公开(公告)号：EP3989579A1

公开(公告)日：2022-04-27

申请号：EP20826110.7

申请日：2020-06-18

申请人： Electronics and Telecommunications Research Institute

发明人： LIM, Sung Chang ,  KANG, Jung Won ,  LEE, Ha Hyun ,  LEE, Jin Ho ,  KIM, Hui Yong

IPC分类号： H04N19/61 ,  H04N19/593 ,  H04N19/70 ,  H04N19/176 ,  H04N19/109

摘要： Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether or not a transform skip mode is applied to a current block; based on the transform skip mode flag, when a transform skip mode is applied to the current block, determining that secondary transform/inverse transform is not applied to the current block; and, according to the transform skip mode flag, when a transform skip mode is not applied to the current block, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, according to the transform matrix index, determining whether or not secondary transform/inverse transform is applied to the current block.

公开(公告)号：EP3989577A1

公开(公告)日：2022-04-27

申请号：EP20826819.3

申请日：2020-06-08

申请人： Electronics and Telecommunications Research Institute

发明人： LEE, Jin Ho ,  KANG, Jung Won ,  LEE, Ha Hyun ,  LIM, Sung Chang ,  KIM, Hui Yong

IPC分类号： H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/119 ,  H04N19/176 ,  H04N19/137 ,  H04N19/186

摘要： Disclosed herein are a method and an apparatus for encoding/decoding an image. The image decoding method according to the present invention includes obtaining prediction information of a current block from a bitstream and, by performing prediction based on the prediction information, generating a prediction block of the current block. Herein, the prediction information includes split prediction information of the current block. The generating of the prediction block includes obtaining a reference sample from a neighboring block of the current block, applying an interpolation filter to the reference sample, and generating the prediction block by using the reference sample to which the interpolation filter is applied. The interpolation filter is determined based on the split prediction information of the current block.

公开(公告)号：EP3941051A2

公开(公告)日：2022-01-19

申请号：EP21178773.4

申请日：2011-08-17

申请人： Electronics and Telecommunications Research Institute

发明人： LIM, Sung Chang ,  KIM, Hui Yong ,  JEONG, Se Yoon ,  CHO, Suk Hee ,  KIM, Jong Ho ,  LEE, Ha HYUN ,  LEE, Jin Ho ,  CHOI, Jin Soo ,  KIM, Jin Woong ,  AHN, Chie Teuk

IPC分类号： H04N19/119 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/33 ,  H04N19/463 ,  H04N19/70

摘要： The present invention relates to a video encoding method and apparatus for setting and encoding quantization parameters, and to a video decoding method and apparatus for decoding and setting quantization parameters in a video encoding and decoding apparatus which uses blocks having various sizes and depths as encoding and decoding units.

公开(公告)号：EP3917142A1

公开(公告)日：2021-12-01

申请号：EP19903158.4

申请日：2019-12-24

申请人： Electronics and Telecommunications Research Institute ,  Chips&Media, Inc

发明人： LIM, Sung Chang ,  KANG, Jung Won ,  LEE, Ha Hyun ,  LEE, Jin Ho ,  KIM, Hui Yong ,  KIM, Dae Yeon

IPC分类号： H04N19/124 ,  H04N19/105 ,  H04N19/176 ,  H04N19/119 ,  H04N19/50 ,  H04N19/117 ,  H04N19/94 ,  H04N19/136 ,  H04N19/70 ,  H04N19/61

摘要： Disclosed herein is a method of encoding/decoding an image. The image decoding method includes decoding information on a quantization matrix from a bitstream, acquiring a quantization matrix of a current block based on the information on the quantization matrix, and dequantizing the current block using the quantization matrix of the current block. The acquiring of the quantization matrix of the current block includes deriving a single identifier using at least one of a size of the current block, a prediction mode or a color component, and acquiring the quantization matrix of the current block based on the single identifier.

公开(公告)号：EP3829178A1

公开(公告)日：2021-06-02

申请号：EP21150983.1

申请日：2011-04-11

申请人： Electronics and Telecommunications Research Institute

发明人： LEE, Jin Ho ,  KIM, Hui Yong ,  JEONG, Se Yoon ,  CHO, Suk Hee ,  LEE, Ha Hyun ,  KIM, Jong Ho ,  LIM, Sung Chang ,  CHOI, Jin Soo ,  KIM, Jin Woong ,  AHN, Chie Teuk

IPC分类号： H04N19/593 ,  H04N19/157 ,  H04N19/82 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/136

摘要： The present invention relates to a method of performing intra-prediction, including determining whether to apply a first filter to a reference pixel value based on information about surrounding blocks of a current block, if, as a result of the determination, the first filter is determined to be applied, applying the first filter to the reference pixel value, performing intra-prediction for the current block based on the reference pixel value, determining whether to apply a second filter to a prediction value for each prediction mode of the current block, predicted by performing the intra-prediction based on the information about the surrounding blocks, and if, as a result of the determination, the second filter is determined to be applied, applying the second filter to the prediction value for each prediction mode.

