US 12,256,081 B2
Intra prediction method and apparatus for video sequence
Yin Zhao, Hangzhou (CN); Haitao Yang, Shenzhen (CN); and Jianle Chen, San Diego, CA (US)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on May 16, 2024, as Appl. No. 18/665,853.
Application 18/665,853 is a continuation of application No. 17/514,289, filed on Oct. 29, 2021, granted, now 12,022,081.
Application 17/514,289 is a continuation of application No. PCT/CN2020/081672, filed on Mar. 27, 2020.
Claims priority of application No. 201910370987.9 (CN), filed on Apr. 30, 2019.
Prior Publication US 2024/0305784 A1, Sep. 12, 2024
Int. Cl. H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/169 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/132 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/1883 (2014.11); H04N 19/96 (2014.11)] 18 Claims
OG exemplary drawing
 
1. An intra prediction method for a video sequence, comprising:
obtaining a size and a split mode of a chroma coding tree node;
determining, based on the size and the split mode of the chroma coding tree node, a first condition indicating whether to allow cross-component linear model (CCLM) intra prediction to be performed on a chroma coding unit included in the chroma coding tree node;
if it is determined that the first condition indicates to allow CCLM intra prediction based on the size and the split mode of the chroma coding tree node, determining a second condition indicating whether to allow the CCLM intra prediction to be performed on the chroma coding unit included in the chroma coding tree node based on a split mode and a size of a luma coding tree node;
determining a prediction mode of the chroma coding unit depending on the first or the second condition indicating whether to allow CCLM to be performed on the chroma coding unit; and
processing the chroma coding unit based on the prediction mode of the chroma coding unit to obtain prediction samples of the chroma coding unit.