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I have some scans of nautical charts (like maps) that I want to input to another program to calibrate them. The help file for this program says: "Most maps and charts are about 12 colors or less, so they should be reduced to 16 colors … Charts and maps should be 16 color, because they get their clarity from block colors like a cartoon".
If I just change the Image|Mode to 16 (or 256) colors, it looks terrible. Areas around text become jagged, and some colors that should be uniform become dithered. Ideally, I’d like a way to map certain ranges of color to a solid color – I guess an interactive posterize?
What is the best way to do this in CS3?
If I just change the Image|Mode to 16 (or 256) colors, it looks terrible. Areas around text become jagged, and some colors that should be uniform become dithered. Ideally, I’d like a way to map certain ranges of color to a solid color – I guess an interactive posterize?
What is the best way to do this in CS3?
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