公开(公告)号：EP3823285A1

公开(公告)日：2021-05-19

申请号：EP21150984.9

申请日：2011-04-11

申请人： Electronics and Telecommunications Research Institute

发明人： LEE, Jin Ho ,  KIM, Hui Yong ,  JEONG, Se Yoon ,  CHO, Suk Hee ,  LEE, Ha Hyun ,  KIM, Jong Ho ,  LIM, Sung Chang ,  CHOI, Jin Soo ,  KIM, Jin Woong ,  AHN, Chie Teuk

IPC分类号： H04N19/593 ,  H04N19/157 ,  H04N19/82 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182 ,  H04N19/136

摘要： The present invention relates to a method of performing intra-prediction, including determining whether to apply a first filter to a reference pixel value based on information about surrounding blocks of a current block, if, as a result of the determination, the first filter is determined to be applied, applying the first filter to the reference pixel value, performing intra-prediction for the current block based on the reference pixel value, determining whether to apply a second filter to a prediction value for each prediction mode of the current block, predicted by performing the intra-prediction based on the information about the surrounding blocks, and if, as a result of the determination, the second filter is determined to be applied, applying the second filter to the prediction value for each prediction mode.

公开(公告)号：EP3817381A1

公开(公告)日：2021-05-05

申请号：EP19826305.5

申请日：2019-06-28

申请人： Electronics and Telecommunications Research Institute ,  Chips&Media, Inc

发明人： LIM, Sung Chang ,  KANG, Jung Won ,  LEE, Ha Hyun ,  LEE, Jin Ho ,  KIM, Hui Yong ,  KIM, Dae Yeon ,  PARK, Dong Jin ,  JANG, Myoung Hun ,  JEONG, Wook Je

IPC分类号： H04N19/103 ,  H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/184

摘要： There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding information on whether or not to perform motion information refinement from a bitstream, obtaining second motion information for first motion information on a current block on the basis of the information and reconstructing at least one of the current block and a neighboring block of the current block by using at least one of the first motion information and the second motion information.

公开(公告)号：EP3767952A1

公开(公告)日：2021-01-20

申请号：EP20195005.2

申请日：2013-01-18

申请人： Electronics and Telecommunications Research Institute

发明人： LIM, Sung Chang ,  KIM, Hui Yong ,  LEE, Jin Ho ,  CHOI, Jin Soo ,  KIM, Jin Woong

IPC分类号： H04N19/52

摘要： A method for decoding an image according to the present invention comprises the steps of: decoding a residual block by quantizing and inverse transforming an entropy-decoded residual block; generating a prediction block via motion compensation; and decoding an image by adding the decoded residual block to the prediction block, wherein on the basis of the maximum number of motion vector candidates of the motion vector candidate list related to the prediction block, a motion vector candidate list is adjusted by adding a particular motion vector candidate or by discarding a portion from among the motion vector candidates, and in the prediction block generation step, a prediction motion vector of the prediction block is determined on the basis of the adjusted motion vector candidate list. Accordingly, the complexity of arithmetic operations is reduced during encoding/decoding of an image.

公开(公告)号：EP2806637B1

公开(公告)日：2020-10-21

申请号：EP13738327.9

申请日：2013-01-18

申请人： Electronics and Telecommunications Research Institute

发明人： LIM, Sung Chang ,  KIM, Hui Yong ,  LEE, Jin Ho ,  CHOI, Jin Soo ,  KIM, Jin Woong

IPC分类号： H04N19/52

公开(公告)号：EP3720129A1

公开(公告)日：2020-10-07

申请号：EP18882727.3

申请日：2018-11-29

申请人： Electronics and Telecommunications Research Institute

发明人： LIM, Sung Chang ,  KANG, Jung Won ,  LEE, Ha Hyun ,  JUN, Dong San ,  KO, Hyun Suk ,  LEE, Jin Ho ,  KIM, Hui Yong

IPC分类号： H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60 ,  H04N19/124 ,  H04N19/426 ,  H04N19/593

摘要： The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise decoding filter information on a coding unit; classifying samples in the coding unit into classes on a per block classification unit basis; and filtering the coding unit having the samples classified into the classes on a per block classification unit basis by using the filter information.