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Title:
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A new otolith image contour descriptor based on partial reflection
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Author:
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Reig Bolano, Ramon; Marti Puig, Pere; Lombarte, A.; Soria Pérez, José Antonio; Parisi Baradad, Vicenç
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. AHA - Arquitectures Hardware Avançades |
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Abstract:
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In this paper we propose a new contour
descriptor for reconstructing fish otolith contours that
uses half the number of coefficients needed by the
classical elliptical Fourier descriptors (EFDs) for the
same accuracy. The efficiency of the proposed shape
descriptor has been tested with two different species,
Liza aurata and Liza ramada, belonging to the family
Mugilidae (http://aforo.cmima.csic.es), and two populations
(from the USA and Canada) of the family
Merlucciidae. These groups are characterized by high
similarity between species; therefore, accurate, detailed
shape analyses of their otoliths can help to identify and
discriminate morphologically close species or different
populations. For comparative purposes the descriptor
was also tested with specimens of Mullus barbatus
(Family Mullidae). For a certain number of coefficients
(<50) the new descriptor clearly outperforms the
reconstruction accuracy of the EFD. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo
-Otoliths
-Image processing
-Form perception
-Otòlits
-Imatges -- Processament -- Aplicacions
-Fons marins -- Investigació
-Fourier, Anàlisi de |
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Rights:
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Document type:
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Article - Published version
Article |
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