US 11,722,701 B2
Signaling of coding tools for encoding a video component as monochrome video
Cheung Auyeung, Sunnyvale, CA (US); Xiang Li, Saratoga, 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 Aug. 26, 2021, as Appl. No. 17/412,952.
Application 17/412,952 is a continuation of application No. 17/072,980, filed on Oct. 16, 2020, granted, now 11,368,723.
Claims priority of provisional application 62/924,674, filed on Oct. 22, 2019.
Prior Publication US 2021/0392380 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/70 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/44 (2014.01); H04N 19/60 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of video decoding performed in a video decoder, comprising:
receiving a first syntax element from a bitstream of a coded video, the first syntax element indicating whether a sequence of pictures are monochrome or include three color components that are coded separately; and
inferring a value of a second syntax element to disable a coding tool that uses multiple color components of a picture as input or depends on a chroma component of the picture based on the first syntax element indicating that the sequence of pictures include three color components that are coded separately, wherein the inferred value of the second syntax element indicates active color transform (ACT) is disabled.