The most recent research project in the area of Diminished Reality.
Jan Herling and Wolfgang Broll have developed a software which allow you to remove on the screen, objects filmed through a normal camera.
First the software reduces the resolution of the image, removing the object, and then, the software improves the image to obtain the Diminished Reality. This technique, used in programs like photoshop, in this project is processed real time which make the results amazing.
Hands down one of the coolest things I have ever seen in my life.