“A general two-pass method integrating specular and diffuse reflection” by Sillion and Puech
Conference:
Type:
Title:
- A general two-pass method integrating specular and diffuse reflection
Presenter(s)/Author(s):
Abstract:
We analyse some recent approaches to the global illumination problem by introducing the corresponding reflection operators, and we demonstrate the advantages of a two-pass method. A generalization of the system introduced by Wallace et al. at Siggraph ’87 to integrate diffuse as well as specular effects is presented. It is based on the calculation of extended form-factors, which allows arbitrary geometries to be used in the scene description, as well as refraction effects. We also present a new sampling method for the calculation of form-factors, which is an alternative to the hemi-cube technique introduced by Cohen and Greenberg for radiosity calculations. This method is particularly well suited to the extended form-factors calculation. The problem of interactive display of the picture being created is also addressed by using hardware-assisted projections and image composition to recreate a complete specular view of the scene.
References:
1. James F. Blinn. Models of light reflection for computer syntl~esized pictures. Computer Graphics, 11:192-198, 1977. Proceedings SIGGRAPH 1977.
2. Michael F’. Cohen, Shenchang Eric Chen, John R. Wallace, and Donald P. Greenberg. A progressive refinement approach to fast radiosity image generation. Computer Graphics, 22(4):75-84, August 1988. Proceedirtgs SIGGRAPH 1988 in Atlanta.
3. Michael F. Cohen and Donald P. Greenberg. The hemi-cube : A radiosity solution for complex environments. Computer Graphics, 19(3):31- 40, July 1985. Proceedings SIGGRAPH 1985 in San Fransisco.
4. Robert L. Cook, Thomas Porter, and Loren Carpenter. Distributed ray tracing. Computer Graphics, 18:137-147, July 1984. Proceedings SIGGRAPH 1984 in Minneapolis.
5. Robert L. Cook and Kenneth E. Torrance. A reflectance model for computer graphics. A ChI Trar,sactions on Graphics, 1:7-24, 1982.
6. Franklin C. Crow. Summed-area tables for texture mapping. Computer Graphics, 18:207-212, July 1984. Proceedings SIGGRAPIt 1984 in Minneapolis.
7. Olivier Devillers, Claude Paech, and Franqois Sillion. CIL : un rnod- ~le d’illumination int~gs’ar~t les rdflexionz diffuse et sp~culaire. Technical Report 87-12, Labori~toire d’Informatique de I’ENS, 45 rue d’Ulln, 75230 Paris Cedex 05, France, October 1987.
8. Cindy M. Goral, Kenneth E. Torrance, Donald P. Greenberg, and Bennett BattaJle. Modeling the interaction of light between diffuse surfaces. Computer Graphics, 18(3):213-222, July 1984. Proceedings SIG- GRAPH 1984 in Minneapolis.
9. Robert W. ttornbeck. Numericttl Methods. Quantum Publishers, 1975.
10. David S. Immel, Michael F. Cohen, and Donald P. Greenberg. A radiosity method for non-dlffuse environments. Computer Graphics, 20(4):133-142, August 1986. Proceedings SIGGRAPH 1986 in Dallas.
11. James T. Kajiya. The rendering equation. Compute1″ Graphics, 20(4):143-150, August 1986, Proceedings S1GGRAPH 1986 in Dallas.
12. T. Nishita and E. Nakanlae. Continuous tone represent atiol~ of threedimesional objects taking account of sltadows and interrellection, Cornputer Graphics, 19(3):23-30, July 1985. Proceedings SIGGRAPIt 1985 in San Francisco.
13. Bui-Tuong Phong. Illumfi~ation for Computer Generated Images. PhD thesis, University of Utah, t973.
14. Holly E. Rushmeier and Kenneth E. Torrance. The zonal method for calclflating light intensifies in the presence of a part.icip~ting medi~m. Computer Graphics, 21(4):293-302, July 1987. Proceedings SIG- GRAPH 1987 in Anaheim.
15. Min-Zhi Shao, Qun-ShelLg Peng, and You-Dung Liang. A llew radiosity approach by procedural refinements for realistic image synthesis. Cornpurer Graphics, 22(4):93-101, August 1988. Proceedings SIGGRAPH 1988 in Atlanta.
16. Franqois Siilion. Sintulatio~ de l’dclairage pour la synthdsc d’images : l~dalisme et Dderactivit(. PhD thesis, Universitd Paris XI. June 1989. (available from LIENS).
17. John R. Wallace, l~lichac’l F. Cohen, and Donald P. Greenberg. A twopass solution to the rendering e(luation : a synthesis of ray-~,racing and radiosity methods. Cort~puter Graphics, 21(4):311-320, July’ 1987. Proceedings SIGGRAPII 1987 in Anaheim.
18. Gregory J. Ward, Francis M. Rubinstein, and Robert D. Clear. A ray tracing solution for diffuse interreflection. Computer Graphics, 22(4):85-92, August 1988. ProceedingsSIGGRAPlt 1988 in Atlanta.
19. John E. Warnock. A Hidden-Surface Algorithm for Computer Generated Halftone Pictures. Technical Report 4-15, University of Utah Computer Science Dept., June 1969. NTIS AD 753 671.
