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Optical Engineering • Open Access

Protection performance evaluation regarding imaging sensors hardened against laser dazzling
Author(s): Gunnar Ritt; Michael Koerber; Daniel Forster; Bernd Eberle

Paper Abstract

Electro-optical imaging sensors are widely distributed and used for many different purposes, including civil security and military operations. However, laser irradiation can easily disturb their operational capability. Thus, an adequate protection mechanism for electro-optical sensors against dazzling and damaging is highly desirable. Different protection technologies exist now, but none of them satisfies the operational requirements without any constraints. In order to evaluate the performance of various laser protection measures, we present two different approaches based on triangle orientation discrimination on the one hand and structural similarity on the other hand. For both approaches, image analysis algorithms are applied to images taken of a standard test scene with triangular test patterns which is superimposed by dazzling laser light of various irradiance levels. The evaluation methods are applied to three different sensors: a standard complementary metal oxide semiconductor camera, a high dynamic range camera with a nonlinear response curve, and a sensor hardened against laser dazzling.

Paper Details

Date Published: 8 May 2015
PDF: 9 pages
Opt. Eng. 54(5) 053106 doi: 10.1117/1.OE.54.5.053106
Published in: Optical Engineering Volume 54, Issue 5
Show Author Affiliations
Gunnar Ritt, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Michael Koerber, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
Daniel Forster, Wehrtechnische Dienststelle für Waffen und Munition (Germany)
Bernd Eberle, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)

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