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analyse numérique

Aquatic Living Resources (1)

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1 results

Numerical analysis of scale morphology to discriminate betweenatlantic salmon stocks
Hélène de Pontual, Patrick Prouzet
Journal:

Aquatic Living Resources / Volume 1 / Issue 1 / January 1988

Published online by Cambridge University Press:

15 January 1988, pp. 17-27

Print publication:

January 1988
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The use of an image analysis microsystem with a specially developed software enabled scale image processing, outline extraction and computation of features which are not available in the conventional approach of scale analysis. Those parameters (shape factors, moment invariants and elliptic Fourier coefficients) were introduced into a discriminant analysis process to test their usefulness in stock identification. The method was applied to European stocks originating from Norway (Etne river) and France (Elorn river). The low misclassification rate obtained indicates that this approach is particularly promising.