WHOI silhouette DIGITIZER version 1.0 user’s guide
WHOI silhouette DIGITIZER version 1.0 user’s guide
Date
2003-07
Authors
Little, William S.
Copley, Nancy J.
Copley, Nancy J.
Linked Authors
Alternative Title
Citable URI
As Published
Date Created
Location
DOI
10.1575/1912/62
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Keywords
Zooplankton length
Biomass estimate
Software
Biomass estimate
Software
Abstract
WHOI Silhouette DIGITIZER is a MATLAB-based computer program for measuring the lengths of
marine organisms in the macrozooplankton size range. DIGITIZER displays a scanned
photographic image of a seawater slurry containing large numbers of marine organisms, upon
which is superimposed a reference grid. DIGITIZER then allows you to measure the organisms'
lengths using the cursor on the computer screen. DIGITIZER automatically calculates each
organism’s biomass and generates spreadsheet compatible output listings of basic statistics
derived from the data. DIGITIZER also produces text files of lengths, weights, and size-frequency
histograms.