US 12,137,205 B2
Method and device for video signal processing
Ki Baek Kim, Seo-gu (KR)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Sep. 15, 2022, as Appl. No. 17/932,585.
Application 17/932,585 is a continuation of application No. 17/192,733, filed on Mar. 4, 2021, granted, now 11,477,439.
Application 17/192,733 is a continuation of application No. PCT/KR2019/011554, filed on Sep. 6, 2019.
Claims priority of application No. 10-2018-0107255 (KR), filed on Sep. 7, 2018.
Prior Publication US 2023/0026401 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/119 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/119 (2014.11); H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for video signal processing, performed by a decoder, comprising:
determining an intra prediction mode of a current block;
determining a reference sample used for an intra prediction of the current block;
obtaining a predetermined matrix based on the intra prediction mode; and
predicting the current block based on the reference sample and the matrix, wherein predicting the current block based on the reference sample and the matrix comprises:
generating a prediction block by applying the matrix to the reference sample, wherein the prediction block is generated at predetermined positions in the current block;
wherein determining the reference sample comprises:
determining a neighboring region of the current block; and
performing down-sampling on the determined neighboring region, wherein the neighboring region is divided into a plurality of sample groups, the sample group comprises one or more samples, a representative value of the sample group is determined as the reference sample.