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Proceedings Paper

Shading with linear light sources
Author(s): Hujun Bao; Jianguo Ying; Qunsheng Peng
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Paper Abstract

A new shading model for linear light source is presented. It accounts for both diffuse reflection and specular reflection of the illuminated surface. By regarding a linear light source as a directional rectangular light source with infinitesimal width, a simple formula is derived for calculating the diffuse reflection component. The specular reflection component is represented by an integration taking Phong's specular model as the kernel and evaluated by a linear approximation. Finally, an efficient shadow detection algorithm for linear light source is proposed. The images rendered with the shading model are very photo realistic.

Paper Details

Date Published: 22 March 1996
PDF: 9 pages
Proc. SPIE 2644, Fourth International Conference on Computer-Aided Design and Computer Graphics, (22 March 1996); doi: 10.1117/12.235507
Show Author Affiliations
Hujun Bao, Zhejiang Univ. (China)
Jianguo Ying, Zhejiang Univ. (China)
Qunsheng Peng, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 2644:
Fourth International Conference on Computer-Aided Design and Computer Graphics
Shuzi Yang; Ji Zhou; Cheng-Gang Li, Editor(s)

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