| 摘要 |
Upon conversion of density and/or tone of an image, an impression of a specific color in the image is also corrected. Tone conversion is carried out in a CMY color space on image data having been subjected to logarithmic conversion, and density conversion processing is also carried out thereon in density conversion means. The image data are then subjected to inverse logarithmic conversion. In LCH conversion means, the image data are converted into lightness, saturation and hue, and the saturation and/or the hue are corrected by color impression correction means. By converting the data into RGB data by using RGB conversion means, processed image data are obtained.
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