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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：US20250047886A1
公开(公告)日：2025-02-06
申请号：US18914404
申请日：2024-10-14
Inventor： Che-Wei KUO , Xiaoyu XIU , Ning YAN , Hong-Jheng JHU , Wei CHEN , Han GAO , Xianglin WANG , Bing YU
IPC: H04N19/50 , H04N19/176 , H04N19/186
Abstract: A method for decoding video data, comprising: obtaining internal luma sample values of a video block from a bitstream, obtaining neighboring luma and chroma sample values of the video block; calculating first filtered values based on the neighboring luma sample values for each direction of a number of directions, wherein each of the first filtered values is calculated based on sample differences between luma sample values in the direction, accumulating the first filtered values for each direction of number of directions respectively to obtain accumulated values; determining a direction of number of directions for which an accumulated value is the largest one of the accumulated values among the number of directions, applying the determined direction as a direction for predicting internal chroma sample values of video block based on the internal luma sample values of the video block, and obtaining decoded video block using the predicted internal chroma sample values.
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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：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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Patent Agency Ranking
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：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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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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10.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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