Patent ID: 7920740

Claim:
A hue segmentation method for determining a color gamut of an image device, comprising: (a) generating a plurality of hue segments based on color information of a plurality of colors in a color gamut; (b) computing, using a processor, the total area of the hue segments; (c) calculating the area difference between the total area of the hue segments and the area of the color gamut; (d) comparing the area difference between the total area of the hue segments and the area of the color gamut with a predetermined precision value; (e) searching at least one vertex on at least one hue segment to allow the at least one vertex to subdivide the at least one hue segment into a plurality of additional hue segments when the area difference between the total area of the hue segments and the area of the color gamut is greater than the predetermined precision value; and (f) computing the area of the additional hue segments of the at least one hue segment so as to compute the total area of additional hue segments and the hue segments except the at least one hue segment until the area difference between the total area of additional hue segments and the hue segments except the at least one hue segment and the area of the color gamut is equal to or smaller than the predetermined precision value, and when the area difference between the total area of additional hue segments and the hue segments except the at least one hue segment and the area of the color gamut is greater than the predetermined precision value, repeating steps (b), (c), (d) and (e) until the area difference is equal to or smaller than the predetermined precision value.