Reuse of Paths in Final Gathering Step with Moving Light Sources

  • Mateu Sbert
  • Francesc Castro
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3039)

Abstract

In this paper we extend our previous result on reusing shooting paths when dealing with moving light sources in radiosity to the final gathering step algorithm, which combines a shooting solution and a gathering step. Paths are reused for each frame in both shooting and gathering steps, obtaining a noticeable reduction of cost in the computation of the solutions for every frame. Moreover, the correlation between consecutive frames happens to be higher than in the case of independent solutions, resulting in a clear reduction of the temporal aliasing effects in the animation.

Keywords

Radiosity Random Walk Animation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bekaert, P.: Hierarchical and Stochastic Algorithms for Radiosity. Ph.D. thesis. Katholic Univ. of Leuven (1999)Google Scholar
  2. 2.
    Bekaert, P., Sbert, M., Halton, J.: Accelerating Path Tracing by Re-Using Paths. In: Proceedings of Workshop on Rendering, pp. 125–134 (2002)Google Scholar
  3. 3.
    Cohen, M., Wallace, J.: Radiosity and Realistic Image Synthesis. Academic Press Professional, Cambridge (1993)MATHGoogle Scholar
  4. 4.
    Keller, A.: Instant Radiosity. In: Computer Graphics Proceedings, Siggraph 1997, pp. 49–56 (1997)Google Scholar
  5. 5.
    Perez, F.: Global Illumination Techniques for the Computation of High Quality Images in General Environments. Ph.D. thesis. Universitat Politècnica de Catalunya (2003)Google Scholar
  6. 6.
    Sbert, M., Castro, F., Halton, J.: Reuse of Paths in Light Source Animation. Computer Graphics International Proceedings (to appear as short paper) (2004)Google Scholar
  7. 7.
    Wann, H.: Jensen Global Illumination using Photon Maps. Rendering Techniques, 21–30 (2004)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Mateu Sbert
    • 1
  • Francesc Castro
    • 1
  1. 1.Institut d’Informàtica i AplicacionsUniversitat de GironaGironaSpain

Personalised recommendations