Legacy ImageMagick Discussions Archive

Thanks, that makes total sense and works great for sketches with black lines.

Can we take it a step further and use it for drawings that have been colored in? How would IM remove only a light grey shade for the gridlines, and keep all other colors, not only black?

fmw42, Thank you so much. Your suggestions worked really well.

Which colors do you think would be easiest to filter out?

Edit: fixed typo.

I'm trying to remove a color by replacing it with the white background. It works partially, as you can see in the images below. Is it possible to fully replace a color? Reason: I use colored guidelines for drawing and need to remove the lines when the sketch is done and has been scanned. Here is the...