www.uhasselt.be
DSpace

Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/6257

Title: A ray density estimation approach to take into account environment illumination in plant growth simulation
Authors: VAN HAEVRE, William
DI FIORE, Fabian
BEKAERT, Philippe
VAN REETH, Frank
Issue Date: 2004
Publisher: ACM
Citation: Proceedings of Spring Conference on Computer Graphics (SCCG2004), Budmerice, April 22-24, 2004. p. 121-131.
Abstract: Light interaction is one of the most important factors in developing realistic plant models. Plants react to received illumination by bending branches, adapting their growth rate, orienting leaves and flowers, producing larger or smaller leaves, etc. In this paper, we present a novel approach to simulate plant growth as a response to environment illumination. The basic idea of our algorithm is to simulate light transport in the environment in which plants grow by tracing light particles originating from light sources. Both intensity and mean direction of incident illumination are determined easily. This is based on a ray density estimation of the environment illumination by means of a predominant illumination direction. An adaptive spatial data structure is used to store the rays along which light particles travel in space. This data structure allows efficient calculation of ray density at locations where the algorithm needs to query incident illumination. Our approach takes into account both direct and indirect illumination and is an algorithm that is both flexible and accurate. It is easy to implement and more general illumination models can be incorporated in a straightforward manner. Furthermore, using a non-uniform, adaptive data structure for storing the rays, calculation time and storage requirements are kept within reasonable limits.
URI: http://hdl.handle.net/1942/6257
Link to publication: http://doi.acm.org/10.1145/1037210.1037229
ISBN: 1-58113-967-5
Category: C1
Type: Proceedings Paper
Appears in Collections: Research publications

Files in This Item:

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.