Patent ID: 8411106
Filing Date: 2013-04-02
Classification: G09G,H04N

Abstract:
1. A method for converting digital values corresponding to colors of an image from a source color space to a destination color space, the source color space being represented by a source color space transformation associated with a source color profile, and the destination color space being represented by a destination color space transformation associated with a destination color profile, the method comprising the following steps which are performed by one or more processing units executing a program stored in a memory: converting digital values corresponding to colors contained in the image from the source color space to digital values in a device-independent color space, using the source color space transformation; determining a gamut mapping from a source color gamut to a destination color gamut, by using a source gamut boundary description constructed from a source image profile which is separate from the source color profile, or by using a destination gamut boundary description constructed from a destination image profile which is separate from the destination color profile; converting the digital values in the device-independent color space to corresponding digital values in the device-independent color space using the gamut mapping, wherein the converted digital values represent gamut mapped digital values between the source gamut boundary description and the destination gamut boundary description; and transforming the gamut mapped digital values in the device-independent color space to corresponding digital values in the destination color space, using the destination color space transformation.