| 摘要 |
A method of converting a digital color image to a digital gray value image and in so doing distinguishably reproducing colors present in the color image is provided. The digital color image is built up of pixels each having a color value, and the digital gray value image is built up of pixels each having a gray value. The color values of the pixels are converted to gray values by the use of a dynamically adapted conversion function which is optimized on the basis of a comparison of color differences in the digital color image and gray value differences corresponding to the color differences in the digital gray value image. In this way, the colors which in conventional conversion methods are imaged on identical or substantially identical gray values can effectively be distinguishably reproduced.
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