Image processing device, image processing method and program

An image processing device, comprising:

• a signal input converter that converts an input signal indicating an image into first image data of a first color gamut, the first image data being linear;
• a color gamut converter that converts the first image data into second image data for expressing a second color gamut narrower than the first color gamut;
• a blend coefficient determiner that decides a blend coefficient for defining a synthesis ratio of the first image data and the second image data based on a hue and a saturation obtained from the input signal;
• and
• a color synthesizer that synthesizes the first image data and the second image data by a ratio according to the decided blend coefficient to generate synthesis image data,
• wherein the blend coefficient determiner decides a first blend coefficient when the hue and the saturation belong to a first color domain range,
• wherein the blend coefficient determiner decides a second blend coefficient, by which a synthesis ratio of the second image data is reduced in comparison with the first blend coefficient, when the hue and the saturation belong to a second color domain range different from the first color domain range, and
• wherein the blend coefficient determiner decides a third blend coefficient, between the first blend coefficient and the second blend coefficient, when the hue and the saturation belong to a color domain range between the first color domain range and the second color domain range.