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公开(公告)号：US20240333961A1
公开(公告)日：2024-10-03
申请号：US18742180
申请日：2024-06-13
申请人： GOOGLE LLC
发明人： Debargha Mukherjee , James Bankoski , Yue Chen , Yuxin Liu , Sarah Parker
IPC分类号： H04N19/517 , H04N19/105 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/182 , H04N19/46
CPC分类号： H04N19/517 , H04N19/105 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/182 , H04N19/46
摘要： Generating a compound predictor block includes generating a first predictor block and generating a second predictor block. The first predictor block includes a first pixel and the second predictor block includes a second pixel. The first and the second pixels are located at a same location within the first predictor block and the second predictor block, respectively. A first weight is determined for the first pixel based on a difference between a first value of the first pixel and a second value of the second pixel. A second weight is determined for the second pixel based on the first weight. The compound predictor block is generated by combining the first predictor block and the second predictor block. The compound predictor block includes a weighted pixel that is determined based on a weighted sum of the first pixel and the second pixel based on the first weight and the second weight.
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2.发明授权公开(公告)号：US12081790B2
公开(公告)日：2024-09-03
申请号：US18129290
申请日：2023-03-31
申请人： SK TELECOM CO., LTD.
发明人： Sunyeon Kim , Jeongyeon Lim , Joohee Moon , Yunglyul Lee , Haekwang Kim , Byeungwoo Jeon , Juock Lee , Dongwon Kim
IPC分类号： H04N19/517 , H04N19/46 , H04N19/463 , H04N19/523 , H04N19/91
CPC分类号： H04N19/517 , H04N19/46 , H04N19/463 , H04N19/523 , H04N19/91
摘要： The present disclosure relates to a method and apparatus for improving the encoding efficiency by adaptively changing the resolution of the motion vector in the inter prediction encoding and inter prediction decoding of a video. The apparatus includes: a predicted motion vector calculator for calculating a predicted motion vector of a current block to be encoded using motion vectors of one or more surrounding blocks; and a skip mode encoder for encoding a result of performing a prediction of the current block and information indicating that the current block is a skip block when the predicted motion vector satisfies a skip condition, wherein at least one motion vector among the motion vectors of the surrounding blocks and the motion vector of the current block has a resolution different from resolutions of the other motion vectors.
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公开(公告)号：US12034963B2
公开(公告)日：2024-07-09
申请号：US17731470
申请日：2022-04-28
申请人： GOOGLE LLC
发明人： Debargha Mukherjee , James Bankoski , Yue Chen , Yuxin Liu , Sarah Parker
IPC分类号： H04N11/02 , H04N19/105 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/517
CPC分类号： H04N19/517 , H04N19/105 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/182 , H04N19/46
摘要： Generating a compound predictor block for a current block of video includes generating, for the current block, a first predictor block using one of inter-prediction or intra-prediction and generating a second predictor block. The first predictor block includes a first pixel and the second predictor block includes a second pixel that is co-located with the first pixel. A first weight is determined for the first pixel using a difference between a value of the first pixel and a value of the second pixel. A second weight is determined for the second pixel using the first weight. The compound predictor block is generated by combining the first predictor block and the second predictor block. The compound predictor block includes a weighted pixel that is determined using a weighted sum of the first pixel and the second pixel using the first weight and the second weight.
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公开(公告)号：US11997311B2
公开(公告)日：2024-05-28
申请号：US17267124
申请日：2019-09-17
申请人： MEDIATEK INC.
发明人： Man-Shu Chiang , Chih-Wei Hsu
IPC分类号： H04N19/56 , H04N19/176 , H04N19/517
CPC分类号： H04N19/56 , H04N19/176 , H04N19/517
摘要： Video processing methods and apparatuses for coding a current block generate a final predictor by combining multiple predictors of the current block. One of the predictors for the current block is a motion compensated predictor, which is generated according to one candidate selected from a first candidate list. The construction of the first candidate list includes deriving an average candidate by averaging motion information of existing candidates in the first candidate list. A second predictor for the current block is another motion compensated predictor or an intra predictor.
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公开(公告)号：US11997305B2
公开(公告)日：2024-05-28
申请号：US18105182
申请日：2023-02-02
发明人： Yue Yu , Limin Wang
IPC分类号： H04N19/513 , H04N19/105 , H04N19/107 , H04N19/172 , H04N19/176 , H04N19/70 , H04N19/96 , H04N19/517
CPC分类号： H04N19/513 , H04N19/105 , H04N19/107 , H04N19/172 , H04N19/176 , H04N19/70 , H04N19/96 , H04N19/517
摘要： A system and method are provided for inter-ceding video in which encoder and decoder memory requirements associated with storage of motion information related to collocated coding units is reduced. In some embodiments motion information related to only a single collocated coding unit may be stored at the encoder and decoder. In operation, if the encoder determines that motion information for a current coding unit should replace the currently stored motion information for the currently stored motion information for the collocated coding unit, then the encoder can replace the motion information at the encoder and transmit an indicator with the current coding unit to signal to the decoder that the motion information currently stored should be updated or replaced with the motion information associated with the current coding unit.
