US 11,695,962 B2
Encoding and decoding methods and corresponding devices
Fabrice Leleannec, Cesson-Sevigne (FR); Tangi Poirier, Cesson-Sevigne (FR); and Ya Chen, Cesson-Sevigne (FR)
Assigned to InterDigital VC Holdings, Inc., Wilmington, DE (US)
Appl. No. 16/766,361
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
PCT Filed Nov. 7, 2018, PCT No. PCT/US2018/059579
§ 371(c)(1), (2) Date May 22, 2020,
PCT Pub. No. WO2019/103845, PCT Pub. Date May 31, 2019.
Claims priority of application No. 17306628 (EP), filed on Nov. 23, 2017.
Prior Publication US 2020/0382810 A1, Dec. 3, 2020
Int. Cl. H04N 19/105 (2014.01); H04N 19/129 (2014.01); H04N 19/46 (2014.01); H04N 19/70 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/105 (2014.11); H04N 19/129 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)] 26 Claims
OG exemplary drawing
 
1. A method for decoding video data, comprising:
determining a context for a syntax element associated with a current transform coefficient of a current sub-block of a picture, the current sub-block resulting from a partitioning of a current block of samples according to a split mode selected from a plurality of split modes for splitting a block into at least one of rectangular sub-blocks or square sub-blocks, wherein the context is determined based on an area of said current sub-block, a position of the current transform coefficient within the current sub-block, and transform coefficients in a local template, wherein the local template is a subset of transform coefficients of the current sub-block comprising transform coefficients in a causal neighborhood of the current transform coefficient, wherein, regardless of the position of the current transform coefficient in the current sub-block, a position of at least one of the transform coefficients of the local template with respect to the current transform coefficient depends on the shape of the current sub-block resulting from the partitioning of the current block of samples according to the selected split mode; and
decoding said syntax element based at least on the determined context.