Thermal shadow modeling within a physically-based scene simulation

J. Michael Cathcart

doi:10.1117/12.151047

13 August 1993 Thermal shadow modeling within a physically-based scene simulation

J. Michael Cathcart

Proceedings Volume 1967, Characterization, Propagation, and Simulation of Sources and Backgrounds III; (1993) https://doi.org/10.1117/12.151047
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

The Electro-Optics & Physical Sciences Laboratory of the Georgia Tech Research Institute (GTRI) continues to develop a physically-based scene simulation in support of a variety of applications including human factors studies and electro-optical system analyses. Accurate simulation of a scene requires the reproduction of the scene component shadows onto the simulated landscape. Scene simulation in the mid- and far-infrared wavebands provides a particularly difficult challenge due to the inherent long-term time dependence of the thermal interactions which define the heat flows in the scene. This paper will address an approach investigated at GTRI for implementing a shadowing algorithm within the GTVISIT scene simulation software. The paper will discuss the algorithms devised for computing signatures for shadow regions and subsequent rendering of those regions on the background. Example imagery illustrating the results of the algorithms will be shown.

Citation Download Citation

J. Michael Cathcart "Thermal shadow modeling within a physically-based scene simulation", Proc. SPIE 1967, Characterization, Propagation, and Simulation of Sources and Backgrounds III, (13 August 1993); https://doi.org/10.1117/12.151047

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