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Questions about changing colors from one color space to another, most often to match the original color as closely as possible.
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Prevent white border effect when converting an image to grayscale with ImageMagick
For printing images on a Epson TM-T88v receipt printer, I had to convert a PNG file to a 4-bit grayscale PNG by using ImageMagick.
Using the following command I'm getting pretty good results except o …