| 摘要 |
PROBLEM TO BE SOLVED: To automatically reduce information volume disappearing at the time of outputting color picture data generated by an electronic image pickup device to a monitor or a printer. SOLUTION: A color image processor is provided with a color type conversion means 3 for generating a lightness image of hue/saturation/lightness space regulated by a cylindrical coordinate system from a primary color image, an area division means 6 for analyzing the texture of the lightness image and dividing the lightness image into plural areas on the basis of the analytical result, a density conversion curve preparation means 7 for preparing the density conversion curve of the lightness image by smoothing the histogram of each divided area, a density conversion means 8 for converting the density of the lightness image by using the density conversion curve, and a color type reverse conversion means 5 for generating a primary color image by using the lightness image whose density is converted. |
