US 12,355,996 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)
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
Filed on May 18, 2023, as Appl. No. 18/198,886.
Application 18/198,886 is a continuation in part of application No. 16/766,361, granted, now 11,695,962, previously published as PCT/US2018/059579, filed on Nov. 7, 2018.
Claims priority of application No. 17306628 (EP), filed on Nov. 23, 2017.
Prior Publication US 2023/0291922 A1, Sep. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/129 (2014.01); H04N 19/176 (2014.01); H04N 19/44 (2014.01); H04N 19/46 (2014.01); H04N 19/60 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/44 (2014.11) [H04N 19/176 (2014.11); H04N 19/60 (2014.11); H04N 19/70 (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 a value representative of 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, a position of at least one of the transform coefficients of the local template with respect to the current transform coefficient depends on a value representative of 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.