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公开(公告)号：US20250047897A1
公开(公告)日：2025-02-06
申请号：US18806666
申请日：2024-08-15
Inventor： Wei CHEN , Xiaoyu XIU , Yi-Wen CHEN , Hong-Jheng JHU , Che-Wei KUO , Ning YAN , Xianglin WANG , Bing YU
IPC: H04N19/52 , H04N19/105 , H04N19/129 , H04N19/176 , H04N19/96
Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a first restricted neighbor area of a current block as a first scanning area and a second restricted neighbor area of the current block as a second scanning area, where the first restricted neighbor area and the second restricted neighbor area are separate. Furthermore, the decoder obtains one or more motion vector (MV) candidates from a plurality of non-adjacent neighbor blocks to the current block based on the first and second scanning areas. Moreover, the decoder obtains one or more control point motion vectors (CPMVs) for the current block based on the one or more MV candidates.
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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：US20250016348A1
公开(公告)日：2025-01-09
申请号：US18776609
申请日：2024-07-18
Inventor： Ning YAN , Yi-Wen CHEN , Xiaoyu XIU , Wei CHEN , Che-Wei KUO , Hong-Jheng JHU , Han GAO , Xianglin WANG , Bing YU
IPC: H04N19/44 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Implementations of the disclosure provide video processing apparatuses and methods for inter-prediction. A video processing method for the inter-prediction performed by a video decoder includes determining a reference index for a video block in a video frame of a video from a bitstream. The video processing method also includes generating a joint list including a plurality pairs of reference pictures based on a first reference list and a second reference list for the video block. The video processing method further includes reordering the plurality pairs of reference pictures in the joint list based on bilateral matching using one or more motion vectors of the video block to generate a reordered joint list. The video processing method further includes performing the inter-prediction on the video block based on the reordered joint list and the reference index.
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公开(公告)号：US20240373053A1
公开(公告)日：2024-11-07
申请号：US18767887
申请日：2024-07-09
Inventor： Che-Wei KUO , Xiaoyu XIU , Ning YAN , Hong-Jheng JHU , Yi-Wen CHEN , Wei CHEN , Han GAO , Xianglin WANG , Bing YU
IPC: H04N19/50 , H04N19/132 , H04N19/176 , H04N19/186 , H04N19/189 , H04N19/42
Abstract: A method for decoding video data. The method includes obtaining a video block from a bitstream; determining a region to derive a multiple linear regression (MLR) model; obtaining luma and chroma sample values in the region; deriving the MLR model using the luma and chroma sample values in the region; predicting each of chroma samples in the video block by applying the MLR model to corresponding luma samples for that chroma sample; and obtaining decoded video block using the predicted chroma samples.
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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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Patent Agency Ranking
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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7.发明公开公开(公告)号：US20240348785A1
公开(公告)日：2024-10-17
申请号：US18756092
申请日：2024-06-27
Inventor： Xiaoyu XIU , Yi-Wen CHEN , Wei CHEN , Han GAO , Che-Wei KUO , Hong-Jheng JHU , Ning YAN , Xianglin WANG , Bing YU
IPC: H04N19/13 , H04N19/174 , H04N19/70
CPC classification number: H04N19/13 , H04N19/174 , H04N19/70
Abstract: Methods for video decoding and encoding, apparatuses and non-transitory computer-readable storage media thereof are provided. In one method for video decoding, a binary arithmetic decoder may obtain, according to an adaptive weight, a multi-hypothesis probability for a binary symbol of a context model for the binary arithmetic decoder, where the multi-hypothesis probability indicates a probability of the binary symbol equaling to a binary value, and the binary symbol is from a plurality of binary symbols associated with the context model. Furthermore, the decoder may decode the binary symbol according to the multi-hypothesis probability.
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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：US20240333952A1
公开(公告)日：2024-10-03
申请号：US18741625
申请日：2024-06-12
Inventor： Hong-Jheng JHU , Xiaoyu XIU , Yi-Wen CHEN , Wei CHEN , Che-Wei KUO , Ning YAN , Han GAO , Xianglin WANG , Bing YU
IPC: H04N19/44 , H04N19/159 , H04N19/176
CPC classification number: H04N19/44 , H04N19/159 , H04N19/176
Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder obtains a signaled flag that indicates whether a template-based intra mode derivation (TIMD) mode is applied on a current video block; and in response to determining that the TIMD mode is applied on the current video block based on the signaled flag, the decoder derives an intra prediction mode from the TIMD mode based on different templates in a reconstruction area for the current video block, wherein the reconstruction area comprises reconstructed neighboring blocks for the current video block.
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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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