| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image processor, an image processing method, an image processing program, and a medium with the image processing program recorded which allow quick execution of color conversion processing. <P>SOLUTION: At the time of color conversion of RGB data of points other than lattice points of a color conversion table 23a to CMYK data, CMYK data calculated once by tetrahedron interpolation arithmetics is stored in a hash table of a color conversion table 22a correspondingly to a hash key generated from the RGB data. Hereafter, corresponding CMYK data 22a6 to 22a9 are extracted from the hash table and are subjected to color conversion without executing the tetrahedron interpolation arithmetics again when RGB data from which a hash key number 22a1 is generated is inputted and coincides with RGB data 22a3 to 22a5 stored in the hash key number 22a1, and thus the processing speed of color conversion is increased. <P>COPYRIGHT: (C)2004,JPO |
