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Screen space anisotropic blurred soft shadows

Published: 07 August 2011 Publication History

Abstract

Generating soft shadows by area light sources is important for rendering a realistic scene in computer graphics. One of the methods for real time rendering of soft shadows is Screen-space percentage-closer soft shadows(SSPCSS)[MohammadBagher et al. 2010] which improved the performance of PCSS[Fernando 2005] when the light source is large, by using separable Gaussian filtering in screen space. However, SSPCSS does not consider the angle between a normal vector of a shadowed surface and a viewing vector. Therefore, it causes different soft shadows by viewpoints. Our algorithm solves this problem by using anisotropic Gaussian blurs which depend on the normal vectors of the surfaces (Fig. 1).

References

[1]
Fernando, R. 2005. Percentage-closer soft shadows. In ACM SIGGRAPH 2005 Sketches, ACM, New York, NY, USA, SIGGRAPH '05.
[2]
MohammadBagher, M., Kautz, J., Holzschuch, N., and Soler, C. 2010. Screen-space percentage-closer soft shadows. In ACM SIGGRAPH 2010 Posters, ACM, New York, NY, USA, SIGGRAPH '10, 133:1--133:1.
[3]
Pham, T., and Van Vliet, L. 2005. Separable bilateral filtering for fast video preprocessing. In Multimedia and Expo, 2005. ICME 2005. IEEE International Conference on, IEEE, 4.

Cited By

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  • (2016)Separable soft shadow mappingThe Visual Computer: International Journal of Computer Graphics10.1007/s00371-015-1062-632:2(167-178)Online publication date: 1-Feb-2016
  • (2014)Efficient Screen Space Anisotropic Blurred Soft ShadowsIEICE Transactions on Information and Systems10.1587/transinf.E97.D.2038E97.D:8(2038-2045)Online publication date: 2014
  • (2013)Screen Space Anisotropic Blurred Soft Shadows by Efficient Separable Filtering MethodProceedings of the 2013 International Conference on Cyberworlds10.1109/CW.2013.75(124-131)Online publication date: 21-Oct-2013

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  1. Screen space anisotropic blurred soft shadows

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      cover image ACM Conferences
      SIGGRAPH '11: ACM SIGGRAPH 2011 Posters
      August 2011
      92 pages
      ISBN:9781450309714
      DOI:10.1145/2037715
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      Published: 07 August 2011

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      View all
      • (2016)Separable soft shadow mappingThe Visual Computer: International Journal of Computer Graphics10.1007/s00371-015-1062-632:2(167-178)Online publication date: 1-Feb-2016
      • (2014)Efficient Screen Space Anisotropic Blurred Soft ShadowsIEICE Transactions on Information and Systems10.1587/transinf.E97.D.2038E97.D:8(2038-2045)Online publication date: 2014
      • (2013)Screen Space Anisotropic Blurred Soft Shadows by Efficient Separable Filtering MethodProceedings of the 2013 International Conference on Cyberworlds10.1109/CW.2013.75(124-131)Online publication date: 21-Oct-2013

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