Now this is doovy:
Image Analogies. In short, some researchers have found a way of generating an image that differs from another image in the same way as two other images differ. This can be used for synthesising additional detail in low-resolution images, applying image-processing effects by example (i.e., turning photographs into drawings or oil paintings), or even making
pseudo-realistic scenes from simple drawings.
In fact, someone has even used it for
turning maps into "aerial photographs" for
flight simulation.
(via Satisfaction Refunded)