公开(公告)号：EP3783899A1

公开(公告)日：2021-02-24

申请号：EP20196023.4

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/70 ,  H04N19/91 ,  H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/593 ,  H04N19/176 ,  H04N19/86 ,  H04N19/119

摘要： An image decoding method according to the present invention comprises: reconstructing an intra prediction mode group indicator and a prediction mode index of the current block; creating a first group with valid intra prediction modes of blocks left and above the current block; and, from the group indicated by the intra prediction mode group indicator, selecting a intra prediction mode corresponding to the prediction mode index as the intra prediction mode of the current block, wherein the size of a prediction block is in accordance with the information regarding the transformation size. Therefore, on the basis of the valid intra prediction modes of blocks left and above the current block, the intra prediction mode group indicator and the prediction mode index are determined by including, in the first group, the modes with high probabilities of being identical to the intra prediction mode of the current block, thereby reducing the amount of intra prediction information to be encoded.

公开(公告)号：EP3783898A1

公开(公告)日：2021-02-24

申请号：EP20195688.5

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/70 ,  H04N19/91 ,  H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/593 ,  H04N19/176 ,  H04N19/86 ,  H04N19/119

摘要： An image decoding method according to the present invention comprises: reconstructing an intra prediction mode group indicator and a prediction mode index of the current block; creating a first group with valid intra prediction modes of blocks left and above the current block; and, from the group indicated by the intra prediction mode group indicator, selecting a intra prediction mode corresponding to the prediction mode index as the intra prediction mode of the current block, wherein the size of a prediction block is in accordance with the information regarding the transformation size. Therefore, on the basis of the valid intra prediction modes of blocks left and above the current block, the intra prediction mode group indicator and the prediction mode index are determined by including, in the first group, the modes with high probabilities of being identical to the intra prediction mode of the current block, thereby reducing the amount of intra prediction information to be encoded.

公开(公告)号：EP3402199B1

公开(公告)日：2020-03-04

申请号：EP18181663.8

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/124 ,  H04N19/60 ,  H04N19/593 ,  H04N19/44 ,  H04N19/11 ,  H04N19/157

公开(公告)号：EP3917147A1

公开(公告)日：2021-12-01

申请号：EP21178975.5

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/70 ,  H04N19/157 ,  H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/91 ,  H04N19/105 ,  H04N19/61 ,  H04N19/117 ,  H04N19/182

摘要： A method for encoding an intra prediction mode according to the present invention selects an intra prediction mode for a current block, determines the number of valid MPM candidates by checking the validity of MPM candidates of the current block, and if the number of valid MPM candidates is less than a previously set number, adds additional intra prediction modes as MPM candidates. MPM candidates can be adaptively added on the basis of the directionality of valid MPM candidates. Additionally, during the encoding of residual intra prediction modes, residual intra prediction modes are realigned on the basis of the directionality of valid MPM candidates. Accordingly, the present invention allows the information for encoding the intra prediction mode of the current block to be minimized by adding MPM candidates or realigning the residual intra prediction modes on the basis of the directionality of valid MPM candidates.

公开(公告)号：EP3780622A1

公开(公告)日：2021-02-17

申请号：EP20196026.7

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/70 ,  H04N19/91 ,  H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/593 ,  H04N19/176 ,  H04N19/86

摘要： An image decoding method according to the present invention comprises: reconstructing an intra prediction mode group indicator and a prediction mode index of the current block; creating a first group with valid intra prediction modes of blocks left and above the current block; and, from the group indicated by the intra prediction mode group indicator, selecting a intra prediction mode corresponding to the prediction mode index as the intra prediction mode of the current block, wherein the size of a prediction block is in accordance with the information regarding the transformation size. Therefore, on the basis of the valid intra prediction modes of blocks left and above the current block, the intra prediction mode group indicator and the prediction mode index are determined by including, in the first group, the modes with high probabilities of being identical to the intra prediction mode of the current block, thereby reducing the amount of intra prediction information to be encoded.

公开(公告)号：EP3780623A1

公开(公告)日：2021-02-17

申请号：EP20196028.3

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/70 ,  H04N19/91 ,  H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/593 ,  H04N19/176

摘要： An image decoding method according to the present invention comprises: reconstructing an intra prediction mode group indicator and a prediction mode index of the current block; creating a first group with valid intra prediction modes of blocks left and above the current block; and, from the group indicated by the intra prediction mode group indicator, selecting a intra prediction mode corresponding to the prediction mode index as the intra prediction mode of the current block, wherein the size of a prediction block is in accordance with the information regarding the transformation size. Therefore, on the basis of the valid intra prediction modes of blocks left and above the current block, the intra prediction mode group indicator and the prediction mode index are determined by including, in the first group, the modes with high probabilities of being identical to the intra prediction mode of the current block, thereby reducing the amount of intra prediction information to be encoded.

公开(公告)号：EP2773118B1

公开(公告)日：2020-09-16

申请号：EP12843965.0

申请日：2012-04-20

申请人： INNOTIVE LTD

发明人： PARK, Shin Ji

IPC分类号： H04N19/70 ,  H04N19/91 ,  H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/593 ,  H04N19/176