Airborne lidar imaging of salmon.
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.
Churnside
James H
JH
National Oceanic and Atmospheric Administration's Environmental Technology Laboratory, 325 Broadway, Boulder, Colorado 80305, USA. james.h.churnside@noaa.gov
Wilson
James J
JJ