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Proceedings Paper

Ground And Aerial Use Of An Infrared Video Camera With A Mid-Infrared Filter (1.45 To 2.0 um)
Author(s): J. H. Everitt; M. A. Hussey; C. H. Blazquez; D. E. Escobar; P. R. Nixon
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Paper Abstract

A black-and-white infrared (0.9 to 2.2 μm) video camera, filtered to record radiation within the 1.45 to 2.0 μm mid-infrared water absorption region, was evaluated with ground and aerial studies. Imagery of single leaves of seven plant species (four succulent; three nonsucculent) showed that succulent leaves were easily distinguishable from nonsucculent leaves. Spectrophotometric leaf reflectance measurements made over the 1.45 to 2.0 μm confirmed the imagery results. Ground-based video recordings also showed that severely drought-stressed buffelgrass (Cenchrus ciliaris L.) plants were distinguishable from the nonstressed and moderately stressed plants. Moreover, the camera provided airborne imagery that clearly differentiated between irrigated and nonirrigated grass plots. Due to the lower radiation intensity in the mid-infrared spectral region and the low sensitivity response of the camera's tube, these video images were not as sharp as those obtained by visible or visible/near-infrared sensitive video cameras. Nevertheless, our results showed that a video camera with mid-infrared sensitivity has potential for use in remote sensing research and applications.

Paper Details

Date Published: 5 August 1986
PDF: 6 pages
Proc. SPIE 0636, Thermal Imaging, (5 August 1986); doi: 10.1117/12.964209
Show Author Affiliations
J. H. Everitt, USDA, Agricultural Research Service (United States)
M. A. Hussey, Texas A&M Agricultural Experiment Station (United States)
C. H. Blazquez, University of Florida Agricultural Research and Education Center (United States)
D. E. Escobar, USDA, Agricultural Research Service (United States)
P. R. Nixon, USDA, Agricultural Research Service (United States)

Published in SPIE Proceedings Vol. 0636:
Thermal Imaging
Irving R. Abel, Editor(s)

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