Publication Type |
technical report |
School or College |
College of Engineering |
Department |
Computing, School of |
Program |
Advanced Research Projects Agency |
Creator |
Wyman, Chris; Hansen, Charles D. |
Title |
Penumbra maps |
Date |
2003-04-23 |
Description |
Generating soft shadows quickly is difficult. Few techniques have enough flexibility to interactively render soft shadows in scenes with arbitrarily complex occluders and receivers. This paper introduces the penumbra map, which extends current shadow map techniques to interactively approximate soft shadows. Using object silhouette edges, as seen from the center of an area light, a map is generated containing approximate penumbral regions. Rendering requires two lookups, one into each the penumbra and shadow maps. Penumbra maps allow arbitrary dynamic models to easily shadow themselves and other nearby complex objects with plausible penumbrae. |
Type |
Text |
Publisher |
University of Utah |
Subject |
Penumbra maps; Soft shadows; Shadow maps |
Subject LCSH |
Shadows -- Computer simulation |
Language |
eng |
Bibliographic Citation |
Wyman, Chris; Hansen, Charles D. (2003). Penumbra maps. UUCS-03-008. |
Series |
University of Utah Computer Science Technical Report |
Relation is Part of |
ARPANET |
Rights Management |
©University of Utah |
Format Medium |
application/pdf |
Format Extent |
16,430,025 bytes |
Source |
University of Utah School of Computing |
ARK |
ark:/87278/s6sn0t21 |
Setname |
ir_uspace |
ID |
702392 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6sn0t21 |