This Article 
 Bibliographic References 
 Add to: 
Radiosity Redistribution for Dynamic Environments
July/August 1990 (vol. 10 no. 4)
pp. 26-34

The radiosity algorithm is extended to dynamic environments, providing global-illumination simulations to scenes that are modified interactively. The illumination effects introduced by a change in position, shape, or attributes of any object in the scene are computed very rapidly by redistributing the energy already exchanged between objects. Corrections are made by shooting positive and negative energy, accounting for increased illumination and the creation of shadows. Object coherence is used to minimize computation, and progressive-refinement techniques are used to accelerate convergence. The extended algorithm yields excellent approximations to the exact solutions at interactive speeds.

1. A.S. Glassner, "Spacetime Ray Tracing for Animation," CG&A, Vol. 8, No. 2, Mar. 1988. pp. 60-70.
2. D.R. Baum et al., "The Back-Buffer Algorithm: An Extension of the Radiosity Method to Dynamic Environments,"Visual Computer, Vol. 2, No. 5, Sept. 1986, pp. 298-308.
3. C. M. Goral, K. E. Torrance, D. P. Greenberg, and B. Battaile, "Modeling the interaction of light between diffuse surfaces," inProc. SIGGRAPH '84, 1984, pp. 213-222.
4. M.F. Cohen, S.E. Chen, J.R. Wallace, and D.P. Greenberg, "A progressive refinement approach to fast radiosity image generation," inProc. SIGGRAPH '88, 1988, pp. 75-84.
5. D. R. Baum, H. E. Rushmeier, and J. M. Winget, "Improving radiosity solutions through the use of analytically determined form-factors," inProc. SIGGRAPH '89, 1989, pp. 325-334.
6. M.F. Cohen et al., "An Efficient Radiosity Approach for Realistic Image Synthesis,"CG&A, Vol. 6, No. 3, Mar. 1986, pp. 26-35.
7. J. R. Wallace, K. A. Elmquist, and E. A. Haines, "A ray tracing algorithm for progressive radiosity," inProc. SIGGRAPH '89, 1989, pp. 315-324.
8. C. Puech, F. Sillion, and C. Vedel, "Improving Interaction with Radiosity-Based Lighting Simulation Programs,"Proc. Symp. Interactive 3D Graphics, Mar. 1990, ACM, N.Y., pp. 51-57.
9. T. Nishita and E. Nakamae. "Continuous Tone Representation of Three-Dimensional Objects Taking Account of Shadows and Interreflections."Computer Graphics(Proc. SIGGRAPH), Vol. 19, No. 3, July 1985, pp. 23-30.

David W. George, Francois X. Sillion, Donald P. Greenberg, "Radiosity Redistribution for Dynamic Environments," IEEE Computer Graphics and Applications, vol. 10, no. 4, pp. 26-34, July-Aug. 1990, doi:10.1109/38.56296
Usage of this product signifies your acceptance of the Terms of Use.