op's not a photoshop filter retards, it's a watercolor. just because i knew you blind ass fucktards would stick to your dumb idea, i'm going to guide your eyes for you. 1. see how the shade depicting the darkest part of her ass crack is one solid shape? that's a stroke, and photoshop filters are too stupid to simplify things that elegantly. 2. this area would appear differently in a photograph. in fact, i think it isn't even painted accurately. the foreshortening was too hard for the artist. 3. watercolor bleeding. i'm not aware of a filter that can emulate it that well. 4. the shapes here were definitely chosen by the artist. it shows some innacuracy, the shapes and values are simplified way more than in other areas of a painting. 5. this just looks obviously painted to me. the coloring looks innacurate and exaggerated to differentiate her foot from the background. sorry if you retards don't see what i mean.
that having been said, it was run through a photoshop filter afterwards, probably by someone else cause the image was low resolution and to blow it up and make it look good that would be necessary