EyeEm has also developed its own computer vision software. The startup partnered with talented photographers to create a large collection of stock photography, and it needed image recognition technology to search and categorize the images. Their newest algorithms deal with the quality of the photo, so that the company can show users the best of their archives.
The scoring system looks at several aesthetic features, like the blurriness of certain objects or the placement of objects in each third of the photo, in addition to factors like human engagement.
See the full story here: http://techcrunch.com/2014/11/17/eyeems-algorithms-are-learning-what-makes-a-photo-great/