| 摘要 |
When an output color gamut is different from an input color gamut in a picture input/output system such as DTP, the color is corrected with a predetermined function for a difference in the lightness-directional dynamic range. A three-dimensional compression is made to compress the color of areas C and D to an area (A+B), and next a two-dimensional compression (or shrinkage) is made to compress the color of the area (B+C) to the area B, for example.
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