US 12,192,527 B2
Cross component end of block flag coding
Xin Zhao, San Jose, CA (US); Madhu Peringassery Krishnan, Mountain View, CA (US); and Shan Liu, San Jose, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by Tencent America LLC, Palo Alto, CA (US)
Filed on Jan. 14, 2022, as Appl. No. 17/576,255.
Claims priority of provisional application 63/225,273, filed on Jul. 23, 2021.
Prior Publication US 2023/0035118 A1, Feb. 2, 2023
Int. Cl. H04N 19/70 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/91 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/91 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for decoding video data in a decoder, the method comprising:
receiving a first End of Block (EOB) flag associated with a first color component of a data block from the video data, wherein the first color component is one of Cr, Cb, or luma component of the data block;
determining a value for a second EOB flag associated with a second color component of the data block of the video data, wherein the second color component of the data block is another of the Cr, Cb, or luma color component of the data block that is co-located with the first color component of the data block such that they are in a same spatial position;
deriving a context for entropy encoding the first EOB flag based on the determined value of the second EOB flag by:
selecting a first predefined context for encoding the first EOB associated with the first color component when the second EOB is of a first value; and
selecting a second predefined context different from the first predefined context for encoding the first EOB associated with the first color component when the second EOB is of a second value; and
entropy decoding of the first EOB flag based on the derived context.