I have in my hands about 8,000 images that have been dithered to 256 colors or less using those pescy dithering algorithms from Photoshop and alike. Now a need has arisen to restore those images to highest quality possible, and as part of this restoration, I would like to apply some sort of undithering on them.
I'm fine with a solution that applies either reasonably priced (=less than $500) source code libraries, Windows software that either supports batching or can be called command-line with all required settings passed in arguments, or just points me somewhere describing an algoritm in great enough detail that I can program it myself. In short, I'm looking for something that can be automated.
Now, the real problem I have is that the undithering type tests I've ran so far have all produced rather blurry images. If at all possible, I would rather avoid that. My object is to try to hide the dither -- at least some -- rather than do anything else to the image.
