It’s in German, but you’ll definitely get the point – Diminished Reality is basically about erasing anything from a video that you wouldn’t like to see there, sort of working as a very specific-function Photoshop for videos or live video feeds. How it works is actually quite funny – objects are deleted from a lo-rez version of the video and then it’s re-sampled to its original quality. There’s some English info on the background on with an English-language video, so check them out as well. (via cpc)