Advertisement

The Visual Computer

, Volume 12, Issue 6, pp 307–316 | Cite as

A comparison of four visibility acceleration techniques for radiosity

  • Adelene Ng
Original Articles

Abstract

Four visibility acceleration techniques for speeding up the form-factor computation are presented and compared in this paper. Three-dimensional axis-aligned bounding boxes (BB), illumination volumes (IVs), and 3D convex hulls (CHs) are some of the methods described. A new method that enhances IVs with 3D axis-aligned BBs (BBIVs) is also proposed. The results of these methods are compared with the uniform space subdivision (USSD) method, which is used as a basis of comparison of the effectiveness of these acceleration methods. In addition, the advantages and the disadvantages of each of the proposed techniques is discussed.

Key words

Radiosity Ray tracing 3D axis-aligned bounding boxes 3D convex hulls Illumination volumes 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Aho AV, Hopcroft JE, Ullman JD (1983) Data structures and algorithms, Addison-Wesley, Reading, MassachussettsGoogle Scholar
  2. Amanatides J, Woo A (1987) A fast voxel traversal algorithm for ray tracing. In: Marechal G (ed) Eurographics '87, pp 3–10Google Scholar
  3. Cleary JG, Wyvill G (1988) Analysis of an algorithm for fast ray tracing using uniform space subdivision. Visual Comput 4: 65–83Google Scholar
  4. Cleary JG, Wyvill B, Birtwistle GM, Vatti R (1983) Multiprocessor ray tracing, Technical Report No. 83/128/17, Department of Computer Science, University of Calgary, Alberta, CanadaGoogle Scholar
  5. Cohen MF, Greenberg DP (1985) The HemiCube: a radiosity solution for complex environments. Comput Graph 19:31–40Google Scholar
  6. Fujimoto A, Tanaka T, Iwata K (1986) ARTS: accelerated ray tracing system. IEEE Comput Graph Appl 6:16–26Google Scholar
  7. Goldsmith J, Salmon J (1987) Automatic creation of object hierarchies for ray tracing. IEEE Comput Graph Appl 7:14–20Google Scholar
  8. Goral CM, Torrance KE, Greenberg DP, Battaile B (1984) Modeling the interaction of light between diffuse surfaces. Comput Graph 18:213–222Google Scholar
  9. Haines E, Wallace J (1991) Shaft culling for ray-traced radiosity. Proceedings of the 2nd Eurographics Workshop on Rendering, Barcelona, Springer-Verlag New York, pp 122–138Google Scholar
  10. Hanrahan P, Salzman D, Aupperle L (1991) A rapid hierarchical radiosity algorithm. Comput Graph 25:197–206Google Scholar
  11. Marks J, Walsh R, Christensen J, Friedell M (1990) Image and intervisibility coherence in rendering. Graph Interface 90:17–29Google Scholar
  12. Ng AWL (1994) Techniques for rapid computation of form factors in radiosity. PhD Thesis and Technical Report No. 680, Department of Computer Science, Queen Mary and Westfield College, University of London, LondonGoogle Scholar
  13. O'Rourke J (1994) Computational geometry in C, Cambridge University Press, CambridgeGoogle Scholar
  14. Preparata FP, Shamos MI (1985) Computational geometry: an introduction, Springer, Berlin Heidelberg New YorkGoogle Scholar
  15. Press WH, Flannery BP, Teukolsky SA, Vettering WT (1988) Numerical recipes in C — the art of scientific computing. Cambridge University Press, CambridgeGoogle Scholar
  16. Ritter J (1990) An efficient bounding sphere. In: Glassner A (ed) Graphics Gems I, pp 301—303Google Scholar
  17. Sommerville D (1959) Analytical geometry of three dimensions. Cambridge University Press, CambridgeGoogle Scholar
  18. Teller S, Hanrahan P (1993) Global visibility algorithms for illumination computations. Comput Graph 27:239–246Google Scholar
  19. Ullner MK (1983) Parallel machines for computer graphics. PhD Thesis and Technical Report No. 5112, Computer Science Department, California Institute of Technology, Pasadena, CalifGoogle Scholar
  20. Wallace JR, Elmquist KA, Haines EA (1989) A ray tracing algorithm for progressive radiosity, Comput Graph 23:315–324Google Scholar

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • Adelene Ng
    • 1
  1. 1.Department of Computer Science, Queen Mary and Westfield CollegeUniversity of LondonLondonUK

Personalised recommendations