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公开(公告)号：US20250126269A1
公开(公告)日：2025-04-17
申请号：US18991081
申请日：2024-12-20
Inventor： Na ZHANG , Jizheng XU , Kai ZHANG , Mehdi SALEHIFAR , Li ZHANG
IPC: H04N19/139 , H04N19/103 , H04N19/147 , H04N19/176 , H04N19/184
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 the current video block and a bitstream of the video, a target number for a set of motion candidates, the target number being smaller than or equal to an upper limit value; determining, based on the target number and a fast rate distortion optimization (RDO) process, the set of motion candidates from a plurality of motion candidates for an intra block copy (IBC) based mode for coding the current video block; and performing the conversion based on the set of motion candidates.
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公开(公告)号：US20240380907A1
公开(公告)日：2024-11-14
申请号：US18763952
申请日：2024-07-03
Applicant: Bytedance Inc.
Inventor： Jizheng XU , Li ZHANG
IPC: H04N19/423 , H04N19/105 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/436 , H04N19/463
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a video unit of a video and a bitstream of the video unit, a first size parameter of an intra block copy (IBC) buffer or an IBC reference area based on a second size parameter of a region associated with the video unit, the video unit being applied with an IBC mode; and performing the conversion based on the IBC buffer or the IBC reference area.
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公开(公告)号：US20240340413A1
公开(公告)日：2024-10-10
申请号：US18749455
申请日：2024-06-20
Applicant: Bytedance Inc.
Inventor： Jizheng XU , Li ZHANG
IPC: H04N19/11 , H04N19/105 , H04N19/132 , H04N19/169 , H04N19/172 , H04N19/176 , H04N19/463
CPC classification number: H04N19/11 , H04N19/105 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/1883 , H04N19/463
Abstract: Embodiments of the disclosure provide a solution for video processing. A method for video processing is proposed. The method includes: determining, during a conversion between a video unit of a video and a bitstream of the video, a first reference area for intra block copy (IBC) of the video unit based on a second reference area for intra template matching, the video unit being applied with an IBC mode; determining a block vector for the video unit in the first reference area; and performing the conversion based on the block vector.
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公开(公告)号：US20240259555A1
公开(公告)日：2024-08-01
申请号：US18622810
申请日：2024-03-29
Inventor： Na ZHANG , Kai ZHANG , Li ZHANG , Jizheng XU
IPC: H04N19/105 , H04N19/132 , H04N19/136 , H04N19/157 , H04N19/176
CPC classification number: H04N19/105 , H04N19/132 , H04N19/136 , H04N19/157 , 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, during a conversion between a target video block of a video and a bitstream of the video, whether a block vector (BV) candidate of the target video block is valid; in accordance with a determination that the BV candidate is valid, adding the BV candidate in an intra block copy (IBC) candidate list; and performing the conversion based on the IBC candidate list.
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公开(公告)号：US20230007261A1
公开(公告)日：2023-01-05
申请号：US17470095
申请日：2021-09-09
Inventor： Weijia ZHU , Jizheng XU , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG
IPC: H04N19/132 , H04N19/105 , H04N19/159 , H04N19/70 , H04N19/46 , H04N19/186 , H04N19/176
Abstract: A method of visual media processing video, includes determining that palette mode is to be used for processing a first portion of a video block and intra block copy (IBC) mode is to be used for processing a second portion of the video block, and performing further processing of the first portion of the video block using the palette mode and the second portion of the video using the IBC mode, wherein indications of the first portion of the video block processed using the palette mode and indications of the second portion of the video block processed using the IBC mode are included in a palette index identifying the first portion of the video block and the second portion of the video block.
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Patent Agency Ranking
公开(公告)号：US20220368898A1
公开(公告)日：2022-11-17
申请号：US17852934
申请日：2022-06-29
Applicant: Bytedance Inc.
Inventor： Weijia ZHU , Li ZHANG , Jizheng XU , Kai ZHANG , Ye-kui WANG
IPC: H04N19/117 , H04N19/82 , H04N19/186 , H04N19/176
Abstract: A method of video processing, including performing a conversion between a video unit of a video and a bitstream representation of the video, wherein the conversion includes applying a deblocking filter to at least some samples on boundaries of the video unit, wherein deblocking quantization parameter (QP) values used in the deblocking filter are determined according to a rule, and wherein the rule specifies that whether the deblocking QP values are equal to dequantization QP values for the video unit is based on whether an adaptive color transform (ACT) mode is applied to the video unit.
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公开(公告)号：US20220321882A1
公开(公告)日：2022-10-06
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: H04N19/117 , H04N19/80 , H04N19/186 , H04N19/176 , H04N19/174 , H04N19/70
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：US20220272353A1
公开(公告)日：2022-08-25
申请号：US17713063
申请日：2022-04-04
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/137 , H04N19/132 , H04N19/186 , H04N19/176 , H04N19/70 , H04N19/46
Abstract: An example method of video processing includes performing a conversion between a block of a chroma component of a video and a bitstream representation of the video using a partitioning mode coding tool in which a final prediction of the chroma block is determined by blending predictions of the chroma block using weights that are based on the partitions. During the conversion, the weights are determined based on a type of chroma sample locations in the chroma component of the block.
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公开(公告)号：US20220272330A1
公开(公告)日：2022-08-25
申请号：US17727486
申请日：2022-04-22
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/11 , H04N19/186 , H04N19/176 , H04N19/52 , H04N19/132
Abstract: A method of video processing includes making a determination, fora conversion between a current video block of a video and a coded representation of the video, of an affine merge candidate selectively according to a rule; and performing the conversion according to the determination. The rule specifies how the affine merge candidate is calculated without use of a log 2(X) operation where X is equal to or less than zero. The affine merge candidate is a motion candidate derived from neighboring affine coded video blocks.
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公开(公告)号：US20220256197A1
公开(公告)日：2022-08-11
申请号：US17718880
申请日：2022-04-12
Inventor： Kai ZHANG , Li ZHANG , Hongbin LIU , Zhipin DENG , Jizheng XU , Yue WANG
IPC: H04N19/70 , H04N19/159 , H04N19/169 , H04N19/174
Abstract: An example method of video processing includes performing a conversion between a video including a video picture including one or more video units and a bitstream representation of the video. The bitstream representation conforms to a format rule that specifies that a first syntax element is included in a header of the video picture indicating allowed prediction types of at least some of the one or more video units in the video picture.
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