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公开(公告)号：US11792413B2
公开(公告)日：2023-10-17
申请号：US17857924
申请日：2022-07-05
Inventor： Weijia Zhu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/196 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/105 , H04N19/186 , H04N11/04
CPC classification number: H04N19/196 , H04N11/044 , H04N19/105 , H04N19/12 , H04N19/126 , H04N19/176 , H04N19/186
Abstract: Methods, systems and devices for implementing an adaptive color transform (ACT) during image/video encoding and decoding, including: determining, for a conversion between a video comprising a block and a bitstream of the video, that a size of the block is greater than a maximum allowed size for an ACT mode, and performing, based on the determining, the conversion, wherein, in response to the size of the block being greater than the maximum allowed size for the ACT mode, the block is partitioned into multiple sub-blocks, and wherein each of the multiple sub-blocks share a same prediction mode, and the ACT mode is enabled at a sub-block level.
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公开(公告)号：US11785253B2
公开(公告)日：2023-10-10
申请号：US17239615
申请日：2021-04-25
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/00 , H04N19/583 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/513 , H04N19/139 , H04N19/196
CPC classification number: H04N19/583 , H04N19/105 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/513 , H04N19/521
Abstract: The present disclosure relates to overlapped block motion compensation with derived motion from neighbors. A method for video processing, comprising: determining, during a conversion between a current block of visual media data and a corresponding coded representation of the visual media data, at least one neighboring block for the current block; determining motion information of the at least one neighboring block; and performing Overlapped Block Motion Compensation (OBMC) for the current block based on the motion information of the at least one neighboring block, wherein the OBMC includes using an intermediate prediction values of one sub-block of the current block and a prediction values of at least one neighboring sub-block to generating a final prediction values of the sub-block.
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公开(公告)号：US20230319316A1
公开(公告)日：2023-10-05
申请号：US18329415
申请日：2023-06-05
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/82 , H04N19/117 , H04N19/174 , H04N19/176
CPC classification number: H04N19/82 , H04N19/117 , H04N19/174 , H04N19/176
Abstract: A method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video using a coding tool that accesses samples outside of the current block, that neighboring samples used for the conversion are unavailable. Samples that are located across a boundary of a video unit of the video are considered as unavailable samples. The method also includes performing, based on the determining, the conversion by padding samples in place of the neighboring samples that are unavailable. The padding samples are determined using samples that are restricted to be within a current processing unit associated with the current block.
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公开(公告)号：US11778181B2
公开(公告)日：2023-10-03
申请号：US17723175
申请日：2022-04-18
Inventor： Kai Zhang , Zhipin Deng , Hongbin Liu , Li Zhang , Jizheng Xu
IPC: H04N19/00 , H04N19/119 , H04N19/132 , H04N19/176 , H04N19/70 , H04N19/117 , H04N19/186 , H04N19/46 , H04N19/82
CPC classification number: H04N19/119 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/70 , H04N19/82
Abstract: An example method of video processing includes determining, for a conversion between a block of a first sub-picture of a video and a bitstream representation of the video, whether to apply a deblocking process across an edge between the block and a neighboring block of a second sub-picture based on whether a loop filtering process is allowed across subpicture boundaries. The method also includes performing the conversion based on the determining.
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公开(公告)号：US11778176B2
公开(公告)日：2023-10-03
申请号：US17947909
申请日：2022-09-19
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu
IPC: H04N19/11 , H04N19/159 , H04N19/593 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/52
CPC classification number: H04N19/11 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/593 , H04N19/52
Abstract: Methods and apparatus for video processing are described. One example method includes determining, for a conversion between a video block of a video and a bitstream of the video, that the video block satisfies a condition. The video block is coded in the bitstream using an intra block copy mode. The method further includes performing the conversion based on the determining. Here, due to the video block satisfying the condition, a portion of an intra block copy buffer is reset during the conversion.
