Or a really smart algorithm ... photos. If you fed the neural network your edited photos, it eventually could learn to reproduce your personal photographic style. That alone makes it pretty cool.

The researchers on the project, Hany Farid and Eric Kee, designed their algorithm to be able to rank images from 1 through 5 in order to determine if it is slightly modified or highly edited.

But for artificial intelligence and computer vision systems ... University and Microsoft have developed STEGO, an algorithm able to identify images down to the individual pixel.