SHADOWPIX: Multiple Images from Self Shadowing
Publication
Computer Graphics Forum (Proceedings of Eurographics 2012)
Authors
Amit Bermano, Ilya Baran, Marc Alexa, Wojciech Matusik
Abstract
SHADOWPIX are white surfaces that display several prescribed images formed by the self-shadowing of the surface when lit from certain directions. The effect is surprising and not commonly seen in the real world. We present algorithms for constructing SHADOWPIX that allow up to four images to be embedded in a single surface. SHADOWPIX can produce a variety of unusual effects depending on the embedded images: moving the light can animate or relight the object in the image, or three colored lights may be used to produce a single colored image. SHADOWPIX are easy to manufacture using a 3D printer and we present photographs, videos, and renderings demonstrating these effects.