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公开(公告)号：US20250030899A1
公开(公告)日：2025-01-23
申请号：US18899174
申请日：2024-09-27
Inventor： Ning YAN , Yi-Wen CHEN , Xiaoyu XIU , Che-Wei KUO , Hong-Jheng JHU , Wei CHEN , Han GAO , Xianglin WANG , Bing YU
IPC: H04N19/82 , H04N19/117 , H04N19/176 , H04N19/70
Abstract: A method for video encoding, a method for video decoding, apparatuses and non-transitory computer-readable storage media thereof are provided. In the method for video decoding, the decoder may obtain one or more filtering parameters, wherein the one or more filtering parameters are from a filtering parameter set comprising a number of similar blocks, a search range, and a window size; obtain, based on the one or more filtering parameters, one or more similar pixels for a first pixel that has been filtered in a picture and the first pixel; and obtain an original pixel associated with the first pixel based on the one or more similar pixels.
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公开(公告)号：US20250016377A1
公开(公告)日：2025-01-09
申请号：US18886724
申请日：2024-09-16
Inventor： Yi-Wen CHEN , Ning YAN , Xiaoyu XIU , Che-Wei KUO , Hong-Jheng JHU , Wei CHEN , Xianglin WANG , Bing YU
IPC: H04N19/70 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/60
Abstract: Methods for video coding and compression, apparatuses and non-transitory storage media are provided. In one method of video decoding, a decoder may obtain a syntax element that indicates a predefined geometric operation and an encoded video bitstream. Additionally, the decoder may reconstruct a modified picture based on the encoded video bitstream. Furthermore, the decoder may obtain an original picture by performing an inverse geometry operation based on the syntax element. Further, the decoder may obtain luma samples and chroma samples of the original picture.
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公开(公告)号：US20250016347A1
公开(公告)日：2025-01-09
申请号：US18776204
申请日：2024-07-17
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 , H04N19/105 , H04N19/176
Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder obtains a first flag that indicates whether a template-based intra mode derivation (TIMD) mode is applied to a current video block; and in response to determining that the TIMD mode is applied to the current video block based on the first flag, the decoder obtains a set of candidate list for the TIMD mode, where the set of candidate list includes a set of reference line list or a set of template candidate list.
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公开(公告)号：US20250016346A1
公开(公告)日：2025-01-09
申请号：US18774854
申请日：2024-07-16
Inventor： Yi-Wen CHEN , Xiaoyu XIU , Che-Wei KUO , Hong-Jheng JHU , Wei CHEN , Ning YAN , Xianglin WANG , Bing YU
IPC: H04N19/44 , H04N19/105 , H04N19/159 , H04N19/176
Abstract: Methods, apparatuses, and non-transitory computer-readable storage media are provided for video coding. In one method, a decoder derives a first and a second reference pictures for a current coding block; the decoder derives a first and a second predictor samples based on a motion vector associated with the first reference picture using a motion compensation process from the first reference picture; the decoder determines whether the first and the second predictor samples are out-of-boundary (OOB), and in response to determining the first or the second predictor sample is OOB, the decoder replaces the first or the second predictor sample that is OOB with a first or a second alternative predictor sample; and the decoder generates the final prediction sample by averaging sample values of the first predictor sample and the second predictor sample.
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公开(公告)号：US20250016331A1
公开(公告)日：2025-01-09
申请号：US18777438
申请日：2024-07-18
Inventor： Han GAO , Xiaoyu XIU , Yi-Wen CHEN , Wei CHEN , Hong-Jheng JHU , Ning YAN , Che-Wei KUO , Xianglin WANG , Bing YU
IPC: H04N19/159 , H04N19/119 , H04N19/70
Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a first geometric partition mode (GPM) part and a second GPM part for a coding unit (CU). The decoder disables template matching (TM) based GPM split modes reordering for multiple GPM split modes that are applied to the CU in response to determining that the first GPM part or the second GPM part is predicted with intra prediction. Furthermore, the decoder enables the TM based GPM split modes reordering for the multiple GPM split modes in response to determining that both the first GPM part and the second GPM part are predicted with inter prediction.
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公开(公告)号：US20250016304A1
公开(公告)日：2025-01-09
申请号：US18773540
申请日：2024-07-15
Inventor： Wei CHEN , Xiaoyu XIU , Yi-Wen CHEN , Hong-Jheng JHU , Che-Wei KUO , Ning YAN , Xianglin WANG , Bing YU
IPC: H04N19/105 , H04N19/119 , H04N19/139 , H04N19/167 , H04N19/176 , H04N19/423 , H04N19/54
Abstract: Methods for video decoding and encoding, apparatuses and non-transitory storage media are provided. In one decoding method, the decoder obtains a plurality of sub-blocks by dividing an affine-coded block. Moreover, the decoder obtains, based on a plurality of control point motion vectors (CPMVs) of the affine-coded block, a plurality of sub-CPMVs of one sub-block from the plurality of sub-blocks, where the one sub-block has a size of a minimum affine block. Furthermore, the decoder stores the plurality of sub-CPMVs of the one sub-block as motion information of the one sub-block.
