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公开(公告)号：US20250063206A1
公开(公告)日：2025-02-20
申请号：US18937272
申请日：2024-11-05
Inventor： Wenbin Yin , Kai Zhang , Li Zhang
IPC: H04N19/82 , H04N19/117 , H04N19/70 , H04N19/96
Abstract: A mechanism for processing video data is disclosed. A filter is applied to a video unit. The filter employs an extended tap for a first sample in the video unit and a spatial tap for a second sample in the video unit. A conversion is performed between a visual media data and a bitstream based on the video unit.
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公开(公告)号：US12219138B2
公开(公告)日：2025-02-04
申请号：US17457473
申请日：2021-12-03
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Yang Wang , Yue Wang
IPC: H04N19/122 , H04N19/176 , H04N19/18 , H04N19/625
Abstract: Devices, systems and methods for digital video coding, which includes using multiple transforms, are described. In a representative aspect, a method for video processing includes selecting, as part of a multiple transform selection (MTS) process, a common transform as both a vertical transform and a horizontal transform, and applying, as part of performing a conversion between a current block of a video and a bitstream representation of the video, the vertical transform and the horizontal transform to the current block.
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公开(公告)号：US20250039414A1
公开(公告)日：2025-01-30
申请号：US18915059
申请日：2024-10-14
Inventor： Zhipin DENG , Kai Zhang , Li Zhang
IPC: H04N19/186 , H04N19/105 , H04N19/176
Abstract: Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: determining, for a conversion between a video unit of a video and a bitstream of the video, a chroma block of the video unit based on a prediction mode of a luma block of the video unit; and performing the conversion based on the chroma block.
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公开(公告)号：US20250039407A1
公开(公告)日：2025-01-30
申请号：US18915992
申请日：2024-10-15
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/159 , H04N19/107 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/46
Abstract: Devices, systems, and methods for palette mode coding are described. An exemplary method for video processing includes determining, for a conversion between a block of a video region in a video and a bitstream representation of the video, a prediction mode based on one or more allowed prediction modes that include at least a palette mode of the block. An indication of usage of the palette mode is determined according to the prediction mode. The method also includes performing the conversion based on the one or more allowed prediction modes.
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公开(公告)号：US20250039401A1
公开(公告)日：2025-01-30
申请号：US18913890
申请日：2024-10-11
IPC: H04N19/154 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, a distortion value of the current video block based on a set of distortion metrics, the set of distortion metrics comprising at least one of: a first distortion metric determined according to a first machine learning model, a second distortion metric determined according to a second machine learning model, or a third distortion metric determined without using the first and second machine learning models; and performing the conversion based on the distortion value. In this way, a rate-distortion optimization process based on the distortion value can be improved, and thus the coding performance can be enhanced.
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Patent Agency Ranking
公开(公告)号：US20250039375A1
公开(公告)日：2025-01-30
申请号：US18914488
申请日：2024-10-14
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC: H04N19/119 , H04N19/176 , H04N19/70 , H04N19/96
Abstract: BV list construction process of IBC blocks under merge estimation region is described. An example method of video processing includes determining, for a conversion between a current video block of a video and a bitstream of the video, one or more block vector (BV) candidates for the current video block based on a merge estimation region (MER) covering the current video block; adding the one or more BV candidates to a BV list associated with the current video block; and performing the conversion based on the BV list.
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公开(公告)号：US20250030867A1
公开(公告)日：2025-01-23
申请号：US18905938
申请日：2024-10-03
Inventor： Zhipin Deng , Kai Zhang , Li Zhang
IPC: H04N19/137 , H04N19/105 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a video unit of a video and a bitstream of the video, a sign of a block vector difference of the video unit, wherein the sign is predictive coded and the video unit is coded with an intra block copy (IBC) mode; and performing the conversion based on the sign and a value of the block vector difference.
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公开(公告)号：US12200193B2
公开(公告)日：2025-01-14
申请号：US18176827
申请日：2023-03-01
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/30 , H04N19/517
Abstract: A video processing method includes deriving multiple temporal motion vector prediction (TMVP) candidates for a video block in a current picture based on multiple blocks associated with a second block in one or more pictures that are temporally co-located with the current picture, wherein the current picture is excluded from the one or more pictures, and the second block is temporally collocated with the video block, wherein the second block has a same size as the video block, and wherein a relative position of the second block to a top-left corner of a second picture of the one or more pictures is same as that of the video block to a top-left corner of the current picture; adding the multiple TMVP candidates to a motion candidate list associated with the video block; and performing a conversion between the video block and a bitstream.
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公开(公告)号：US20250016318A1
公开(公告)日：2025-01-09
申请号：US18891073
申请日：2024-09-20
Inventor： Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC: H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: Intra block copy with triangular partitions is described. One example method includes determining, for a conversion between a block of a video and a bitstream representation of the block, that at least one of intra block copy (IBC) mode, intra mode, inter mode and palette mode is applied to multiple sub-regions of the block, where the block is split into two or multiple triangular or wedgelet sub-regions; and performing the conversion based on the determination.
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公开(公告)号：US20240430482A1
公开(公告)日：2024-12-26
申请号：US18823504
申请日：2024-09-03
Inventor： Semih ESENLIK , Yaojun Wu , Zhaobin Zhang , Yue Li , Kai Zhang , Li Zhang
IPC: H04N19/61 , H04N19/124 , H04N19/132 , H04N19/42 , H04N19/463 , H04N19/91
Abstract: Embodiments of the present disclosure provide a solution for visual data processing. A method for visual data processing is proposed. The method comprises: obtaining, for a conversion between visual data and a bitstream of the visual data, an intermediate representation of the visual data, the intermediate representation being different from a quantized latent representation of the visual data and being generated based on at least one of the following: at least one parameter, at least a part of the quantized latent representation, a prediction of the at least a part of the quantized latent representation, or a difference between the prediction and the at least a part of the quantized latent representation; and performing, for the conversion, a synthesis transform on the intermediate representation, wherein the quantized latent representation is generated based on applying a first neural network to the visual data.
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