Thermal imaging atmospheric effects amd image restoration

Dan Sadot; Norman S. Kopeika

doi:10.1117/12.185847

14 September 1994 Thermal imaging atmospheric effects and image restoration

Dan Sadot, Norman S. Kopeika

Proceedings Volume 2268, Infrared Spaceborne Remote Sensing II; (1994) https://doi.org/10.1117/12.185847
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

In this paper, a general and inclusive framework for understanding and characterizing the atmospheric effects in the thermal infrared in imaging systems is presented. This includes separation of the atmospheric distortions to their main two ingredients: optical turbulence, and scattering and absorption by atmospheric particulates. A basic and correct understanding of those effects enables the development of prediction models for the atmospheric turbulence and aerosol MTFs. Here, both models are implemented for real-time thermal image restoration, with the prior knowledge of standard meteorological parameters, and specifications of the imaging system. Examples of such restorations are presented and the uniqueness of the restoration method is discussed with the inclusion of atmospheric degradation of the received image with and without subsequent image restoration. The most important conclusion is that knowledge of the expected atmospheric MTF is crucial for the system designer.

Citation Download Citation

Dan Sadot and Norman S. Kopeika "Thermal imaging atmospheric effects and image restoration", Proc. SPIE 2268, Infrared Spaceborne Remote Sensing II, (14 September 1994); https://doi.org/10.1117/12.185847

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KEYWORDS

Modulation transfer functions

Atmospheric particles

Spatial frequencies

Imaging systems

Atmospheric modeling

Aerosols

Image restoration

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