# US 8,570,338 B2 · Information processing device and method, and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,338 B2 - Document ID: US8570338B2 - Status: Granted - Kind: B2 - Application number: 12/462,667 - Filed: 2009-08-06 - Published: 2010-02-18 - Granted: 2013-10-29 - Earliest claimed: 2008-08-08 - Assignees: Sony Corporation - Applicants: Takami Mizukura; Naoya Katoh - Inventors: Takami Mizukura; Naoya Katoh - Web page: https://patentgrep.com/patent/US8570338B2 ## CPC - H04N 1/6058: {Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An information processing device includes: a color gamut information generating unit configured to generate 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. ## Claims ### Claim 1 An information processing device, comprising: color gamut information generating means configured to generate 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, wherein, for each hue plane, the color gamut information generating means approximates a color gamut shape using a triangle connecting a white point, a black point, and the highest chroma point; and transmission color gamut information generating means configured to generate transmission color gamut information that is the color gamut information in a transmission format by employing the color gamut information generated by said color gamut information generating means, 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. ### Claim 2 (depends on 1) The information processing device according to claim 1, wherein said table information represents said highest chroma point at each equal hue plane by employing a lightness value and a chroma value. ### Claim 3 (depends on 1) The information processing device according to claim 1, wherein said table information represents said highest chroma point at each equal hue plane by employing a lightness value and a color difference. ### Claim 4 (depends on 1) The information processing device according to claim 1, wherein said table information includes the hue of said equal hue plane indicating said highest chroma point as an index. ### Claim 5 (depends on 1) The information processing device according to claim 1, further comprising: color gamut conversion means configured to convert the color gamut of said image data by employing said color gamut information generated by said color gamut information generating means. ### Claim 6 (depends on 1) The information processing device according to claim 1, wherein said color gamut body information includes said color gamut information, and information specifying a specifying method of the range of said color gamut with said color gamut information. ### Claim 7 (depends on 1) The information processing device according to claim 1, further comprising: sending means configured to send said image data, and said transmission color gamut information generated by said transmission color gamut information generating means to another device. ### Claim 8 (depends on 1) The information processing device according to claim 1, wherein the color gamut other than the known color gamut is a synthetic color gamut formed of multiple color gamuts. ### Claim 9 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. ### Claim 10 (depends on 9) The non-transitory computer readable medium according to claim 9, wherein the color gamut other than the known color gamut is a synthetic color gamut formed of multiple color gamuts. ### Claim 11 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. ### Claim 12 (depends on 11) The information processing device according to claim 11, wherein the color gamut other than the known color gamut is a synthetic color gamut formed of multiple color gamuts. ### Claim 13 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. ### Claim 14 (depends on 13) The information processing method according to claim 13, wherein the color gamut other than the known color gamut is a synthetic color gamut formed of multiple color gamuts.