How do i smooth sharp image ?

[silc]

I'm trying to clean a raw manga. The image is pretty sharp (you can see pixels of box) and the page is clean. Is there a way to smooth it ?

[bobrianto]

resizing image (ex: original = 1200px. resize to 1201px and return it back to 1200px) usually have an anti-aliasing effect.

or you could use to filter >> blur. that's the only way i know. there might be other filter that can make it smoother. but i'm no pro.

[Revilenigma]

if there's no screentones than try "noise reducer"(play with the settings) and than level it. That might help.

[chiresakura]

http://senbonzakura.kageyoshi.net/2008/01/03/precleaning-diffuse-filter/

This might help ^_^