Close
Cyberbeing said:
If you are talking about your https://dl.dropboxusercontent.com/u/35156/test/tooikirameki_Page_01.jpg image, the webserver doesn't seem to support CMYK jpegs (inversed colors). The tanakamura & caffe versions also don't seem to support proper CMYK->RGB conversion either (over saturated), so you would really need to re-save it as a RGB image first before filtering: http://i.imgbox.com/PKA0iPCL.png

Even so, that image does show how waifu2x denoising is less than perfect and can still get confused when jpeg artifacts are intense enough. It does a decent job, but there is a lot of low-medium frequency residual which would need to be cleaned up in some other way afterwords: http://i.imgbox.com/90icit2D.png

Fooling around a bit, if you do 3-passes of waifu2x high denoising + some manual patching + history brush, you'll end up with something decent given the source: http://i.imgbox.com/0Wm8Rh6t.png
The color changes are what I meant, but yeah it does a decent job but the artifacts are rather absurdly over the top to begin with so I just did it for giggles.