Patent ID: 6414690
Filing Date: 2002-07-02
Classification: H04N

Abstract:
A method of remapping colors in an original document, preparatory to use in a system having an output system gamut different than originally applied, including:for a target pixel in a set of pixels defining at least a portion of an image, storing a set of neighboring pixels including said target pixel, wherein said target pixel and neighboring pixels form an NÃ—M set of pixels in said image; analyzing said set of neighboring pixels, determining at least one cluster for pixels therein; determining at least one cluster metric for each said cluster; determining at least one key color within each said cluster in said set of pixels; using said at least one cluster metric, mapping said at least one key color to a color inside said output system gamut; from said at least one remapped key color, determining at least one mapping vector representing the change thereof; and using said at least one mapping vector to remap target pixel.