Physically based simulation of Buddha Glory

This paper proposes a novel method of photorealistic simulation of Buddha Glory, a natural phenomenon of great visual beauty which can be observed in the area of famous Buddhism Holy Lands in China. This phenomenon is mainly caused by back-scattering of water droplets in fog or cloud. To simulate the glory, we first calculate the spectral scatter intensity of glory rings using Mie scattering theory. We then present a new shadow model to determine the deformed shape of the head and body of "Buddha" within the glory ring.The affect of atmospheric parameters such as the solar elevation angles, the density and size of water droplet in fog or cloud on the shape and color of Buddha Glory is also calculated. For rendering, we adopt the method of path scattering integral to generate the whole attenuated scene of Buddha Glory. Compared with the photographs of real Buddha Glory displays, our synthetic results are quite satisfactory.

作 者： LIU Shiguang WANG Zhangye GONG Zheng WANG Changbo PENG Qunsheng   作者單位： LIU Shiguang,PENG Qunsheng(State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, China;Department of Mathematics, Zhejiang University, Hangzhou 310027, China)

WANG Zhangye,GONG Zheng(State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, China)

WANG Changbo(Department of Structure Engineering, Tongji University, Shanghai 200092, China) 

刊 名： 自然科學進展（英文版）  SCI 英文刊名： PROGRESS IN NATURAL SCIENCE  年，卷(期)： 2006 16(6)  分類號： N1  關(guān)鍵詞： natural phenomenon   Buddha Glory   back-scattering   physically based simulation