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公开(公告)号：US20240098298A1
公开(公告)日：2024-03-21
申请号：US18521182
申请日：2023-11-28
申请人： GOOGLE LLC
发明人： Debargha Mukherjee , Yuxin Liu , Sarah Parker
IPC分类号： H04N19/517 , H04N19/17 , H04N19/20 , H04N19/513 , H04N19/54 , H04N19/543 , H04N19/547 , H04N19/557 , H04N19/80
CPC分类号： H04N19/517 , H04N19/17 , H04N19/20 , H04N19/521 , H04N19/54 , H04N19/543 , H04N19/547 , H04N19/557 , H04N19/80
摘要： Multiple global motion models associated with respective segments of a current frame are decoded from a compressed bitstream. Each global motion model is based on a segmentation of the current frame and represents a respective underlying motion of blocks within a respective segment. Blocks of the current frame are decoded by: for each inter-predicted block of a segment, decoding, form the compressed bitstream, an indication of whether to decode the each inter-predicted block based on a global motion model of the multiple global motion models and associated with the segment, or whether to decode the each inter-predicted block based on a motion vector that is different from the global motion model; and decoding the each inter-predicted block based on the indication.
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公开(公告)号：US11936855B2
公开(公告)日：2024-03-19
申请号：US18165017
申请日：2023-02-06
发明人： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC分类号： H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/517 , H04N19/52 , H04N19/523 , H04N19/80
CPC分类号： H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/517 , H04N19/52 , H04N19/523 , H04N19/80
摘要： A method of video processing is provided to include: deciding a coding mode used for representing a current video block of a video in a coded representation of the video; and coding the current video block into the coded representation according to the coding mode, wherein use of alternative half-pel accuracy filters in addition to a default half-pel accuracy filter for representing motion information is disabled for the current video block due to use of the coding mode.
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公开(公告)号：US20240048752A1
公开(公告)日：2024-02-08
申请号：US18379344
申请日：2023-10-12
申请人： LG ELECTRONICS INC.
发明人： Seungwook PARK , Jaehyun Lim , Yongjoon Jeon , Hendry Hendry , Younghee Chol , Jaewon Sung , Jungsun Kim , Byeongmoon Jeon , Joonyoung Park
IPC分类号： H04N19/513 , H04N19/593 , H04N19/11 , H04N19/573 , H04N19/58 , H04N19/56 , H04N19/105 , H04N19/503 , H04N19/139 , H04N19/176 , H04N19/517
CPC分类号： H04N19/513 , H04N19/593 , H04N19/11 , H04N19/573 , H04N19/58 , H04N19/56 , H04N19/105 , H04N19/503 , H04N19/139 , H04N19/176 , H04N19/517
摘要： The present invention relates to the encoding and decoding of image information. According to the present invention, the decoding method comprises the steps of: entropy-decoding received information; performing inter prediction on a current block based on the entropy-decoded information; and restoring images by using the prediction results, wherein, in the inter prediction step, a skip mode or merge mode is applied to the current block and movement information of the current block may be determined based on the movement information of a neighboring block of the current block.
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公开(公告)号：US20230403406A1
公开(公告)日：2023-12-14
申请号：US18030699
申请日：2021-09-21
发明人： Philippe Bordes , Franck Galpin , Antoine Robert , Karam Naser
IPC分类号： H04N19/517 , H04N19/137 , H04N19/597 , H04N19/176
CPC分类号： H04N19/517 , H04N19/176 , H04N19/597 , H04N19/137
摘要： A video coding system performs motion prediction based on epipolar geometry. A first camera corresponds to a current frame, a second camera corresponds to a reference frame and epipolar geometry is used to determine motion parameters allowing to perform a prediction between the reference frame and the current frame.
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公开(公告)号：US11843798B2
公开(公告)日：2023-12-12
申请号：US17523286
申请日：2021-11-10
发明人： Li Zhang , Kai Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC分类号： H04N19/513 , H04N19/51 , H04N19/517 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186
CPC分类号： H04N19/513 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/51 , H04N19/517
摘要： A method for video processing is provided to include: determining a motion vector precision of one or more motion vectors related to a current video block of a video; selecting, based on the motion vector precision, a motion vector range; and performing, based on the motion vector range, a conversion between the current video block and a bitstream representation of the video.
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