I'm trying to get the best possible scan of a CD cover (although this would apply to any print media using CMYK halftoning).
With the highest setting on my scanner (3200dpi) I quickly run into the DPI of the print itself.
Here's a small portion for an example:
I can certainly blur the image, but there doesn't seem to be a good compromise for the blur radius between still having some grid artifacts and loosing too much detail. This is my best attempt:
Is there a better way to do this? Surely there's some filter that has more "knowledge" about halftones and can make a better result because of it.
The bluring above was done in GIMP, and while I'd love a GIMP solution, I'd appreciate any tool that can get the job done.