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.
Description
@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}
}