A Rendering Algorithm for Discrete Volume Density Objects
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Date
1993
Journal Title
Journal ISSN
Volume Title
Publisher
Blackwell Science Ltd and the Eurographics Association
Abstract
We present a new algorithm for simulating the effect of light travelling through volume objects. Such objects (haze, fog, clouds.) are usually modelized by voxel grids which define their density distribution in a discrete tridimensional space. The method we propose is a two-pass Monte-Carlo ray-tracing algorithm that does not make any restrictive assumptions neither about the characteristics of the objects (both arbitrary density distributions and phase functions are allowed) nor about the physical phenomena included in the rendering process (multiple scattering is accounted for). The driving idea of the algorithm is to use the phase function for Monte-Carlo sampling, in order to modify the direction of the ray during scattering.
Description
@article{10.1111:1467-8659.1230201,
journal = {Computer Graphics Forum},
title = {{A Rendering Algorithm for Discrete Volume Density Objects}},
author = {Blasi, Philippe and Le Saec, Bertrand and Schlick, Christophe},
year = {1993},
publisher = {Blackwell Science Ltd and the Eurographics Association},
ISSN = {1467-8659},
DOI = {10.1111/1467-8659.1230201}
}