02-12-2018, 06:55 PM
Thanks, every day you learn something new :-)
Regarding your remark, I wrote the plugin after I had to process a few hundred pictures shot by a (not so bad) pocket camera in non-ideal lighting conditions, where the resulting documents are not evenly lit. (Pictures not taken by me).
Has I known this technique I might have not bothered writing this filter ...
Still, your suggestion does 2-level thresholding with a local threshold based on average background levels.
My plugin behaves slightly different. Anything above the threshold is turned into white, but anything below is kept as-is, so it has some antialiasing effect.
Maybe I could try doing something similar with the curve tool.
Regarding your remark, I wrote the plugin after I had to process a few hundred pictures shot by a (not so bad) pocket camera in non-ideal lighting conditions, where the resulting documents are not evenly lit. (Pictures not taken by me).
Has I known this technique I might have not bothered writing this filter ...
Still, your suggestion does 2-level thresholding with a local threshold based on average background levels.
My plugin behaves slightly different. Anything above the threshold is turned into white, but anything below is kept as-is, so it has some antialiasing effect.
Maybe I could try doing something similar with the curve tool.