Title:
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Otolith shape classification for fish stock discrimination
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Author:
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Soria Pérez, José Antonio; Nasreddine, Kamal; Parisi Baradad, Vicenç; Ferrer Arnau, Luis Jorge; Benzinou, Abdesslam
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. Centre de Desenvolupament Tecnològic de Sistemes d'Adquisició Remota i Tractament de la Informació (SARTI); Universitat Politècnica de Catalunya. TIEG - Terrassa Industrial Electronics Group |
Abstract:
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The shape analysis of otoliths, which are calcified
structures in the inner ear of teleostean fishes, is known to be
particularly relevant to address species identification and stock
discrimination. Generally, scientists use classical methodologies
of statistical analysis and shape recognition such as Fourier
shape descriptors and Principal Component Analysis (PCA).
These methods are subject to several limitations mainly to their
incapacity to locate irregularities because they are based on global
characterization of shape. Recently, more advanced techniques
are proposed in this context in order to improve classification
accuracies. The first recent method exploits the potential of shape
geodesics which rely on local shape features for classification
issues. The second one addresses the Best-Basis paradigm which
combines the Wavelet Transform, and the potential of statistical
analysis in order to fully automate the selection process of efficient
features for classification. These methods have been shown to
significantly outperform the standard approaches but they are not
compared together yet. This study compare these two methods on
a real dataset. The comparison is performed on
600
striped red
mullet calcified structures collected for the NESPMAN European
project. For each method, performances are reported for the
classification of samples coming from three geographical zones
in the Northwest European seas: the Bay of Biscay, a mixing zone
composed of the Celtic Sea and the Western English Channel and
a northern zone composed of the Eastern English Channel and
the North Sea. Comparison shows that both methods lead to same
conclusions. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Reconeixement de formes -Àrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida::Zoologia -Otoliths -Image processing -Form perception -Pattern recognition systems -Accuracy -Aquaculture -Biology -Europe -Feature extraction -Robustness -Shape -Otòlits -Imatges -- Processament -- Aplicacions -Fons marins -- Investigació -Fourier, Anàlisi de |
Rights:
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Document type:
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Article - Published version Conference Object |
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