XnView Software

So at the risk of having a conversation with myself ....

Sort of as expected using NR first when it isn't necessary doesn't really help; if anything it might make things a bit worse as you would typically expect in cascading filters.

So while this is still probably a bug I was correct on a hunch I had about the cause and confirmed a bit of a workaround.

The images have a lot of background pattern (vellum fabric) that is basically noise to any algorithm. When this is coupled with a drawing that has a lot of fine line design work ...

OK so this is very strange. There seems to be some unusual bug in the Floyd Steinberg Binary dithering routine. I have a bunch of *very* large tif scans (150-200 MB) that I am cropping and converting to monochrome (~1/200 the size). I was cruising along and after about a dozen or so ran into at ...

Bump.

This was actually my question but I forgot to login. So am I just missing something on the "input filetype filter" or does this just not exist at present?