Technique for measuring atmospheric effects on image metrics

Samuel B. Crow; Wendell R. Watkins; Fernando R. Palacios; Daniel R. Billingsley

doi:10.1117/12.45777

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1 July 1991 Technique for measuring atmospheric effects on image metrics

Samuel B. Crow, Wendell R. Watkins, Fernando R. Palacios, Daniel R. Billingsley

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Proceedings Volume 1486, Characterization, Propagation, and Simulation of Sources and Backgrounds; (1991) https://doi.org/10.1117/12.45777
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

A technique is presented for measuring atmospheric effects on image metrics by comparing infrared images simultaneously collected from positions close to and far away from a target. An image acquired close to the target provides a measure of the radiance inherent to the target and its background, while an image acquired far from the target provides a measure of the radiance after propagation through the atmosphere. Therefore, changes in radiance can be separated into those due to the change in the inherent radiance and those due to the propagation of the inherent radiance through the atmosphere. A 'complexity metric' is used to quantify the effects of environmental and atmospheric changes on target-to-background contrast. Examples of the effects of cloud cover, wind speed, dust clouds and optical turbulence on the complexity metric are presented.

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Samuel B. Crow, Wendell R. Watkins, Fernando R. Palacios, and Daniel R. Billingsley "Technique for measuring atmospheric effects on image metrics", Proc. SPIE 1486, Characterization, Propagation, and Simulation of Sources and Backgrounds, (1 July 1991); https://doi.org/10.1117/12.45777

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