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Special Topics:Summer Institute:1992

Penumbral Shadows by Adrian Mariano and Linus Upson

Mariano and Upson, undergraduates in the 1992 Geometry Center Summer Institute, produced a video that was accepted for the 1994 ACM Symposium on Computational Geometry video review. This frame illustrates their original observation that the shadows cast by a polygonal light source shining on a single polygon in a three-dimensional scene are the projections of four-dimensional polytopes. They used a direct simulation of the illumination process for the very complex light intensity distribution. This project is interesting both as an example of undergraduate research fostered by the unique Geometry Center environment, and as perhaps the first example of a research result communicated primarily by video rather than text. Their report is included in the Summer Institute 1992 reports.

Image created: summer, 1992

[Penumbral Shadows]

Copyright © summer, 1992 by The Geometry Center, Univerity of Minnesota. All rights reserved.
For permission to use this image, contact permission@geom.math.uiuc.edu.

External viewing: small (100x100 5k gif), medium (500x375 56k gif), or original size (640x480 193k tiff).

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Created: Sat May 22 23:17:49 CDT 1999 --- Last modified: Sat May 22 23:17:49 CDT 1999