US 12,081,781 B2
Image processing method and apparatus therefor
Sunmi Yoo, Seoul (KR); and Hyeongmoon Jang, Seoul (KR)
Assigned to Rosedale Dynamics LLC, Wilmington, DE (US)
Filed by Rosedale Dynamics LLC, Wilmington, DE (US)
Filed on Oct. 1, 2021, as Appl. No. 17/491,791.
Application 17/491,791 is a continuation of application No. 16/338,344, granted, now 11,166,036, previously published as PCT/KR2017/010778, filed on Sep. 28, 2017.
Claims priority of provisional application 62/401,898, filed on Sep. 30, 2016.
Prior Publication US 2022/0124357 A1, Apr. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/44 (2014.01); H04N 19/105 (2014.01); H04N 19/117 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/105 (2014.11); H04N 19/117 (2014.11); H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A video decoding method performed by a video decoding apparatus, the video decoding method comprising:
obtaining an intra prediction mode of a current block;
obtaining a reference sample for intra prediction based on a neighboring sample of the current block;
filtering on the reference sample based on a filtering being determined to be performed on the reference sample; and
generating a prediction block of the current block based on the intra prediction mode and the reference sample, which is filtered or not,
wherein, whether to perform the filtering on the reference sample is determined based on a distance between the current block and the reference sample and based on a first parameter representing a size of the current block, the size including a length of a horizontal edge of the current block and a length of a vertical edge of the current block, and
wherein the filtering on the reference sample is skipped when the intra prediction mode is a horizontal mode or is a vertical mode, independent of the size of the current block.