I’ve made a little video mapping browser extension! It’s simple. Aim your beamer at a rectangular surface and drag 4 corners to precisely map your video onto the target surface. But it’s also advanced. With it you can correct the perspective of the video source too. Just choose any region on the source video, which is distorted due to perspective but is supposed to be rectangular, and Mappertje will set it straight A bit like the Perspective Warp tool in Photoshop.
Read full post on MADtech.me: Mappertje.