Title:
METHOD AND DEVICE FOR DECODING PICTURE BY INTRA-PREDICTION IN PICTURE CODING SYSTEM
Document Type and Number:
Japanese Patent JP2023024731
Kind Code:
A
Abstract:
To provide a method for video decoding executed by a decoding device.SOLUTION: The method includes the steps of: forming an MPM list for a current block on the basis of the intra-prediction model of an adjacent block to the current block; deriving the intra-prediction mode of the current block on the basis of prediction mode information and the MPM list; deriving the adjacent sample to the current block; and deriving a reference sample for predicting a target sample of the current block in the adjacent sample on the basis of the position of a target sample and the prediction angle of the intra-prediction mode. The intra-prediction mode is a directional intra-prediction mode with a prediction angle of larger than 0. The prediction angle of the intra-prediction mode is determined as the angle formed by the prediction direction of the intra-prediction mode and the closer one of a horizontal prediction direction and a vertical prediction direction.SELECTED DRAWING: Figure 14
Inventors:
Yu Sung Mi
Icheho
Choi Changwon
Seo Cheong-dong
Hotin
Icheho
Choi Changwon
Seo Cheong-dong
Hotin
Application Number:
JP2022207855A
Publication Date:
February 16, 2023
Filing Date:
December 26, 2022
Export Citation:
Assignee:
LG ELECTRONICS INC.
International Classes:
H04N19/117; H04N19/157; H04N19/176; H04N19/70
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Akira Kawai
Tomohiro Nanzan
Takemoto Minoru
Shinji Mihashi
Akira Kawai
Tomohiro Nanzan
Takemoto Minoru