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Optical Engineering

Preprocessing of ground-based infrared sky images to obtain the true statistical behavior of the image
Author(s): Shimshon N. Lashansky; Nissim Ben-Yosef; Amotz Weitz; Eyal Agassi
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Paper Abstract

The statistical behavior of irradiance over a ground-based IR sky image is dependent on the angle of elevation at which the image was made. Images made at different elevation angles cannot be compared unless a correction is made for the different viewing angles. The angle-dependent radiance caused by the difference in the optical path length over the field of view of the image must also be corrected, otherwise incorrect conclusions will result. Once the corrections have been made, the image can be analyzed and the true statistical parameters of the image can be obtained.

Paper Details

Date Published: 1 December 1991
PDF: 5 pages
Opt. Eng. 30(12) doi: 10.1117/12.56010
Published in: Optical Engineering Volume 30, Issue 12
Show Author Affiliations
Shimshon N. Lashansky
Nissim Ben-Yosef, Hebrew Univ. (Israel)
Amotz Weitz, Hebrew Univ. of Jerusalem (Israel)
Eyal Agassi, Israel Military Industries (Israel)

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