04-01-2018 дата публикации
Номер: US20180007372A1
Принадлежит:
The present disclosure generally relates to a method and device of encoding a color picture having color components (Ec) comprising obtaining () a luminance component (L) and two chrominance components (C, C) from the color picture to be encoded. The method for encoding a color picture having color components comprising obtaining at least one chrominance component from the color picture to be encoded, the method further comprises: —determining a first factor based on the value of each pixel (i) of said luminance component; —obtaining at least one final chrominance component by scaling said at least one chrominance component by said first factor; and—encoding () said at least one final chrominance component. 119-. (canceled)201212. A method for encoding a color picture having color components comprising obtaining a luminance component (L) and two final chrominance components (C , C) from the color picture to be encoded , obtaining a final luminance component (L″) and two final chrominance components (C″ , C″) , and encoding said final luminance component (L″) and said at least one final chrominance component , [{'sup': '−1', 'determining a first factor (β(L(i)) based on the value of each pixel (i) of the luminance component (L);'}, {'b': 1', '2', '1', '2', '1', '2, 'claim-text': {'br': None, 'i': L″=L−mC″', '−nC″, 'sub': 1', '2}, 'obtaining the two final chrominance components (C″, C″) by scaling the two chrominance components (C, C) by the first factor; and—obtaining the final luminance component (L″) by linearly combining together the luminance component (L) and the two final chrominance components (C″, C″) as follows], 'characterized in that the method further comprises{'b': 1', '2, 'where L is the luminance component, L″ is the final luminance component, C″ and C″ are the two final chrominance components, m and n are none null coefficients.'}21. The method of claim 20 , wherein the method further comprises storing the coefficients m and n in either a local or ...
Подробнее