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公开(公告)号：US20250024084A1
公开(公告)日：2025-01-16
申请号：US18778913
申请日：2024-07-19
Inventor： Xiaoyu XIU , Yi-wen CHEN , Tsung-Chuan MA , Hong-Jheng JHU , Wei CHEN , Xianglin WANG , Bing YU
IPC: H04N19/70 , H04N19/169 , H04N19/172
Abstract: A method for video coding is provided. The method includes: setting, by an encoder, a first syntax element in a picture parameter set (PPS) specifying whether a picture corresponding to the PPS comprises more than one network abstraction layer (NAL) units and whether the more than one NAL units have a same NAL unit type; setting, by the encoder, a second syntax element in a picture header (PH) specifying whether the picture corresponding to the PH is an intra random access point (IRAP) picture or a gradual decoding refresh (GDR) picture, where a value of the second syntax element is set based on a value of the first syntax element; and forming, by the encoder, a bitstream with the first syntax element and the second syntax element.
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公开(公告)号：US20250016376A1
公开(公告)日：2025-01-09
申请号：US18830401
申请日：2024-09-10
Inventor： Hong-Jheng JHU , Yi-Wen CHEN , Xiaoyu XIU , Tsung-Chuan MA , Wei CHEN , Xianglin WANG , Bing YU
IPC: H04N19/70 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/44
Abstract: Methods, devices, and storage mediums are provided for encoding video signals. An encoder determines at least one versatile video coding (VVC) syntax flag. The encoder determines, in response to a syntax element indicating that inter prediction is allowed, inter related syntax elements. The encoder obtains a first reference picture I(0) and a second reference picture I(1) associated with a video block. The encoder obtains first prediction samples I(0)(i,j) of the video block from a reference block in the first reference picture I(0). The encoder obtains second prediction samples I(1)(i,j) of the video block from a reference block in the second reference picture I(1). The encoder obtains bi-prediction samples based on the at least one VVC syntax flag, the inter related syntax elements, the first prediction samples I(0)(i,j), and the second prediction samples I(1)(i,j).
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公开(公告)号：US20240373069A1
公开(公告)日：2024-11-07
申请号：US18776227
申请日：2024-07-17
Inventor： Xiaoyu XIU , Yi-wen CHEN , Tsung-Chuan MA , Hong-Jheng JHU , Wei CHEN , Xianglin WANG , Bing YU
IPC: H04N19/70 , H04N19/169 , H04N19/172
Abstract: A method for video coding is provided. The method includes: setting, by an encoder, a first syntax element in a picture parameter set (PPS) specifying whether a picture corresponding to the PPS comprises more than one network abstraction layer (NAL) units and whether the more than one NAL units have a same NAL unit type; setting, by the encoder, a second syntax element in a picture header (PH) specifying whether the picture corresponding to the PH is an intra random access point (IRAP) picture or a gradual decoding refresh (GDR) picture, wherein a value of the first syntax element is set based on a value of the second syntax element being 1; and forming, by the encoder, a bitstream with the first syntax element and the second syntax element.
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公开(公告)号：US20240364885A1
公开(公告)日：2024-10-31
申请号：US18769272
申请日：2024-07-10
Inventor： Xiaoyu XIU , Yi-Wen CHEN , Tsung-Chuan MA , Hong-Jheng JHU , Wei CHEN , Che-Wei KUO , Xianglin WANG , Bing YU
IPC: H04N19/12 , H04N19/124 , H04N19/132 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/60 , H04N19/70
CPC classification number: H04N19/12 , H04N19/124 , H04N19/132 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/60 , H04N19/70
Abstract: An electronic apparatus performs a method of coding video data. The method comprises: receiving, from the bitstream, syntax elements associated with a coding unit, wherein the syntax elements include a first coded block flag (CBF) for residual samples of a first chroma component, a second CBF for residual samples of a second chroma component, and a third syntax element indicating whether adaptive color transform (ACT) is applied to the coding unit; determining whether to perform the chroma residual scaling to the residual samples of the chroma components according to the first CBF, the second CBF, and the third syntax element; in accordance with a determination to perform the chroma residual scaling to the residual samples of the first and second chroma components, scaling the residual samples of the at least one of the first and second chroma components based on a corresponding scaling parameter.
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公开(公告)号：US20240348792A1
公开(公告)日：2024-10-17
申请号：US18755670
申请日：2024-06-27
Inventor： Xiaoyu XIU , Yi-Wen CHEN , Xianglin WANG , Shuiming YE , Tsung-Chuan MA , Hong-Jheng JHU
IPC: H04N19/137 , H04N19/105 , H04N19/132 , H04N19/176
CPC classification number: H04N19/137 , H04N19/105 , H04N19/132 , H04N19/176
Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for encoding a video signal. A method may include obtain a first reference picture and a second reference picture associated with a video block, wherein the first reference picture is before a current picture and the second reference picture is after the current picture in display order; obtain first prediction samples of the video block from the first reference picture; obtain second prediction samples of the video block from the second reference picture; obtain padded prediction samples; obtain horizontal and vertical gradient values of the first prediction samples and the second prediction samples based on the padded prediction samples; obtain motion refinements for samples in the video block based on the horizontal and vertical gradient values; and obtain bi-prediction samples of the video block based on the motion refinements.
