Patent ID: 8049765

Claim:
A color gamut mapping method of a color gamut mapping unit for a display device comprising: converting image data having an original gamut into lightness, chroma and hue data at the color gamut mapping unit; adjusting a primary hue angle of the original gamut according to a reproduction gamut and adjusting the hue data according to the adjustment amount of the primary hue angle at the color gamut mapping unit; changing the lightness of an original gamut boundary in consideration of a reproduction gamut boundary and changing the brightness data by the change amount of the lightness of the original gamut boundary at the color gamut mapping unit; deciding a focal point, which is a reference point of color gamut mapping, according to the size, the shape and the position of the original and/or reproduction gamut in lightness and chroma coordinates at the color gamut mapping unit; deciding a mapping slope according to the decided focal point FP and a mapping area in which the lightness and chroma data are located and mapping the original gamut to the reproduction gamut according to the decided mapping slope at the color gamut mapping unit; and converting the lightness, chroma and hue data mapped to the reproduction gamut into image data at the color gamut mapping unit.