Comparison of speckle reduction techniques on the identification of human activities in laser range-gated SWIR imaging

David Oxford; Richard L Espinola

doi:10.1117/12.850735

22 April 2010 Comparison of speckle reduction techniques on the identification of human activities in laser range-gated SWIR imaging

David Oxford, Richard L Espinola

Author Affiliations +

Proceedings Volume 7662, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXI; 766206 (2010) https://doi.org/10.1117/12.850735
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Active imaging systems, including laser range-gated short wave infrared (LRG SWIR) systems, are currently being developed to increase the identification range performance of ground-to-ground electro-optical targeting systems. These systems have several distinct technological and practical advantages over passive systems, but they also suffer from peculiar phenomena, including laser speckle. This paper reports on a study in which the benefits of speckle reduction techniques on the ability of observers to identify human activities were determined empirically. Since no suitable LRG SWIR imagery existed, it was necessary to first develop a simulation of speckle formation in a typical LRG SWIR imager, which also included the chosen speckle reduction techniques. The simulation was then applied to a human activities target set and the resulting imagery evaluated in a perception experiment.

Citation Download Citation

David Oxford and Richard L Espinola "Comparison of speckle reduction techniques on the identification of human activities in laser range-gated SWIR imaging", Proc. SPIE 7662, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXI, 766206 (22 April 2010); https://doi.org/10.1117/12.850735

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