http://gizmodo.com/an-algorithm-can-tell-if-youre-depressed-just-by-lookin-1785529915
As a colorblind photographer I had to roll my eyes at this one. While I’m sure there may be a bias towards certain filters I found some of the conclusions to be a little insulting. I’ve shot black and while and used filters that tend towards that both before and during my depression. On the other hand I’ve used brighter,might contrast stuff while in the worst of my depression.
While certainly darker tones and colors are common in subjects that depict depression or sadness I don’t feel like you can identify it through an algorithm.
