Preprocessing of ground-based infrared sky images to obtain the true statistical behavior of the image

Shimshon N. Lashansky; Nissim Ben-Yosef; Amotz Weitz; Eyal Agassi

doi:10.1117/12.56010

1 December 1991 Preprocessing of ground-based infrared sky images to obtain the true statistical behavior of the image

Shimshon N. Lashansky, Nissim Ben-Yosef, Amotz Weitz, Eyal Agassi

Author Affiliations +

Optical Engineering, Vol. 30, Issue 12, (December 1991). https://doi.org/10.1117/12.56010

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.

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Shimshon N. Lashansky, Nissim Ben-Yosef, Amotz Weitz, and Eyal Agassi "Preprocessing of ground-based infrared sky images to obtain the true statistical behavior of the image," Optical Engineering 30(12), (1 December 1991). https://doi.org/10.1117/12.56010

Published: 1 December 1991

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