing the conversion between the current video block and the coded representation of the current video block using the MPM list, where the conversion applies a non-MIP mode to the current video block, and where the non-MIP mode is different from the MIP mode.
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公开(公告)号：US11418798B2
公开(公告)日：2022-08-16
申请号：US17201896
申请日：2021-03-15
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/107 , H04N19/583 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/105 , H04N19/117 , H04N19/119
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：US11412268B2
公开(公告)日：2022-08-09
申请号：US17405304
申请日：2021-08-18
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/70 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/132 , H04N19/17 , H04N19/30
Abstract: Devices, systems and methods related to management of syntax flags with respect chroma formats in video processing are described. In one representative aspect, a video decoding method includes determining, based on a chroma format of a video comprising a region, whether one or more syntax flags applicable to the region of the video are absent in a syntax structure of a coded representation of the video. The one or more syntax flags are indicative of usage of a luma-dependent chroma residue scaling coding step for representing the region in the coded representation. The luma-dependent chroma residue scaling coding step comprises a scaling process in which a scaling coefficient is derived based on reconstructed luma samples and the scaling process is applied to a chroma residue. The method also includes generating one or more decoded video blocks of the video region by parsing the coded representation according to the determining.
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公开(公告)号：US11412232B2
公开(公告)日：2022-08-09
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：US11405633B1
公开(公告)日：2022-08-02
申请号：US17356275
申请日：2021-06-23
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/186 , H04N19/176
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, a modified motion vector set; and performing the conversion based on the modified motion vector set. Due to the current block satisfying a condition, the modified motion vector set is a modified version of a motion vector set associated with the current block.
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Patent Agency Ranking
公开(公告)号：US11381848B2
公开(公告)日：2022-07-05
申请号：US17090276
申请日：2020-11-05
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Hsiao Chiang Chuang , Yue Wang
IPC: H04N19/96 , H04N19/119 , H04N19/176 , H04N19/184 , 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 exactly four sub-blocks including at least one sub-block that has a size different from half of a width of the current visual media block times half of a height of the current visual media block, decoding, based on a bitstream representation, the four sub-blocks, and decoding, based on the four sub-blocks and the partitioning process, the current visual media block.
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公开(公告)号：US11375228B1
公开(公告)日：2022-06-28
申请号：US17356275
申请日：2021-06-23
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/513 , H04N19/186 , H04N19/176
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, a modified motion vector set; and performing the conversion based on the modified motion vector set. Due to the current block satisfying a condition, the modified motion vector set is a modified version of a motion vector set associated with the current block.
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公开(公告)号：US11375217B2
公开(公告)日：2022-06-28
申请号：US17319994
申请日：2021-05-13
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N7/18 , H04N19/433 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/52 , H04N19/593 , H04N19/80 , H04N19/96 , H04N19/137 , H04N19/517 , H04N19/139 , H04N19/82 , H04N19/132 , H04N19/159 , H04N19/169 , H04N19/423 , H04N19/146 , H04N19/117 , H04N19/86
Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream representation of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.
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公开(公告)号：US11375211B2
公开(公告)日：2022-06-28
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：US11375188B2
公开(公告)日：2022-06-28
申请号：US17361837
申请日：2021-06-29
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/117 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/174 , H04N19/31 , H04N19/82
Abstract: Devices, systems and methods for digital video coding, which includes in-loop reshaping for video coding, are described. An exemplary method for video processing includes performing a conversion between a video comprising one or more video data units and a bitstream representation of the video, the bitstream representation conforming to a format rule that specifies an inclusion of side information indicative of default parameters for a coding mode that is applicable to a video block of the one or more video data units for which the coding mode is enabled, and the side information providing parameters for constructing the video block based on a representation of the video block in an original domain and a reshaped domain and/or a luma-dependent scaling of a chroma residue of a chroma video block.
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