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Patent Agency Ranking
公开(公告)号：US20240333963A1
公开(公告)日：2024-10-03
申请号：US18737821
申请日：2024-06-07
Inventor： Xiaoyu XIU , Wei CHEN , Yi-Wen CHEN , Tsung-Chuan MA , Hong-Jheng JHU , Xianglin WANG , Bing YU
IPC: H04N19/52 , H04N19/132 , H04N19/139 , H04N19/169 , H04N19/17 , H04N19/70
CPC classification number: H04N19/52 , H04N19/132 , H04N19/139 , H04N19/17 , H04N19/1887 , H04N19/70
Abstract: An electronic apparatus performs a method of decoding video data. The method comprises: receiving, from a bitstream, a first control flag that indicates merge mode with motion vector difference (MMVD) is enabled for one or more coding units in a video sequence; receiving a first syntax from the video data that identifies a set of motion vector difference (MVD) offsets from a plurality sets of MVD offsets; receiving, a second control flag corresponding to a respective coding unit of the one or more coding units, which indicates the MMVD is applied to the coding unit; receiving a second syntax that selects an MVD offset from the identified set of MVD offsets, and a third syntax that selects an MVD direction; forming MVD based on the selected MVD offset and MVD direction; and reconstructing the coding unit by applying the formed MVD to generate motion vectors to the coding unit.
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公开(公告)号：US20240333951A1
公开(公告)日：2024-10-03
申请号：US18737417
申请日：2024-06-07
Inventor： Xianglin WANG , Yi-Wen CHEN , Xiaoyu XIU , Tsung-Chuan MA , Hong-Jheng JHU
IPC: H04N19/44 , H04N19/169 , H04N19/176 , H04N19/70
CPC classification number: H04N19/44 , H04N19/176 , H04N19/188 , H04N19/1883 , H04N19/70
Abstract: A computing device performs a method of decoding video data by receiving a bitstream corresponding to video data encoding one or more pictures, wherein the one or more pictures are recursively partitioned into a plurality of groups at different partition levels; determining a first syntax element that corresponds to a first group of the plurality of groups; in accordance with a determination that the first syntax element has a first value: decoding the first group in a first mode and in accordance with a determination that the first syntax element has a second value: determining a respective second syntax element for each of one or more second groups within the first groups, wherein the one or more second groups are at a second partition level below the first partition level and decoding each of the one or more second groups in accordance with a value of the respective second syntax element.
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公开(公告)号：US20240297985A1
公开(公告)日：2024-09-05
申请号：US18665512
申请日：2024-05-15
Inventor： Yi-Wen CHEN , Xiaoyu XIU , Xianglin WANG , Tsung-Chuan MA
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/513
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/513
Abstract: A method for video encoding is provided. The method includes obtaining, by an encoder, a plurality of blocks from a video picture, wherein each of the plurality of blocks is to be encoded by an intra prediction mode or an inter prediction mode; in response to a first pre-defined condition being satisfied, determining, by the encoder, that a current block in the plurality of blocks is eligible for an application of Decoder-side Motion Vector Refinement (DMVR); in response to the current block being eligible for both applications of DMVR and Bi-Directional Optical Flow (BDOF), determining, by the encoder, whether a pre-defined criterion based on mode information of the current block is satisfied; avoiding, by the encoder in response to the pre-defined criterion being satisfied, applying BDOF to a subblock in the current block; and outputting, by the encoder by a bitstream, prediction mode information of the current block.
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公开(公告)号：US20240283933A1
公开(公告)日：2024-08-22
申请号：US18636552
申请日：2024-04-16
Inventor： Hong-Jheng JHU , Xiaoyu XIU , Xianglin WANG , Yi-Wen CHEN , Tsung-Chuan MA , Bing YU
IPC: H04N19/126 , H04N19/159 , H04N19/186 , H04N19/196
CPC classification number: H04N19/126 , H04N19/159 , H04N19/186 , H04N19/196
Abstract: A method for video encoding is provided. The method may be applied in an encoder and includes: determining, for a first coding block, a quantization parameter and a quantized level; deriving a scale value by scaling the quantization parameter by a scale factor, determining a plurality of parameters associated with a coding unit (CU); obtaining a plurality of bit-shifts by bit-shifting the plurality of parameters; and obtaining a plurality of coefficients associated with the CU based on the quantized level, the scale value, and the plurality of bit-shifts.
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公开(公告)号：US20240195998A1
公开(公告)日：2024-06-13
申请号：US18438398
申请日：2024-02-09
Inventor： Yi-Wen CHEN , Xiaoyu XIU , Xianglin WANG , Tsung-Chuan MA
IPC: H04N19/44 , H04N19/105 , H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/593
CPC classification number: H04N19/44 , H04N19/105 , H04N19/119 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/46 , H04N19/593
Abstract: A method of video coding comprises independently generating a respective intra prediction for each of a plurality of corresponding sub-partitions. Each respective intra prediction is generated using a plurality of reference samples from a current coding block. Illustratively, no reconstructed sample from a first sub-partition of the plurality of corresponding sub-partitions is used to generate a respective intra prediction for any other sub-partition of the plurality of corresponding sub-partitions, and each of the plurality of corresponding sub-partitions has a width less than or equal to 2.
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