edit color

[jdd at dodin.org]

Hello,

I can't find a way to do this easily in digikam/showfoto.

I use my phone camera to "scan" a black and white document. I get a 
photo perfectly readable, but quite difficult to print, the white paper 
come gray (and use lot of ink), printer characters are too grey.

of course (:-) the characters are not equal in darkness, the lighting is 
more important on a part of the image.

any clue?

thanks
jdd
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