| 摘要 |
PROBLEM TO BE SOLVED: To provide an image processing apparatus and method, and a program for enhancing a cache hit ratio concerning cache processing in color conversion, thereby increasing efficiency in color conversion processing, and to provide a recording medium. SOLUTION: The image processing apparatus for converting first image data to be expressed with a plurality of element colors into second image data to be expressed with a plurality of other element colors includes: a means for generating a hash value, based on the distribution ratio of the plurality of element colors to be determined based on the characteristic of the color for color conversion and a human visual sense characteristic on the basis of the input first image data; a color conversion table for indicating correspondence relationship between the first image data and the second image data in accordance with the hash value; and a means for applying color conversion to the second image data corresponding to the generated hash value, based on the color conversion table. When the generated hash value is not present in the color conversion table, the hash value and the correspondence relationship between the first image data and the second image data are added to the color conversion table. COPYRIGHT: (C)2008,JPO&INPIT
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