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Proceedings Paper

Field calibration of reflective imagery of targets and backgrounds
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Paper Abstract

This paper describes a simple but powerful method for calibrating the apparent broadband flux reflectance of target and background materials in short wave infrared (SWIR) imagery in the field, a method that can also be used in other reflective bands. The method is analogous to the approach of field calibration of thermal IR (infrared) imagery in which thermally regulated emissive references are positioned in a peripheral region of the sensor FOV to provide apparent temperature versus image grayscale. The principle difference between the emissive TIR approach and the reflective approach described here is that passive, well calibrated reflective references are used for the SWIR and do not require active emission of in-band radiation. This approach was recently used in a field collection using a high quality, well characterized broadband SWIR imager. Theory, analysis, and results are presented here.

Paper Details

Date Published: 27 April 2010
PDF: 9 pages
Proc. SPIE 7662, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXI, 76620Y (27 April 2010); doi: 10.1117/12.851014
Show Author Affiliations
Van A. Hodgkin, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Evelyn J. Boettcher, DCS Corp. (United States)
David D. Acton, Raytheon Vision Systems (United States)

Published in SPIE Proceedings Vol. 7662:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XXI
Gerald C. Holst; Keith A. Krapels, Editor(s)

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