A chum scale pattern analyzer and stock identification based on scale patterns by discriminant function and power spectrum analysis

Author

Watarai, Osamu ; Igarashi, Mitsuru

Author_Institution

Dept. of Ocean Eng., Tokai Univ., Japan

Volume

17

Issue

3

fYear

1992

fDate

7/1/1992 12:00:00 AM

Firstpage

280

Lastpage

287

Abstract

An optoelectronic instrument has been developed to analyze the scales and scale patterns of chum salmon. This device, with specially developed software, has been used to study populations of salmon. Fish from two different rivers approximately 200 km apart from each other were grouped with an accuracy of 82% or more. Machine-measured ages coincided with those derived from visual estimation in approximately 80% of the fish sampled. These results suggest the proposed system could be of practical use for measuring and analyzing the scale patterns that allow one to accurately measure both natural and farmed populations of salmon

Keywords

aquaculture; biology computing; computerised instrumentation; computerised picture processing; spectral analysers; CCD image sensor; ages; chum salmon; chum scale pattern analyzer; discriminant function; optoelectronic instrument; populations; power spectrum analysis; stock identification; video camera; Cameras; Displays; Hard disks; Hardware; Instruments; Marine animals; Microscopy; Pattern analysis; Rivers; Sea measurements;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.153444

Filename

153444