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公开(公告)号：US20240397081A1
公开(公告)日：2024-11-28
申请号：US18674729
申请日：2024-05-24
Inventor： Yi-Wen CHEN , Xiaoyu XIU , Che-Wei KUO , Hong-Jheng JHU , Wei CHEN , Ning YAN , Xianglin WANG , Bing YU
IPC: H04N19/55 , H04N19/105 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/172 , H04N19/176 , H04N19/52 , H04N19/70
Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder derives a reference picture for a current coding block; the decoder derives a predictor sample based on a motion vector associated with the reference picture using a motion compensation process from the reference picture; the decoder determines whether the predictor sample is located outside the reference picture by a certain margin; and the decoder determines the predictor sample is out-of-boundary (OOB) in response to determining the predictor sample is located outside the reference picture by a certain margin.
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公开(公告)号：US20240298037A1
公开(公告)日：2024-09-05
申请号：US18658178
申请日：2024-05-08
Inventor： Che-Wei KUO , Xiaoyu XIU , Wei CHEN , Xianglin WANG , Yi-Wen CHEN , Hong-Jheng JHU , Ning YAN , Bing YU
IPC: H04N19/82 , H04N19/117 , H04N19/147 , H04N19/176
CPC classification number: H04N19/82 , H04N19/117 , H04N19/147 , H04N19/176
Abstract: A method for Cross-Component Sample Adaptive Offset (CCSAO) process is provided. The method comprises: determining a first rate-distortion (RD) cost for a block using a first classifier, wherein the first classifier having a first category number in a first value range, and wherein the first RD cost is the least among RD costs associated with classifiers having a category number in the first value range; determining a second RD cost for the block using a second classifier, wherein the second classifier having a second category number in a second value range, and wherein the second RD cost is the least among RD costs associated with classifiers having a category number in the second value range; and applying the first classifier as a classifier for the CCSAO process in response to determining the first RD cost is less than the second RD cost.
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公开(公告)号：US20240298009A1
公开(公告)日：2024-09-05
申请号：US18658783
申请日：2024-05-08
Inventor： Xiaoyu XIU , Ning YAN , Yi-Wen CHEN , Che-Wei KUO , Wei CHEN , Hong-Jheng JHU , Xianglin WANG , Bing YU
IPC: H04N19/176 , H04N19/122 , H04N19/147 , H04N19/196 , H04N19/61
CPC classification number: H04N19/176 , H04N19/122 , H04N19/147 , H04N19/196 , H04N19/61
Abstract: Implementations of the disclosure provide a video decoding apparatus and method for transform coefficient sign prediction on a video decoder side. The method includes: receiving a bitstream including a sequence of sign signaling bits; determining a sign prediction area in a transform block of a video frame from a video for performing the sign prediction for the transform coefficients of the transform block; generating a plurality of candidate hypotheses for a set of candidate transform coefficients associated with the sign prediction area of the transform block; selecting a hypothesis from the plurality of candidate hypotheses as a set of predicted signs for the set of candidate transform coefficients based on a cost function; and estimating original signs for the set of candidate transform coefficients based on the set of predicted signs and the sequence of sign signaling bits.
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公开(公告)号：US20240283968A1
公开(公告)日：2024-08-22
申请号：US18646732
申请日：2024-04-25
Inventor： Yi-Wen CHEN , Xiaoyu XIU , Che-Wei KUO , Hong-Jheng JHU , Wei CHEN , Ning YAN , Xianglin WANG , Bing YU
IPC: H04N19/52 , H04N19/159 , H04N19/176
CPC classification number: H04N19/52 , H04N19/159 , H04N19/176
Abstract: Methods, apparatuses, and non-transitory computer-readable storage mediums are provided for video coding. In one method, a decoder derives a first reference picture and a second reference picture for a current coding block; the decoder derives a first predictor sample based on a first motion vector associated with the first reference picture using a motion compensation process from the first reference picture; the decoder derives a second predictor sample based on a second motion vector associated with the second reference picture using the motion compensation process from the second reference picture; and the decoder obtains a final predictor sample in the current coding block based on at least one of the first predictor sample or the second predictor sample and an out-of-boundary (OOB) condition.
