US 12,470,710 B2
Unification of context-coded bins (CCB) count method
Ya Chen, Cesson-Sevigne (FR); Fabrice Le Leannec, Betton (FR); Franck Galpin, Cesson-Sevigne (FR); and Karam Naser, Cesson-Sevigne (FR)
Assigned to InterDigital CE Patent Holdings, SAS, Paris (FR)
Appl. No. 17/619,442
Filed by InterDigital CE Patent Holdings, SAS, Paris (FR)
PCT Filed Sep. 18, 2020, PCT No. PCT/EP2020/076067
§ 371(c)(1), (2) Date Dec. 15, 2021,
PCT Pub. No. WO2021/058381, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 19306161 (EP), filed on Sep. 23, 2019.
Prior Publication US 2022/0141466 A1, May 5, 2022
Int. Cl. H04N 19/12 (2014.01); H04N 19/176 (2014.01); H04N 19/61 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/12 (2014.11) [H04N 19/176 (2014.11); H04N 19/61 (2014.11); H04N 19/70 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method of video encoding, comprising:
obtaining prediction residuals, for a block in a picture, to be encoded with a transform skip residual coding process;
counting a first number of context-coded bins used to encode a set of syntax elements associated with level information of said prediction residuals in said block, during said transform skip residual coding process, wherein said set of syntax elements indicates, for a prediction residual, at least one of significance of said prediction residual, whether an absolute value of said prediction residual is greater than a value and a parity of said prediction residual, wherein a maximum number of context-coded bins is used to limit said first number of context-coded bins, and wherein said set of syntax elements are context coded before said first number of context-coded bins reaches said maximum number of context-coded bins and then are bypass coded after said first number of context-coded bins exceeds said maximum number of context-coded bins;
counting a second number of context-coded bins used to encode a set of syntax flags indicating signs of significant prediction residuals in said block, during said transform skip residual coding process, wherein another maximum number of context-coded bins is used to limit said second number of context-coded bins, and wherein said set of syntax flags are context coded before said second number of context-coded bins reaches said another maximum number of context-coded bins and then are bypass coded after said second number of context-coded bins exceeds said another maximum number of context-coded bins; and
entropy encoding said set of syntax elements and said set of syntax flags for said prediction residuals of said block.