US 11,989,855 B2
Saturation control for high-dynamic range reconstruction
Francois Cellier, Rennes (FR); Yannick Olivier, Cesson-Sevigne (FR); Marie-Jean Colaitis, Cesson-Sevigne (FR); and David Touze, Cesson-Sevigne (FR)
Assigned to INTERDIGITAL VC HOLDINGS, INC., Wilmington, DE (US)
Appl. No. 16/768,282
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
PCT Filed Nov. 30, 2018, PCT No. PCT/US2018/063254
§ 371(c)(1), (2) Date May 29, 2020,
PCT Pub. No. WO2019/108899, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 17306671 (EP), filed on Nov. 30, 2017.
Prior Publication US 2021/0183028 A1, Jun. 17, 2021
Int. Cl. G06T 5/00 (2006.01); G06T 5/50 (2006.01)
CPC G06T 5/009 (2013.01) [G06T 5/50 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/20024 (2013.01); G06T 2207/20208 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
generating a tone mapping function to reduce dynamic range of a first image to generate a second image;
determining at least a luma component and a plurality of chroma components of the second image using the tone mapping function;
determining that one or more of the plurality of chroma components are saturated in the second image;
generating an adaptive function based on the one or more saturated chroma components of the second image;
performing a color correction on the second image using the adaptive function to generate color correction parameters for the second image based on the one or more saturated chroma components;
determining dynamic metadata associated with the color-corrected second image, the dynamic metadata comprising a subset of the color correction parameters generated for the second image, wherein the subset of the color correction parameters generated for the second image comprises one or more saturation gain parameters; and
transmitting a message that comprises the dynamic metadata associated with the color-corrected second image.