Information processing device and method, and program

A non-transitory computer readable medium having recorded therein a computer program for causing a computer to execute an information processing method, said information processing method comprising:

• generating color gamut information representing the color gamut of image data based on table information indicating the highest chroma point at each equal hue plane regarding a plurality of equal hue planes;
• approximating, for each hue plane, a color gamut shape using a triangle connecting a white point, a black point, and the highest chroma point, and
• generating transmission color gamut information that is the color gamut information in a transmission format by employing the generated color gamut information,
• wherein the transmission color gamut information includes color gamut specification information including the basic information of the color gamut and color gamut body information including the detailed information of the color gamut, and the color gamut specification information includes index information specifying a color gamut other than a known color gamut.

An information processing device, comprising:

• a processor configured to operate as:
• a color gamut information generating unit that generates color gamut information representing the color gamut of image data based on table information indicating the highest chroma point at each equal hue plane regarding a plurality of equal hue planes, and for each hue plane, approximates a color gamut shape using a triangle connecting a white point, a black point, and the highest chroma point;
• and
• a transmission color gamut information unit that generates transmission color gamut information that is the color gamut information in a transmission format by employing the color gamut information generated by the color gamut information generating unit,
• wherein the transmission color gamut information includes color gamut specification information including the basic information of the color gamut and color gamut body information including the detailed information of the color gamut, and the color gamut specification information includes index information specifying a color gamut other than a known color gamut.

An information processing method, comprising:

• using a processor to carry out the following:
• generating color gamut information representing the color gamut of image data based on table information indicating the highest chroma point at each equal hue plane regarding a plurality of equal hue planes,
• approximating, for each hue plane, a color gamut shape using a triangle connecting a white point, a black point, and the highest chroma point, and
• generating transmission color gamut information that is the color gamut information in a transmission format by employing the generated color gamut information,
• wherein the transmission color gamut information includes color gamut specification information including the basic information of the color gamut and color gamut body information including the detailed information of the color gamut, and the color gamut specification information includes index information specifying a color gamut other than a known color gamut.