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Proceedings Paper

Turbulence degradation and mitigation performance for handheld weapon ID
Author(s): Richard L. Espinola; Sameer Aghera; Roger Thompson; Jason Miller
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Paper Abstract

Atmospheric turbulence can severely limit the range performance of state-of-the-art large aperture imaging sensor systems, specifically those intended for long range ground to ground target identification. Simple and cost-effective mitigation solutions which operate in real-time are desired. Software-based post-processing techniques are attractive as they lend themselves to easy implementation and integration into the back-end of existing sensor systems. Recently, various post-processing algorithms to mitigate turbulence have been developed and implemented in real-time hardware. To determine their utility in Army-relevant tactical scenarios, an assessment of the impact of the post processing on observer performance is required. In this paper, we test a set of representative turbulence mitigation algorithms on field collected data of human targets carrying various handheld objects in varying turbulence conditions. We use a controlled human perception test to assess handheld weapon identification performance before and after turbulence mitigation post-processing. In addition, novel image analysis tools are implemented to estimate turbulence strength from the scene. Results of this assessment will lead to recommendations on cost-effective turbulence mitigation strategies suitable for future sensor systems.

Paper Details

Date Published: 18 May 2012
PDF: 12 pages
Proc. SPIE 8355, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIII, 83550S (18 May 2012); doi: 10.1117/12.919874
Show Author Affiliations
Richard L. Espinola, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Sameer Aghera, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Roger Thompson, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Jason Miller, U.S. Army Night Vision & Electronic Sensors Directorate (United States)


Published in SPIE Proceedings Vol. 8355:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXIII
Gerald C. Holst; Keith A. Krapels, Editor(s)

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