Multi- and hyperspectral scene modeling

Christoph C. Borel; Ronald F. Tuttle

doi:10.1117/12.884585

20 May 2011 Multi- and hyperspectral scene modeling

Christoph C. Borel, Ronald F. Tuttle

Proceedings Volume 8048, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVII; 80481G (2011) https://doi.org/10.1117/12.884585
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

This paper shows how to use a public domain raytracer POV-Ray (Persistence Of Vision Raytracer) to render multiand hyper-spectral scenes. The scripting environment allows automatic changing of the reflectance and transmittance parameters. The radiosity rendering mode allows accurate simulation of multiple-reflections between surfaces and also allows semi-transparent surfaces such as plant leaves. We show that POV-Ray computes occlusion accurately using a test scene with two blocks under a uniform sky. A complex scene representing a plant canopy is generated using a few lines of script. With appropriate rendering settings, shadows cast by leaves are rendered in many bands. Comparing single and multiple reflection renderings, the effect of multiple reflections is clearly visible and accounts for 25% of the overall apparent canopy reflectance in the near infrared.

Citation Download Citation

Christoph C. Borel and Ronald F. Tuttle "Multi- and hyperspectral scene modeling", Proc. SPIE 8048, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVII, 80481G (20 May 2011); https://doi.org/10.1117/12.884585

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