Blake and Bruno are two young innovators who decided to make something never seen before and give a completely new meaning to the word street art. Observing them create these moving image graffiti gives you an amazing insight into what the technology can do for the development of arts today.
They use paint rollers with infrared lights attached to them which send the tracking information directly to the computer and tell the projector where to project the video.
You can see more of their videos here on their Vimeo Page.
Source: Business Insider