US 11,838,502 B2
Image processing method, and image encoding/decoding method and device which use same
Jin Ho Lee, Daejeon (KR); Jung Won Kang, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Sung Chang Lim, Daejeon (KR); Hui Yong Kim, Daejeon (KR); Dae Yeon Kim, Seoul (KR); and Yung Lyul Lee, Seoul (KR)
Assigned to Electronics And Telecommunications Research Institute, Daejeon (KR); CHIPS & MEDIA, INC, Seoul (KR); and Industry Academy Cooperation Foundation of Sejong University, Seoul (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR); CHIPS & MEDIA, INC, Seoul (KR); and INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR)
Filed on Aug. 10, 2022, as Appl. No. 17/885,349.
Application 17/885,349 is a continuation of application No. 17/314,192, filed on May 7, 2021, granted, now 11,463,690.
Application 17/314,192 is a continuation of application No. 16/633,340, granted, now 11,044,471, issued on Jun. 22, 2021, previously published as PCT/KR2018/008559, filed on Jul. 27, 2018.
Claims priority of application No. 10-2017-0096443 (KR), filed on Jul. 28, 2017; and application No. 10-2017-0096444 (KR), filed on Jul. 28, 2017.
Prior Publication US 2022/0385895 A1, Dec. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/11 (2014.01); H04N 19/176 (2014.01); H04N 19/18 (2014.01); H04N 19/46 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/11 (2014.11) [H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/46 (2014.11); H04N 19/593 (2014.11)] 7 Claims
OG exemplary drawing
 
1. An image decoding method comprising:
acquiring, from a bitstream, intra prediction mode information of a current block;
determining an intra prediction mode of the current block based on the intra prediction mode information;
when the current block is non-square, modifying the intra prediction mode of the current block according to a comparison result of the intra prediction mode indicated by the intra prediction mode information and a threshold;
deriving a reference sample of intra prediction of the current block;
generating a prediction block of the current block by performing intra prediction of the current block based on the intra prediction mode and the reference sample;
reconstructing the current block based on the prediction block; and
applying a filter to the reconstructed current block,
wherein the threshold is determined based on a ratio between a width to a height of the current block.