公开(公告)号：EP4436176A3

公开(公告)日：2024-10-23

申请号：EP24182040.6

申请日：2019-10-31

申请人： GOOGLE LLC

发明人： BOKOV, Alexander ,  SU, Hui

IPC分类号： H04N19/11 ,  H04N19/13 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/194 ,  H04N19/593

摘要： Machine learning is used to refine a probability distribution for entropy coding video or image data. A probability distribution is determined for symbols associated with a video block (e.g., quantized transform coefficients, such as during encoding, or syntax elements from a bitstream, such as during decoding), and a set of features is extracted from video data associated with the video block and/or neighbor blocks. The probability distribution and the set of features are then processed using machine learning to produce a refined probability distribution. The video data associated with a video block are entropy coded according to the refined probability distribution. Using machine learning to refine the probability distribution for entropy coding minimizes the cross-entropy loss between the symbols to entropy code and the refined probability distribution.

公开(公告)号：EP4391537A3

公开(公告)日：2024-09-18

申请号：EP24176095.8

申请日：2019-10-12

申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

发明人： WAN, Shuai ,  HUO, Junyan ,  MA, Yanzhuo ,  ZHANG, Wei

IPC分类号： H04N19/593 ,  H04N19/117 ,  H04N19/105 ,  H04N19/176 ,  H04N19/59 ,  H04N19/14 ,  H04N19/186

CPC分类号： H04N19/59 ,  H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/105 ,  H04N19/14 ,  H04N19/593

摘要： A method for picture prediction, an encoder, and a decoder are provided. The method includes the following. A reference value of a first colour component of a current block in a picture is determined, where the reference value of the first colour component of the current block is a first colour component value of a neighbouring sample of the current block. Filtering is performed on the reference value of the first colour component of the current block to obtain a filtered reference value. A model parameter of a prediction model is obtained using the filtered reference value, where the prediction model is used to map a value of the first colour component of the current block to a predicted value of a second colour component of the current block, and the second colour component is different from the first colour component

公开(公告)号：EP4376418A3

公开(公告)日：2024-09-11

申请号：EP24169305.0

申请日：2019-08-01

申请人： V-Nova International Ltd

发明人： MEARDI, Guido

IPC分类号： H04N19/33 ,  H04N19/91 ,  H04N19/93 ,  H04N19/132 ,  H04N19/14 ,  H04N19/167 ,  H04N19/17 ,  H04N19/182 ,  H04N19/187 ,  H04N19/36 ,  H04N19/124 ,  H04N19/50

CPC分类号： H04N19/33 ,  H04N19/91 ,  H04N19/93 ,  H04N19/36 ,  H04N19/122 ,  H04N19/136 ,  H04N19/61

摘要： There is provided a method of encoding a video signal, the method comprising: receiving an input frame; processing the input frame to generate at least one set of residuals data, the residuals data enabling a decoder to reconstruct the input frame from a reference reconstructed frame; and, applying a run-length coding operation to the set of residuals data, wherein the run-length coding operation comprises generating a run-length encoded bytestream comprising a set of symbols representing non-zero data values of the residuals data set and counts of consecutive zero values of the residuals data set. In certain embodiments the method comprises apply a Huffman coding operation to the set of symbols. A method of decoding is also provided as well as apparatuses and a computer readable medium.

公开(公告)号：EP3738307B1

公开(公告)日：2024-09-11

申请号：EP18902581.0

申请日：2018-12-20

IPC分类号： H04N19/117 ,  H04N19/86 ,  H04N19/137 ,  H04N19/159 ,  H04N19/14 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82 ,  H04N19/182

CPC分类号： H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/82 ,  H04N19/86

公开(公告)号：EP4047933B1

公开(公告)日：2024-07-31

申请号：EP20889141.6

申请日：2020-11-17

IPC分类号： H04N19/82 ,  H04N19/70 ,  H04N19/14 ,  H04N19/157 ,  H04N19/132 ,  H04N19/176 ,  H04N19/117

CPC分类号： H04N19/14 ,  H04N19/117 ,  H04N19/82 ,  H04N19/70 ,  H04N19/176 ,  H04N19/157

公开(公告)号：EP3175617B1

公开(公告)日：2024-07-31

申请号：EP15827758.2

申请日：2015-07-31

IPC分类号： H04N19/154 ,  H04N19/137 ,  H04N19/14 ,  H04N19/166 ,  H04N19/115 ,  H04N19/132 ,  H04N19/146 ,  H04N19/85 ,  H04N19/172

CPC分类号： H04N19/172 ,  H04N19/14 ,  H04N19/137 ,  H04N19/154 ,  H04N19/166 ,  H04N19/115 ,  H04N19/132 ,  H04N19/146 ,  H04N19/85

公开(公告)号：EP4399872A1

公开(公告)日：2024-07-17

申请号：EP22867993.2

申请日：2022-09-07

申请人： BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.

发明人： KUO, Che-wei ,  XIU, Xiaoyu ,  CHEN, Wei ,  WANG, Xianglin ,  CHEN, Yi-wen ,  JHU, Hong-jheng ,  YAN, Ning ,  YU, Bing

IPC分类号： H04N19/117 ,  H04N19/14 ,  H04N19/132 ,  H04N19/124 ,  H04N19/186 ,  H04N19/119

CPC分类号： H04N19/14 ,  H04N19/117 ,  H04N19/119 ,  H04N19/186 ,  H04N19/132 ,  H04N19/124

公开(公告)号：EP3932055B1

公开(公告)日：2024-07-17

申请号：EP19813695.4

申请日：2019-10-31

IPC分类号： H04N19/11 ,  H04N19/13 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/194 ,  H04N19/593

CPC分类号： H04N19/13 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/194 ,  H04N19/11 ,  H04N19/593

公开(公告)号：EP3955575B1

公开(公告)日：2024-07-03

申请号：EP20799360.1

申请日：2020-03-27

IPC分类号： H04N19/176 ,  H04N19/159 ,  H04N19/103 ,  H04N19/117 ,  H04N19/14 ,  H04N19/186

CPC分类号： H04N19/186 ,  H04N19/593 ,  H04N19/96 ,  H04N19/176 ,  H04N19/159 ,  H04N19/117 ,  H04N19/103 ,  H04N19/157 ,  H04N19/61 ,  H04N19/14

公开(公告)号：EP3232665B1

公开(公告)日：2024-07-03

申请号：EP17166234.9

申请日：2012-09-14

IPC分类号： H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/593 ,  H04N19/11 ,  H04N19/124 ,  H04N19/14 ,  H04N19/80 ,  H04N19/90 ,  H04N19/59 ,  H04N19/60

CPC分类号： H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/593 ,  H04N19/11 ,  H04N19/124 ,  H04N19/14 ,  H04N19/80 ,  H04N19/90 ,  H04N19/649 ,  H04N19/59