METHOD, APPARATUS AND COMPUTER PROGRAM FOR TRANSFORMING DIGITAL COLOUR IMAGES

摘要

A general framework for adaptive gamut mapping is presented in which the image is first decomposed in two bands, one containing the local means, the other the local variations. Two spatial and colour adaptive gamut mapping algorithms are introduced. Based on spatial colour bilateral filtering, they take into account the colour properties of the neighbourhood of each pixel. Their goal is to preserve both the colour values of the pixels and their relations between neighbours.