Correlation Between LWIR And SWIR Image Of Ground Terrain

K. Wilner; R. Dombrowsky; N. Ben-Yosef

doi:10.1117/12.951042

5 July 1989 Correlation Between LWIR And SWIR Image Of Ground Terrain

K. Wilner, R. Dombrowsky, N. Ben-Yosef

Proceedings Volume 1038, 6th Mtg in Israel on Optical Engineering; (1989) https://doi.org/10.1117/12.951042
Event: Sixth Meeting of Optical Engineering in Israel, 1988, Tel Aviv, Israel

Abstract

Thermal images of natural terrain in the long wavelength infrared (LWIR) are due to thermal emittion of the ground. On the other hand in the short wavelength infrared (SWIR) images there is a contribution of direct sun light due to reflection. The daily evolution of the terrain thermal images with the same thermal properties in both spectral windows were performed using an IR imaging radiometer. The sun reflection and the thermal emmition will affect the correlation between the images. Measurements have shown that the cross correlation goes through a maxima and a minima depending on the sun angle. It seems that the maxima point occurs when the shadow effects are minimal.

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K. Wilner, R. Dombrowsky, and N. Ben-Yosef "Correlation Between LWIR And SWIR Image Of Ground Terrain", Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); https://doi.org/10.1117/12.951042

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KEYWORDS

Sun

Thermography

Long wavelength infrared

Short wave infrared radiation

Infrared imaging

Thermal modeling

Image processing

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