http://techxplore.i2p/news/2015-09-neural-algorithm-photo-masterpiece-style-treatments.html
The Washington Post 's McFarland described their process: "The researchers create their new images by taking one image, such as a bland photo of a row of houses, and another image, a painting from a great artist. They then use what's called a convolutional neural network to create a new image, in which the style of the great artist is applied to the other photo ."