What is the spectral dimensionality of illumination functions in outdoor scenes?

被引:16
|
作者
Slater, D [1 ]
Healey, G [1 ]
机构
[1] Univ Calif Irvine, Comp Vis Lab, Irvine, CA 92697 USA
来源
1998 IEEE COMPUTER SOCIETY CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, PROCEEDINGS | 1998年
关键词
D O I
10.1109/CVPR.1998.698595
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
The spectral properties of outdoor illumination functions can vary significantly due to atmospheric conditions and scene geometry. We show using a statistical analysis of a comprehensive physical model that the variation in outdoor illumination functions over both the visible range (0.33 mu m-0.7 mu m) and the visible/near-infrared range (0.4 mu m-2.5 mu m) can be represented accurately by use of seven-dimensional linear models. The physical model includes solar and scattered radiation as well as the effects of atmospheric gases and aerosols. The MODTRAN 3.5 code was employed for computing radiative transfer aspects of the model. We show that the new model has strong agreement over the visible wavelengths with the emperical study of Judd Et at [13]. We also demonstrate the accuracy of the model over the 0.4 mu m-2.5 mu m spectral range using measured outdoor illumination functions.
引用
收藏
页码:105 / 110
页数:6
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