Shameless plug, but if you ever need to crop out the frame/surroundings of a bunch of photos of art: https://artsy.github.io/blog/2014/09/24/using-pattern-recog

Shameless plug, but if you ever need to crop out the frame/surroundings of a bunch of photos of art: https://artsy.github.io/blog/2014/09/24/using-pattern-recognition-to-automatically-crop-framed-art/ https://artsy.github.io/blog/2014/09/24/using-pattern-recogn...