US 12,368,869 B2
Chroma processing for video encoding and decoding
Edouard Francois, Cesson-Sevigne (FR); Remi Jullian, Rennes (FR); and Franck Hiron, Chateaubourg (FR)
Assigned to InterDigital Madison Patent Holdings, SAS, Paris (FR)
Filed by InterDigital Madison Patent Holdings, SAS, Paris (FR)
Filed on Nov. 1, 2023, as Appl. No. 18/499,526.
Application 18/499,526 is a continuation of application No. 17/608,416, granted, now 11,843,791, previously published as PCT/US2020/030256, filed on Apr. 28, 2020.
Claims priority of application No. 19305565 (EP), filed on May 3, 2019; application No. 19305773 (EP), filed on Jun. 18, 2019; application No. 19305901 (EP), filed on Jul. 2, 2019; and application No. 19290049 (EP), filed on Jul. 5, 2019.
Prior Publication US 2024/0064316 A1, Feb. 22, 2024
Int. Cl. H04N 19/30 (2014.01); H04N 19/132 (2014.01); H04N 19/167 (2014.01); H04N 19/172 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/30 (2014.11) [H04N 19/132 (2014.11); H04N 19/167 (2014.11); H04N 19/172 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11)] 18 Claims
OG exemplary drawing
 
11. An apparatus for encoding picture information comprising one or more processors configured to:
determine a block of chroma prediction residuals from a block of chroma prediction samples associated with a block of chroma samples included in the picture information;
determine an index in a chroma scaling factor table of a chroma scaling factor to be applied to the block of a chroma prediction residuals;
scale the block of chroma prediction residuals based on the chroma scaling factor to provide a block of scaled chroma prediction residuals;
transform and quantize the block of scaled chroma prediction residuals to provide transform coefficients of the block of chroma prediction residuals;
encode a syntax element representative of the index in the chroma scaling factor table of the scaling factor to be applied to the block of chroma prediction residuals; and
encode a block of the picture information based on the block of scaled chroma prediction residuals.