Efficiently simulating scattering of light by leaves

被引：26

作者：

Baranoski G.V.G. ^{[1
]}

Rokne J.G. ^{[2
]}

机构：

[1] Department of Computer Science, University of Waterloo

[2] Department of Computer Science, The University of Calgary

来源：

Visual Computer | 2001年 / 17卷 / 08期

关键词：

Biological imaging; Biologically based rendering; Natural phenomena; Scattering model;

D O I：

10.1007/s003710100126

中图分类号：

学科分类号：

摘要：

Rendering techniques currently used in computer graphics enable the generation of very realistic images for a wide range of materials. Despite the latest achievements in this field, however, there are still areas, such as biological imaging, open for further investigation. In this paper an efficient approach for simulating light scattering by leaves is presented. It consists of pre-computing reflectance and transmittance values and applying a simplified scattering model for foliar tissues. This model accounts for the main biological characteristics of these organic materials, while avoiding undue complexity in order to increase the efficiency of the light scattering simulations. Its design and formulation are based on standard Monte Carlo methods, and it can be incorporated into global illumination systems without a significant computational overhead. The accuracy and performance of the proposed scattering model are examined through comparisons with a more detailed biologically based model whose spectral readings have been verified against experimental data for real specimens.

引用

页码：491 / 505

页数：14

共 51 条

[1] Allen W.A., Gausman H.W., Richardson A.J., Thomas J.R., Interaction of isotropic light with a compact plant leaf, J Opt Soc Am, 59, 10, pp. 1376-1379, (1969)
[2] Baranoski G.V.G., Biologically and physically-based rendering of natural scenes, (1998)
[3] Baranoski G.V.G., Rokne J.G., An algorithmic reflectance and transmittance model for plant tissue, Comput Graph Forum (EUROGRAPHICS Proceedings), 16, 3, pp. 141-150, (1997)
[4] Baranoski G.V.G., Rokne J.G., A simplified model for light interaction with plant tissue, Proceedings of the Eighth International Conference on Computer Graphics and Visualization - GraphiCon'98, pp. 154-161, (1998)
[5] Baranoski G.V.G., Rokne J.G., A nondeterministic reconstruction approach for isotropic reflectances and transmittances, J Visualization Comput Anim, 10, 4, pp. 225-231, (1999)
[6] Baranoski G.V.G., Rokne J.G., Xu G., Virtual spectrophotometric measurements for biologically and physically based rendering, Visual Comput, (2001)
[7] Blinn J.F., Simulation of wrinkled surfaces, Comput Graph (SIGGRAPH Proceedings), 12, 3, pp. 286-292, (1977)
[8] Bloomenthal J., Modeling the mighty maple, Comput Graph (SIGGRAPH Proceedings), 19, 3, pp. 305-311, (1985)
[9] Bloomenthal J., Skeletal design of natural forms, (1995)
[10] Bone R.A., Lee D.W., Norman J.M., Epidermal cells functioning as lenses in leaves of tropical rain-forest shade plants, Appl Opt, 24, 10, pp. 1408-1412, (1985)

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