Article

Penumbra maps: approximate soft shadows in real-time

Authors:

Charles HansenAuthors Info & Claims

EGRW '03: Proceedings of the 14th Eurographics workshop on Rendering

Pages 202 - 207

Published: 25 June 2003 Publication History

Abstract

Generating soft shadows quickly is difficult. Few techniques have enough exibility 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.

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Cited By

Ali HKolivand HSunar M(2017)Soft bilateral filtering shadows using multiple image-based algorithmsMultimedia Tools and Applications10.5555/3048787.304886076:2(2591-2608)Online publication date: 1-Jan-2017
https://dl.acm.org/doi/10.5555/3048787.3048860
Selgrad KDachsbacher CMeyer QStamminger M(2015)Filtering Multi-Layer Shadow Maps for Accurate Soft ShadowsComputer Graphics Forum10.1111/cgf.1250634:1(205-215)Online publication date: 1-Feb-2015
https://dl.acm.org/doi/10.1111/cgf.12506
Eisemann EAssarsson USchwarz MWimmer M(2009)Casting Shadows in Real TimeACM SIGGRAPH ASIA 2009 Courses10.1145/1665817.1722963Online publication date: 16-Dec-2009
https://dl.acm.org/doi/10.1145/1665817.1722963
Show More Cited By

Index Terms

Penumbra maps: approximate soft shadows in real-time
1. Computing methodologies
  1. Artificial intelligence
    1. Computer vision
      1. Image and video acquisition
        3D imaging
  2. Computer graphics
    1. Animation
    2. Image manipulation
      1. Texturing

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Information & Contributors

Information

Published In

cover image ACM Other conferences

EGRW '03: Proceedings of the 14th Eurographics workshop on Rendering

June 2003

320 pages

ISBN:3905673037

Conference Chairs:
Philip Dutré
Katholieke Universiteit Leuven
,
Frank Suykens
Katholieke Universiteit Leuven
,
Program Chairs:
Per H. Christensen
Pixar Animation Studios
,
Daniel Cohen-Or
Tel Aviv University

Sponsors

EUROGRAPHICS: The European Association for Computer Graphics

Publisher

Eurographics Association

Goslar, Germany

Publication History

Published: 25 June 2003

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EGSR03

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EUROGRAPHICS

EGSR03: Eurographics Symposium on Rendering 2003

June 25 - 27, 2003

Leuven, Belgium

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Cited By

Ali HKolivand HSunar M(2017)Soft bilateral filtering shadows using multiple image-based algorithmsMultimedia Tools and Applications10.5555/3048787.304886076:2(2591-2608)Online publication date: 1-Jan-2017
https://dl.acm.org/doi/10.5555/3048787.3048860
Selgrad KDachsbacher CMeyer QStamminger M(2015)Filtering Multi-Layer Shadow Maps for Accurate Soft ShadowsComputer Graphics Forum10.1111/cgf.1250634:1(205-215)Online publication date: 1-Feb-2015
https://dl.acm.org/doi/10.1111/cgf.12506
Eisemann EAssarsson USchwarz MWimmer M(2009)Casting Shadows in Real TimeACM SIGGRAPH ASIA 2009 Courses10.1145/1665817.1722963Online publication date: 16-Dec-2009
https://dl.acm.org/doi/10.1145/1665817.1722963
Johnson GHunt WHux AMark WBurns CJunkins SHaines EMcGuire MAliaga DOliveira M(2009)Soft irregular shadow mappingProceedings of the 2009 symposium on Interactive 3D graphics and games10.1145/1507149.1507159(57-66)Online publication date: 27-Feb-2009
https://dl.acm.org/doi/10.1145/1507149.1507159
Annen TDong ZMertens TBekaert PSeidel HKautz J(2008)Real-time, all-frequency shadows in dynamic scenesACM SIGGRAPH 2008 papers10.1145/1399504.1360633(1-8)Online publication date: 11-Aug-2008
https://dl.acm.org/doi/10.1145/1399504.1360633
Annen TDong ZMertens TBekaert PSeidel HKautz J(2008)Real-time, all-frequency shadows in dynamic scenesACM Transactions on Graphics10.1145/1360612.136063327:3(1-8)Online publication date: 1-Aug-2008
https://dl.acm.org/doi/10.1145/1360612.1360633
Annen TMertens TBekaert PSeidel HKautz J(2007)Convolution shadow mapsProceedings of the 18th Eurographics conference on Rendering Techniques10.5555/2383847.2383857(51-60)Online publication date: 25-Jun-2007
https://dl.acm.org/doi/10.5555/2383847.2383857
Guennebaud GBarthe LPaulin M(2006)Real-time soft shadow mapping by backprojectionProceedings of the 17th Eurographics conference on Rendering Techniques10.5555/2383894.2383922(227-234)Online publication date: 26-Jun-2006
https://dl.acm.org/doi/10.5555/2383894.2383922
Forest VBarthe LPaulin MDoggett MWimmer M(2006)Realistic soft shadows by penumbra-wedges blendingProceedings of the 21st ACM SIGGRAPH/EUROGRAPHICS symposium on Graphics hardware10.1145/1283900.1283907(39-46)Online publication date: 3-Sep-2006
https://dl.acm.org/doi/10.1145/1283900.1283907
Tatarchuk NFinnegan JShreiner D(2006)Practical parallax occlusion mapping with approximate soft shadows for detailed surface renderingACM SIGGRAPH 2006 Courses10.1145/1185657.1185830(81-112)Online publication date: 30-Jul-2006
https://dl.acm.org/doi/10.1145/1185657.1185830
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