12 April 2004 New model for realistic IR image rendering of city buildings
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Proceedings Volume 5405, Thermosense XXVI; (2004); doi: 10.1117/12.547419
Event: Defense and Security, 2004, Orlando, Florida, United States
Abstract
A new model for realistic IR image rendering of city buildings was proposed in this paper. Within the model, We first analyzed the main kinds of factors affecting the infrared characteristic of city buildings such as air temperature, relative humidity, wind speed, sun and sky radiations. Then we established an energy equation based on principle of energy equilibrium for the surface parts of city building scene and by adopting multi-layer infinite difference method and Gauss-Seidier’s iterative method, the surface temperatures of building scene under various conditions were acquired. To make the IR scene more realistic, we proposed a new method to obtain IR texture from its corresponding visible image based on the spectral correlation and the thermal attribute of the classified materials in scene. Using Ray tracing to determine IR shadow area and render the IR scene of city building with high-reality. To simulate the attenuated and blurred effect of atmosphere, we propose an IR attenuation imaging model. Finally, various IR images of city buildings at different time in a day and at different detected distance are realistically rendered based on our model.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhangye Wang, Zhaoyi Jiang, Shiguang Liu, Qunsheng Peng, "New model for realistic IR image rendering of city buildings", Proc. SPIE 5405, Thermosense XXVI, (12 April 2004); doi: 10.1117/12.547419; https://doi.org/10.1117/12.547419
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KEYWORDS
Thermography

Infrared imaging

Infrared radiation

Buildings

Atmospheric modeling

Sun

Ray tracing

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