Open AccessAirborne lidar imaging of salmon
Author(s) -
James H. Churnside,
James J. Wilson
Publication year - 2004
Publication title -
applied optics
Language(s) - English
Resource type - Journals
ISSN - 0003-6935
DOI - 10.1364/ao.43.001416
Subject(s) - lidar , optics , remote sensing , image processing , laser , filter (signal processing) , noise (video) , stray light , physics , computer science , geology , computer vision , image (mathematics)
Lidar images of adult salmon are presented. The lidar system is built around a pulsed green laser and a gated intensified CCD camera. The camera gating is timed to collect light scattered from the turbid water below the fish to produce shadows in the images. Image processing increases the estimated contrast-to-noise ratio from 3.4 in the original image to 16.4 by means of a matched filter.
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