SHADOWPIX: Multiple Images from Self Shadowing

 

We present algorithms for constructing SHADOWPIX that allow up to four images to be embedded in a single surface. 

May 13, 2012
Eurographics 2012

 

Authors

Amit Bermano (Disney Research/ETH Joint PhD)

Ilya Baran (Disney Research)

Marc Alexa (Disney Research/TU Berlin)

Wojciech Matusik (Disney Research/MIT CSAIL)

SHADOWPIX: Multiple Images from Self Shadowing

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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 presentalgorithms 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.

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