US 11,750,807 B2
Method and apparatus for intra sub-partitions coding mode
Roman Igorevich Chernyak, Moscow (RU); Timofey Mikhailovich Solovyev, Moscow (RU); Yin Zhao, Hangzhou (CN); Sergey Yurievich Ikonin, Moscow (RU); 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 Aug. 11, 2021, as Appl. No. 17/399,679.
Application 17/399,679 is a continuation of application No. PCT/RU2020/050039, filed on Mar. 5, 2020.
Claims priority of provisional application 62/814,270, filed on Mar. 5, 2019.
Claims priority of provisional application 62/837,698, filed on Apr. 23, 2019.
Prior Publication US 2021/0385450 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/119 (2014.01); H04N 19/96 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/159 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/96 (2014.11)] 14 Claims
OG exemplary drawing
 
1. A method of coding implemented by a decoding apparatus, comprising:
obtaining information of intra sub-partitions (ISP), wherein the information of ISP indicates whether ISP is used for splitting a luma coding block of a coding unit;
determining a size of a chroma transform block (TB) of the coding unit based on SubWidthC and SubHeightC when at least a first condition is fulfilled, wherein SubWidthC and SubHeightC are variables depending on chroma format information, wherein the chroma format information indicates a chroma format of a picture the coding unit belongs to, the chroma format includes at least one of: 4:2:2, or 4:4:4, and wherein the first condition comprises: 1) a single tree is used to partition the coding unit, and 2) the information of ISP indicates that ISP is used for splitting the luma coding block;
wherein the size of the chroma transform block satisfies:
wC=CbWidth[x0][y0]/SubWidthC; and
hC=CbHeight[x0][y0]/SubHeightC;
wherein wC represents a width of the chroma transform block, hC represents a height of the chroma transform block, CbWidth represents a width of the luma coding block, and CbHeight represents a height of the luma coding block.