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Proceedings Paper

High dynamic range hyperspectral imaging for camouflage performance test and evaluation
Author(s): D. Pearce; J. Feenan
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Paper Abstract

This paper demonstrates the use of high dynamic range processing applied to the specific technique of hyper-spectral imaging with linescan spectrometers. The technique provides an improvement in signal to noise for reflectance estimation. This is demonstrated for field measurements of rural imagery collected from a ground-based linescan spectrometer of rural scenes. Once fully developed, the specific application is expected to improve the colour estimation approaches and consequently the test and evaluation accuracy of camouflage performance tests. Data are presented on both field and laboratory experiments that have been used to evaluate the improvements granted by the adoption of high dynamic range data acquisition in the field of hyperspectral imaging. High dynamic ranging imaging is well suited to the hyperspectral domain due to the large variation in solar irradiance across the visible and short wave infra-red (SWIR) spectrum coupled with the wavelength dependence of the nominal silicon detector response. Under field measurement conditions it is generally impractical to provide artificial illumination; consequently, an adaptation of the hyperspectral imaging and re ectance estimation process has been developed to accommodate the solar spectrum. This is shown to improve the signal to noise ratio for the re ectance estimation process of scene materials in the 400-500 nm and 700-900 nm regions.

Paper Details

Date Published: 30 November 2016
PDF: 10 pages
Proc. SPIE 9997, Target and Background Signatures II, 99970F (30 November 2016); doi: 10.1117/12.2240878
Show Author Affiliations
D. Pearce, QinetiQ Ltd. (United Kingdom)
J. Feenan, QinetiQ Ltd. (United Kingdom)

Published in SPIE Proceedings Vol. 9997:
Target and Background Signatures II
Karin U. Stein; Ric H. M. A. Schleijpen, Editor(s)

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