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公开(公告)号：US20230217021A1
公开(公告)日：2023-07-06
申请号：US18171049
申请日：2023-02-17
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Hsiao Chiang Chuang , Zhipin Deng
IPC: H04N19/117 , H04N19/82 , H04N19/176 , H04N19/70
CPC classification number: H04N19/117 , H04N19/82 , H04N19/176 , H04N19/70
Abstract: Devices, systems and methods for adaptive loop filtering are described. In an exemplary aspect, a method for video processing includes performing, for a current video block of a video, a filtering process that uses filter coefficients and comprises two or more operations with at least one intermediate result, applying a clipping operation to the at least one intermediate result, and performing, based on the at least one intermediate result, a conversion between the current video block and a bitstream representation of the video, wherein the at least one intermediate result is based on a weighted sum of the filter coefficients and differences between a current sample of the current video block and neighboring samples of the current sample.
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公开(公告)号：US20230199190A1
公开(公告)日：2023-06-22
申请号：US18172028
申请日：2023-02-21
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/82 , H04N19/117
CPC classification number: H04N19/132 , H04N19/105 , H04N19/176 , H04N19/82 , H04N19/117
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.
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公开(公告)号：US11683531B2
公开(公告)日：2023-06-20
申请号：US17696560
申请日：2022-03-16
Inventor： Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC: H04N19/82 , H04N19/186 , H04N19/70 , H04N19/117 , H04N19/174
CPC classification number: H04N19/82 , H04N19/117 , H04N19/174 , H04N19/186 , H04N19/70
Abstract: Methods, systems and devices for signaling the usage of adaptive loop filtering in image and video coding are described. An example method of video processing includes determining, for a conversion between a current region of a video and a bitstream representation of the video, whether a luma adaptive loop filter is used during the conversion and whether luma adaptive loop filter coefficients are included in the bitstream representation, wherein a single syntax element in the bitstream representation is indicative of use of the luma adaptive loop filter and signaling of the luma adaptive loop filter coefficients, and performing, based on the determining, the conversion.
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公开(公告)号：US20230188710A1
公开(公告)日：2023-06-15
申请号：US18165017
申请日：2023-02-06
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/80 , H04N19/52 , H04N19/523 , H04N19/517
CPC classification number: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/80 , H04N19/52 , H04N19/523 , H04N19/517
Abstract: A method of video processing is provided to include: deciding a coding mode used for representing a current video block of a video in a coded representation of the video; and coding the current video block into the coded representation according to the coding mode, wherein use of alternative half-pel accuracy filters in addition to a default half-pel accuracy filter for representing motion information is disabled for the current video block due to use of the coding mode.
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公开(公告)号：US11677941B2
公开(公告)日：2023-06-13
申请号：US17115462
申请日：2020-12-08
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/119 , H04N19/52 , H04N19/139 , H04N19/105 , H04N19/176
CPC classification number: H04N19/119 , H04N19/105 , H04N19/139 , H04N19/176 , H04N19/52
Abstract: Devices, systems and methods for digital video coding, which includes using default motion candidates for video coding, are described. An exemplary 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 motion candidates for a geometry partition mode using one or more pairwise average candidates that are obtained by averaging a pair of candidates in a motion candidate list for the current block. The geometry partition mode includes partitioning the current block into multiple partitions. The method also includes performing the conversion based on the determining.
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Patent Agency Ranking
公开(公告)号：US11665343B2
公开(公告)日：2023-05-30
申请号：US17835647
申请日：2022-06-08
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Ye-kui Wang
IPC: H04N19/176 , H04N19/70 , H04N19/117 , H04N19/174 , H04N19/186 , H04N19/80
CPC classification number: H04N19/117 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/80
Abstract: An example method of video processing includes applying, in a conversion between a video comprising multiple components and a bitstream representation of the video, a deblocking filter to video blocks of the multiple components. A deblocking filter strength for the deblocking filter of each of the multiple components is determined according to a rule that specifies to use a different manner for determining the deblocking filter strength for the video blocks of each of the multiple components.
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公开(公告)号：US11665341B2
公开(公告)日：2023-05-30
申请号：US17585704
申请日：2022-01-27
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/132
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.
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公开(公告)号：US20230164313A1
公开(公告)日：2023-05-25
申请号：US17982038
申请日：2022-11-07
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Zhipin Deng , Yue Wang
IPC: H04N19/117 , H04N19/186 , H04N19/96
CPC classification number: H04N19/117 , H04N19/96 , H04N19/186
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：US11659185B2
公开(公告)日：2023-05-23
申请号：US17479360
申请日：2021-09-20
Inventor： Zhipin Deng , Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/132 , G06F7/78 , H04N19/176 , H04N19/105 , H04N19/159 , G06F17/16
CPC classification number: H04N19/132 , G06F7/78 , G06F17/16 , H04N19/105 , H04N19/159 , H04N19/176
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 performing a conversion between a current video block of a video and a bitstream representation of the current video block 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 followed by an upsampling operation, where the upsampling operation is performed, in both a vertical direction and a horizontal direction in a fixed order, on samples obtained from the matrix vector multiplication operation.
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公开(公告)号：US11659167B2
公开(公告)日：2023-05-23
申请号：US17727542
申请日：2022-04-22
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Jizheng Xu , Yue Wang
IPC: H04N19/70 , H04N19/105 , H04N19/132 , H04N19/176
CPC classification number: H04N19/105 , H04N19/132 , H04N19/176 , H04N19/70
Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a coded representation of the video, that a resolution of a current picture containing the current block and a reference picture used for the conversion are different, and performing the conversion based on the determining such that predicted values of a group of samples of the current block are generated using a horizontal or a vertical interpolation filter.
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