“An efficient radiosity solution for bump texture generation” by Chen and Wu
Conference:
Type(s):
Title:
- An efficient radiosity solution for bump texture generation
Session/Category Title: Radiosity
Presenter(s)/Author(s):
Moderator(s):
Abstract:
The development of global illumination and texture generation makes it possible to produce the most realistic images. However, it is still difficult or deficient so far to simulate bump texture effects while the interreflection of light being modeled by the present ray tracing or radiosity methods. A method of bump texture generation, being incorporated into the process of radiosity solution, is presented in the paper. The method is characterized by introduction of a perturbed radiosity map, established in the context of either progressive radiosity or standard radiosity solution. To calculate the perturbed radiosity, a concept of perturbed form-factors is proposed, and the algorithms for evaluating the perturbed form-factors are also given. As a result, a bilinear-interpolation shading scheme for perturbed surfaces is provided, and the texturing method is easily added to a newly improved solution of progressive refinement radiosity for non-diffuse environment.
References:
1. Baum, D. R., Rushmeier, H. E. and Winget, J. M., Improving Radiosity Solutions through the Use of Analytically Determined Form-Factors, Computer Graphics, Vol 23(3), 1989, pp.325-334
2. B linn, J. F. and Newell, M. E., Texture and Reflection in Computer Generated Images, Comm. ACM, Vol 19(10), 1976, pp.542-547
3. B linn, J. F., Simulation of Wrinkled Surfaces, Computer Graphics, Vol 12(3), 1978, pp.286-292
4. Cabral, B., Max, N. and Springmeye R., Bidirectional Reflection Functions from Surface Bump Maps, Computer graphics, Vol 19(4), 1987, pp.273-281
5. Carey, R. J. and Greenberg, D. P., Texture for Realistic Image Synthesis, Computer & Graphics, vol 9(2), 1985, pp.125-138
6. Catmull, E., A Subdivision Algorithm for Computer Display of Curved Surfaces, Ph.d Dissertation, Univ. of Uta, Salt Lake City, 1974
7. Chert, H. and Wu, E. H., An Adapted Solution of Progressive Radiosity and Ray Tracing Methods for Nondiffuse Environment, Proceedings of CGI’90, June 26-30, 1990
8. Cohen, M. F. and Greenberg, D. P., The Hemi-cube: A Radiosity Solution for Complex Enviromnent, Computer Graphics, Vol 19(3), 1985, pp.31-40
9. Cohen, M. F., Greenberg, D. P., Immel, D. S. and Brack, P. J., An Ef~cient Radiosity Approach for Realistic Image Synthesis, IEEE CG&A, Vol 6(2), 1986, pp.26-35
10. Cohen, M. F., Chen, S. E., Wallace, J. K. and Greenberg, D. P., A Progressive Refu~ment Approach to Fast Radiosity Image Generation, Computer Graphics, Vol 22(4), 1988, pp.75-84
11. Cook, R. L., Shade Trees, Computer Graphics, Vol 18(3), 1984, pp.223-231
12. Goral, C. M., Torrance, K. E. and Greertberg, D. P., Modelling the Interaction of Light between Diffuse Surfaces, Computer Graphics, Vol 18(3), 1984, pp.213-222
13. Immel, D. S., Cohen, M. F. and Greertberg, D. P., A Radiosi~ Method for Non-diffuse Enviromnent, Computer Graphics, Vol 20(4), 1986, 133-142
14. Max, N. L., Shadows for Bump-mapped Surfaces, Advanced Computer Graphics, Kunii T.L. Ed. Springer Verlag, Tokyo, 1986, pp.145-156
15. Perlin, K., An linage Synthesizer, Computer Graphics, Vol 19(3), 1985, pp.287-296
16. Shao, M. Z., Peng, Q. S. and Liang, Y. D., A New Radiosity Approach by Procedural Refinements for Realist& Image Synthesis, Computer Graphics, Vol 22(4), 1988, pp.93-101
17. Shao, P. P., Peng, Q. S. and Liang, Y. D., Formfactors for General Environments, Proc. Eurographits’88, Nice, 1988, pp.499-510
18. Sillion, F. and Puech, C., A General Two-pass Method Integrating Specular and Diffuse Reflection, Computer Graphics, Vol 23(3), 1989, pp.335-344
19. Sparrow, E. M. arid Cess, R. D., Radiation Heat Transfer, McGraw-Hill, New York, 1978
20. Wallace, J. R., Cohen, M. F. and Greenberg, D. P., A Two-pass Solution to the Rendering Equation: A Synthesis of Ray Tracing and Radiosity Methods, Computer Graphics, Vol 21(4), 1987, pp.311-320
21. Wallace, J. R., Elmquist, K. A. and Haines, E. A., A Ray Tracing Algorithm for Progressive Radiosity, Computer Graphics, Vol 23(3), 1989, pp.315-324
22. Ward, G. J., Rubinstein, F. M. and Clear, R. D., A Ray Tracing Solution for Diffuse lnterreflection, Computer Graphics, Vol 22(4), 1988, pp.85-92
23. Whitted, T., An Improved Illumination Model for Shaded Display, Comm. ACM, Vol 23(6), 1980, pp.343-349