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Patent Agency Ranking
公开(公告)号：US20230308659A1
公开(公告)日：2023-09-28
申请号：US18328548
申请日：2023-06-02
Inventor： Jizheng Xu , Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Yue Wang
IPC: H04N19/157 , H04N19/124 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/30 , H04N19/60
CPC classification number: H04N19/157 , H04N19/124 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/30 , H04N19/60
Abstract: Methods, systems, and devices for high-precision transform and quantization for image and video coding are described. A example method of video processing includes determining, for a conversion between a video comprising a current block and a bitstream representation of the video, that the conversion comprises an application of a transform to the current block, and performing, based on the determining, the conversion. A bit-shifting operation of a scaling process for transform coefficients associated with the transform is based on whether the current block is coded with a block-based differential pulse code modulation (BDPCM) mode.
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公开(公告)号：US20230308641A1
公开(公告)日：2023-09-28
申请号：US18312732
申请日：2023-05-05
Inventor： Kai Zhang , Li Zhang , Hongbin Liu
IPC: H04N19/105 , H04N19/137 , H04N19/132 , H04N19/46 , H04N19/176
CPC classification number: H04N19/105 , H04N19/137 , H04N19/132 , H04N19/46 , H04N19/176
Abstract: An example method of video processing includes determining, for a conversion between a current block of a current picture of a video and a bitstream of the video, whether to disable a coding tool for the current block; and performing the conversion based on the determining, wherein the coding tool is disabled when a dimension of a reference picture of one or more reference pictures of the current block is different from a dimension of the current picture, or a dimension of a scaling window in a reference picture of one or more reference pictures of the current block is different from a dimension of a scaling window in the current picture.
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公开(公告)号：US20230300337A1
公开(公告)日：2023-09-21
申请号：US18322461
申请日：2023-05-23
Inventor： Zhipin Deng , Li Zhang , Hongbin Liu , Kai Zhang , Jizheng Xu , Yang Wang , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/137 , H04N19/176 , H04N19/70
CPC classification number: H04N19/132 , H04N19/105 , H04N19/137 , H04N19/176 , H04N19/70
Abstract: A method of processing video data is described. The method includes performing a conversion between a current video block of a video and a bitstream of the video. A geometric partitioning mode index for the current video block is coded in the bitstream and a binarization of the geometric partitioning mode index is performed according to a rule. The geometric partitioning mode index specifies a geometric splitting shape of a geometric partitioning mode applied to the current video block. The rule specifies that the geometric partitioning mode index is coded with a fixed-length binarization.
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公开(公告)号：US11765394B2
公开(公告)日：2023-09-19
申请号：US17859733
申请日：2022-07-07
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Li Zhang , Kai Zhang
IPC: H04N19/46 , H04N19/82 , H04N19/187 , H04N19/169 , H04N19/70 , H04N19/91 , H04N19/159 , H04N19/174 , H04N19/184 , H04N19/105 , H04N19/44 , H04N19/117
CPC classification number: H04N19/82 , H04N19/105 , H04N19/159 , H04N19/174 , H04N19/184 , H04N19/187 , H04N19/188 , H04N19/44 , H04N19/46 , H04N19/70 , H04N19/91 , H04N19/117
Abstract: Methods, devices and systems for video coding and encoding, which include constraints, restrictions and signaling for subpictures, slices, and tiles, are described. One example method of video processing includes performing a conversion between a video and a bitstream of the video, wherein the bitstream comprises one or more access units according to a format rule, and wherein the format rule specifies an order in which a first message and a second message that apply to an operation point (OP) are present within an access unit (AU) such that the first message precedes the second message in a decoding order.
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公开(公告)号：US11765345B2
公开(公告)日：2023-09-19
申请号：US17205965
申请日：2021-03-18
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/513 , H04N19/11 , H04N19/105 , H04N19/129 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/132 , H04N19/82
CPC classification number: H04N19/11 , H04N19/105 , H04N19/129 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/513 , H04N19/82
Abstract: Devices, systems and methods for digital video processing, which includes multiple prediction blocks for one intra-coded block, are described. In a representative aspect, a method for video processing includes generating a final prediction block for a conversion between a current block of visual media data and a bitstream representation of the current block and performing the conversion based on the final prediction block. At least a portion of the final prediction block is generated based on a combination of a first prediction block and a second prediction block that are based on reconstructed samples from an image segment that comprises the current block.
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