| 摘要 |
PROBLEM TO BE SOLVED: To produce a version with a single colorant out of a multi color image in a manner of storing color information existing in the image as much as possible. SOLUTION: In an image display method, proper texture patterns are produced to each color in the multi color image by using a continuously variable screening tool, the tool is produced by a mixture pattern from a set of reference screens, the reference screens correspond to, for example, selected reference colors in a color space not depending on a machine. A calculated screen is produced by mixture with weighting the reference screens placed nearby any color in the color space not depending on the machine, and the calculated screen is composed of arrays of thresholds. Each threshold corresponds to dot positions and pixels. If the pixels are larger than the corresponding thresholds, marks are placed at the corresponding dot positions.
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