1995-10-13
1996-08-13
Nguyen, Phu K.
G06F 1500
Patent
active
055465153
ABSTRACT:
In the radiosity calculation, the intersection decision is effected by the ray-casting method with respect to one portion of element of the polygon interior with the use of the coherence of the dodow so as to obtain the illumination intention and the interpolation domain of the form-factor from the intersection decision results. As the radiosity calculation is effected in accordance with the algorithm that the linear, non-linear interpolation equations are properly used in accordance with the precision to use the interpolation calculation in the interior portion the interpolation domain, the intersection decision frequency is sharply reduced so that the whole processing can be effected with higher speed.
REFERENCES:
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Cohen et al., "The Hemi-Cube: A Radiosity Solution for Complex Environments", Computer Graphics (SIGGRAPH '85 Proceedings), vol. 19, No. 3, pp. 31-40 (Jul. 1985).
Immel et al., "A Radiosity Method For Non-Diffuse Environments", Computer Graphics, vol. 20, No. 4, pp.133-42 (Aug. 1980).
Trumbore et al., "A Testbed For Image Synthesis",Eurographics '91, pp. 467-480 (Sept. 1991).
Yilmaz et al., "A Hardware Algorithm For Fast Realistic Image Synthesis", Advances In Computer Graphics Hardware IV, pp. 37-60, 1991.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Phu K.
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