A method and device for estimating a color mapping between two different color-graded versions of a picture

摘要

The present disclosure relates to a method and device for processing a picture comprising estimating a color mapping between a first color-graded version of picture whose values are represented in a first color volume and a second color-graded version of said picture whose values are represented in a second color volume, characterized in that it comprises
- obtaining (10) a first set of color values (S1) from the first color-graded version of the picture by taking into account at least one determined pixel in said first color-graded version of the picture, and obtaining a second set of color values (S2) from the second color-graded version of the picture by taking into account at least one determined pixel in said second color-graded version of the picture, each of said at least one determined pixel in the first color-graded version of the picture is co-located to one of said at least one determined pixel in the second color-graded version of the picture; and
- estimating (20) said color mapping between said first and second color-graded versions of the picture by estimating a color mapping function that maps the color values of said first set of color values onto the color values of said second set of color values.