Legacy ImageMagick Discussions Archive

Hello, sorry for my bad english.
I am using ImageMagick-7.0.8-Q16 on Windows 7 32 bit.

I am a newbie, and probably this is an easy task. I would like to make white the dirty paper scan i did many years ago with old scanner.



How can i improve the result? I would like that yellow would remain yellow, i tried to play with -white-threshold but changing the values i dont't get much better results. Any idea? I would like to get "uniform colours" if you understand what i mean thx!

try this:
If on Windows in bat file, then double the % to %%.

Adjust the rgb color to better match the region you want to change to white and/or adjust the fuzz value.

See
https://www.imagemagick.org/Usage/color_basics/#replace
https://www.imagemagick.org/script/comm ... s.php#fuzz
https://www.imagemagick.org/script/comm ... s.php#fill
https://www.imagemagick.org/script/comm ... php#opaque

thx for the help, it works much better. In the end i used this and for the moment i am satisfied