Form Factor Calculation: a New Expression with Implementations on a Parallel T.Node Computer

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Date
1993
Journal Title
Journal ISSN
Volume Title
Publisher
Blackwell Science Ltd and the Eurographics Association
Abstract
The radiosity technique uses the heat transfer theory to define a view-independent illumination model. For complex scenes, calculation of this model is very time-intensive, due largely to the determination of a geometric factor, defined with a double area integral, and named form factor. This paper presents a new expression of the form factor, which can be reformulated, in a computationally more efficient manner, as a simple line integral for planar polygonal convex surfaces that are perfectly diffuse.Recently, parallel computers have been used to decrease calculation time. Previous work is focused mainly on distributed implementations of a method, the progressive refinement method, widely used for complex environments. The T.Node is a completely reconfigurable MIMD machine, based on the transputer chip. In this paper, we compare a parallel implementation of the progressive refinement method with a direct method which takes into account the memory capabilities of this kind of machine.
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@article{
10.1111:1467-8659.1230421
, journal = {Computer Graphics Forum}, title = {{
Form Factor Calculation: a New Expression with Implementations on a Parallel T.Node Computer
}}, author = {
Michelin, Sylvain
and
Maffeis, Gualtiero
and
Arques, Didier
and
Grossetie, Jean Claude
}, year = {
1993
}, publisher = {
Blackwell Science Ltd and the Eurographics Association
}, ISSN = {
1467-8659
}, DOI = {
10.1111/1467-8659.1230421
} }
Citation