I happen to routinely need to do the following: Take a page or a piece of paper which has seen some wear (and sometimes tear); which is often printed with toners or ink cartridges running low, or with thermal printing that has somewhat faded; which has been crumpled and only partially straightened out for scanning; and often has some contents on the back side of the paper, or some annoying watermark on the front - and produce an easy-to-read, as straight-as possible version of the printed text.
I do not care about color reproduction quality; or extremely fine details - I care about readability of the text, visibility of lines and frames, and if there's an image in there (e.g. a logo) - I want it not to be completely messed up, i.e. a black blob or a completely-faded-out white stain is not good, other than that I'm flexible.
Now, I'm going to ask a separate question about a dedicated application for this, but for now - suppose I want to do this in gimp, because I want finer control over the parameters and maybe some more processing later on.
Are there filters I could get which take on this task?
- They need to be gratis
- Don't really care if they're libre
- Platform shouldn't matter, but if it does - Linux X86_64
- I use gimp 2.8 but am flexible on that (I know 2.10.x versions are out)