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Proceedings Paper

Spectropolarimetric imaging for object recognition
Author(s): Louis J. Denes; Milton S. Gottlieb; Boris Kaminsky; Daniel F. Huber
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Paper Abstract

We have built an all-electronic spectro-polarimetric imaging camera utilizing an acousto-optic tunable filter and a liquid crystal variable retardation plate. This combination of rapidly adjustable parameters allows operations at 30/sec. frame rate, and near real time adaptability to changing target signatures. The spectral capability of the AOTF permits us to apply simultaneous, multiple wavelength filtering which greatly increases selectivity. Electronically agile polarization analysis adds a valuable signature feature for many scenarios. The adjustable retardation gives the capability to analyze and display not only linear polarization, but more generally, elliptical polarization as well. We have developed background suppression algorithms based on spectral and polarization signatures so that a wide variety of targets may be displayed with greatly enhanced contrast.

Paper Details

Date Published: 1 March 1998
PDF: 11 pages
Proc. SPIE 3240, 26th AIPR Workshop: Exploiting New Image Sources and Sensors, (1 March 1998); doi: 10.1117/12.300052
Show Author Affiliations
Louis J. Denes, Carnegie Mellon Research Institute (United States)
Milton S. Gottlieb, Carnegie Mellon Research Institute (United States)
Boris Kaminsky, Carnegie Mellon Research Institute (United States)
Daniel F. Huber, Carnegie Mellon Univ. (United States)

Published in SPIE Proceedings Vol. 3240:
26th AIPR Workshop: Exploiting New Image Sources and Sensors
J. Michael Selander, Editor(s)

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