公开(公告)号：EP4088455A1

公开(公告)日：2022-11-16

申请号：EP21738316.5

申请日：2021-01-11

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： JHU, Hong-Jheng ,  CHEN, Yi-wen ,  XIU, Xiaoyu ,  WANG, Xianglin ,  MA, Tsung-Chuan ,  YU, Bing

IPC分类号： H04N19/105 ,  H04N19/70 ,  H04N19/96 ,  H04N19/186 ,  H04N19/184 ,  H04N19/129

公开(公告)号：EP4082213A1

公开(公告)日：2022-11-02

申请号：EP20906639.8

申请日：2020-12-28

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： CHEN, Yi-Wen ,  XIU, Xiaoyu ,  MA, Tsung-Chuan ,  JHU, Hong-Jheng ,  WANG, Xianglin ,  YU, Bing

IPC分类号： H04N19/82 ,  H04N19/186 ,  H04N19/184 ,  H04N19/70 ,  H04N19/423

公开(公告)号：EP4062645A1

公开(公告)日：2022-09-28

申请号：EP20889028.5

申请日：2020-11-23

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： XIU, Xiaoyu ,  MA, Tsung-Chuan ,  CHEN, Yi-Wen ,  WANG, Xianglin ,  JHU, Hong-Jheng ,  YU, Bing

IPC分类号： H04N19/60 ,  H04N19/18 ,  H04N19/70 ,  H04N19/129

公开(公告)号：EP3984222A1

公开(公告)日：2022-04-20

申请号：EP21838961.7

申请日：2021-08-05

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： WANG, Xianglin ,  KUO, Che-Wei ,  XIU, Xiaoyu ,  WEI, Chen ,  CHEN, Yi-Wen ,  MA, Tsung-Chuan ,  JHU, Hong-Jheng ,  YU, Bing

IPC分类号： H04N19/132 ,  H04N19/119 ,  H04N19/105 ,  H04N19/186 ,  H04N19/96

公开(公告)号：EP3977731A1

公开(公告)日：2022-04-06

申请号：EP20814935.1

申请日：2020-05-29

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： WANG, Xianglin ,  JHU, Hong-Jheng ,  XIU, Xiaoyu ,  CHEN, Yi-Wen ,  MA, Tsung-Chuan ,  YE, Shuiming

IPC分类号： H04N19/119 ,  H04N19/70 ,  H04N19/436 ,  H04N19/184

公开(公告)号：EP4449722A1

公开(公告)日：2024-10-23

申请号：EP22908485.0

申请日：2022-12-16

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： XIU, Xiaoyu ,  YAN, Ning ,  CHEN, Yi-Wen ,  KUO, Che-Wei ,  CHEN, Wei ,  JHU, Hong-Jheng ,  GAO, Han ,  WANG, Xianglin ,  YU, Bing

IPC分类号： H04N19/60 ,  H04N19/18 ,  H04N19/176 ,  H04N19/13

公开(公告)号：EP4429237A3

公开(公告)日：2024-10-09

申请号：EP24190885.4

申请日：2020-09-23

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： JHU, Hong-Jheng ,  XIU, Xiaoyu ,  WANG, Xianglin ,  CHEN, Yi-Wen ,  MA, Tsung-Chuan ,  YU, Bing

IPC分类号： H04N19/124 ,  H04N19/122 ,  H04N19/186 ,  H04N19/157 ,  H04N19/70 ,  H04N19/119

CPC分类号： H04N19/119 ,  H04N19/70 ,  H04N19/186 ,  H04N19/124

摘要： A method for video encoding is provided. The method includes: determining, for a first coding block, a quantization parameter and a quantized level; deriving a scale value by looking up a scale level table based on the quantization parameter; and if the first coding block is coded in a transform skip mode, obtaining a residual sample for a sample in the first coding block based on the quantized level, the scale value and a plurality of bit-shifts by applying a first de-quantization operation; wherein the first de-quantization operation is also applied to obtain a reconstructed sample for an escape sample in a second coding block coded in a palette mode; and wherein a block size of the first coding block or the second coding block is not used for determining parameters of the first de-quantization operation, wherein the first de-quantization operation is as follows: pSample=pLevel×decScaleQP%6×2QP/626

公开(公告)号：EP4437728A1

公开(公告)日：2024-10-02

申请号：EP22896592.7

申请日：2022-11-22

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

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

IPC分类号： H04N19/577 ,  H04N19/176 ,  H04N19/105 ,  H04N19/119 ,  H04N19/44

CPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/139 ,  H04N19/109

公开(公告)号：EP4429243A2

公开(公告)日：2024-09-11

申请号：EP24190516.5

申请日：2020-12-28

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： CHEN, Yi-Wen ,  XIU, Xiaoyu ,  MA, Tsung-Chuan ,  JHU, Hong-Jheng ,  WANG, Xianglin ,  YU, Bing

IPC分类号： H04N19/423

CPC分类号： H04N19/423 ,  H04N19/82 ,  H04N19/117 ,  H04N19/156 ,  H04N19/182

摘要： The present invention is directed to a method for decoding video data, the method comprising: for a coding tree unit in a plurality of coding tree units divided from a video frame, obtaining, from a bitstream, a plurality of image samples, each image sample corresponding to one of a luma sample and a chroma sample; for each of the plurality of image samples, filtering a respective image sample using an adaptive loop filter having a filter length L and a set of filter coefficients, further including: identifying a set of related image samples of the respective image sample; for each of the set of related image samples, identifying a respective clip value index and a corresponding filter coefficient; clipping a difference between each of the set of related image samples and the respective image sample based on the respective clip value index, wherein the respective clip value index corresponds to a respective clipping boundary value equal to 2 to a power of a respective clipping number, and all respective clipping numbers corresponding to each respective clipping value index are integers; and modifying the respective image sample with the clipped difference between each of the set of related image samples and the respective image sample based on the corresponding filter coefficient.

公开(公告)号：EP4429242A2

公开(公告)日：2024-09-11

申请号：EP24190508.2

申请日：2020-12-28

申请人： Beijing Dajia Internet Information Technology Co., Ltd.

发明人： CHEN, Yi-Wen ,  XIU, Xiaoyu ,  MA, Tsung-Chuan ,  JHU, Hong-Jheng ,  WANG, Xianglin ,  YU, Bing

IPC分类号： H04N19/423

CPC分类号： H04N19/423 ,  H04N19/82 ,  H04N19/117 ,  H04N19/156 ,  H04N19/182

摘要： The present invention is directed to a method for encoding video data, the comprising the steps of obtaining a plurality of coding tree units divided from a video frame; for a coding tree unit in the plurality of coding tree units, obtaining a plurality of image samples, each image sample corresponding to one of a luma sample and a chroma sample; for each of the plurality of image samples, filtering a respective image sample using an adaptive loop filter having a filter length L and a set of filter coefficients, further including: identifying a set of related image samples of the respective image sample; for each of the set of related image samples, identifying a respective clip value index and a corresponding filter coefficient; clipping a difference between each of the set of related image samples and the respective image sample based on the respective clip value index, wherein the respective clip value index corresponds to a respective clipping boundary value equal to 2 to a power of a respective clipping number, and all respective clipping numbers corresponding to each respective clipping value index are integers; and modifying the respective image sample with the clipped difference between each of the set of related image samples and the respective image sample based on the corresponding filter coefficient.