Hello. I knew how to create coffee stain, there are too many
tutorials available for that but google always tell me what I knew. In
fact I don't need gimp to make coffee stain, I can simply pour coffee on
the print output. What I need is to remove coffee stain from a scanned
document.
In my case I think it should be easy because the document is printed in
blue color while coffee stain dark and red. A person can easily
tell documents from the stain, so should gimp. Can you recommend a
tutorial that I can follow, that solves similar problem?
Thanks
Zhang Weiwu
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