CONVERSION METHOD OF IMAGE DATA, IMAGE DATA CONVERTER, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a conversion method of printing image data attended with pseudo color processing that obtains a color density for properly expressing a surprint state. SOLUTION: A conversion arithmetic section 4 acquires Pi(i=any of C, M, Y, K) that is a substantial color density of one process color in an image region and a substantial particular color density s from raster data DR, acquires Gibeing a pseudo color conversion rate from the particular color into the process color from particular color information IS, carries out a conversion arithmetic operation of Hi=Pi+(1-Pi)×s×Gito calculate a proof color density Hiin the unit of pixels as to each image region, wherein Hiis the proof color density obtained by the conversion arithmetic operation. The proof color density Hireflects both the gradation change in the process color and the particular color without saturating the color density. COPYRIGHT: (C)2007,JPO&INPIT