COLOR SIGNAL PROCESSING DEVICE CAPABLE OF STORING COLOR GAMUT EFFICIENTLY AND METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a color signal processing device capable of efficiently storing information about a color gamut and using the stored color gamut such that a result of digital signal processing with respect to color signals can be represented in an expressible color gamut, and to provide a method of using the same. SOLUTION: The color signal processing device for efficiently storing a color gamut used for the color signal processing and using the stored color gamut includes: a calculating unit (41) for calculating the brightness, chroma, and hue of an input RGB color signal; a coordinate storing unit (43) for storing a predetermined coordinate having the brightness and the chroma with respect to a color categorized in accordance with a predetermined level; a color gamut determining unit (45) for determining a color gamut to display the input RGB color signal; and a signal processing unit (47) for digitizing the input RGB color signal within the determined color gamut. Thus, the color signal processing device can efficiently store the color gamut used for the processing of the color signal and use the stored color gamut. COPYRIGHT: (C)2004,JPO