US 12,067,957 B2
Color gamut compression and extension
Chang Su, Foothill Ranch, CA (US); Chenguang Liu, Tustin, CA (US); and Pradeep Nagesh, Irvine, CA (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Feb. 23, 2023, as Appl. No. 18/173,676.
Application 18/173,676 is a continuation of application No. 17/460,009, filed on Aug. 27, 2021, granted, now 11,615,763.
Claims priority of provisional application 63/110,056, filed on Nov. 5, 2020.
Prior Publication US 2023/0197035 A1, Jun. 22, 2023
Int. Cl. G09G 5/02 (2006.01); G09G 5/06 (2006.01); H04N 1/60 (2006.01); H04N 9/64 (2023.01); H04N 9/69 (2023.01)
CPC G09G 5/06 (2013.01) [G09G 2340/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining a first representation of a source gamut of an input content in a first device-independent color space;
determining a second representation of a target gamut of a display device in a second device-independent color space;
determining a color transition protection zone (TPZ) based on the source gamut and the target gamut, wherein the TPZ defines a color region inside both the source gamut and the target gamut; and
performing color gamut mapping from the first device-independent color space to the second device-independent color space based on the TPZ, wherein the color gamut mapping comprises determining a color gamut mapping dataset for performing linear color gamut compression and linear color gamut extension such that loss of perceptual vividness for colors in a source content is reduced on a user-end display.