Taking inspiration from the rotoscope – an early filmmaking device that allowed animators to trace over live-action – the Japanese design group EUPHRATES used an innovative computer algorithm to capture outlines and extract other information from a video of a ballerina, Kurimu Urabe of the Bolshoi, dancing in a ballet studio. Working from that information, the filmmakers created dynamic animations to interact with the dancer. The resulting short video, Ballet Rotoscope, is an inspired and extremely satisfying slice of augmented reality.

Via Kottke