Radiosity has been used to create some of the most photorealistic computer-generated images to date. The problem, however, is that radiosity algorithms are so computationally and memory expensive that few applications can employ them successfully. Form factor calculation is the most costly part of the process. This report describes an algorithm for using the finite element method to reduce the amount of time that is used in the form factor calculation portion of the radiosity algorithm. This technique for form factor calculation significantly reduces the number of projections done at each iteration by using shape functions to determine the distribution of a form factor across he surface of a patch and thus greatly reduces total run time.
Guha, Ratan K.
Master of Science (M.S.)
College of Arts and Sciences
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Masters Thesis (Open Access)
Chesteen, Donna Marie, "Experimenting with the finite element method in the calculation of radiosity form factors" (1995). Retrospective Theses and Dissertations. 3175.