Exploració per tema "Otòlits"
Ara es mostren els items 1-10 de 10
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A new otolith image contour descriptor based on partial reflection
(2010-12)
Article
Accés restringit per política de l'editorialIn 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. ... -
Automated taxon identification of teleost fishes using an otolith online database-AFORO
(2010-06)
Article
Accés restringit per política de l'editorialAutomated Taxon Identification (ATI) systems that use a database to identify species or anatomical structures of species from different taxonomical groups have recently been developed. However, few of these works have ... -
Best-basis development towards the automatical detection of otolith irregularities in fishes
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe application of feature extraction methodologies and the detection of patterns in sagitae otoliths, which are calcified structures in the inner ear of teleostean fishes, has lead to great knowledge of marine biology ... -
Density Local Discriminant Bases for the analysis of otolith morphology in fish identification applications
(Centre de Publicacions del Campus Nord SCCL (CPET), 2010)
Text en actes de congrés
Accés obert -
Efficient representation of contours using splines implemented with FIR filters
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe interpolation of contour pixels, with splines, of an order greater than or equal to two, usually causes oscillations that do not fit the original shape. To overcome this we propose using a least squares filter before ... -
Feature selection for analyzing and retrieving fish otoliths using elliptic Fourier descriptors of shapes
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper analyzes the characteristics of an experimental otolith retrieval system based on image contours described with Elliptical Fourier Descriptors (EFD). Otoliths are found in the inner ear of fish. Their shape ... -
On the automatic detection of otolith features for fish species identification and their age estimation
(Universitat Politècnica de Catalunya, 2013-01-21)
Tesi
Accés obertThis thesis deals with the automatic detection of features in signals, either extracted from photographs or captured by means of electronic sensors, and its possible application in the detection of morphological structures ... -
Otolith shape classification for fish stock discrimination
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe 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 ... -
Otoliths identifiers using image contours EFD
(Springer Berlín / Heidelberg, 2010-09)
Article
Accés restringit per política de l'editorialIn this paper we analyze the characteristics of an experimental otolith identification system based on image contours described with Elliptical Fourier Descriptors (EFD). Otoliths are found in the inner ear of fishes. ... -
Els Primers otolits fòssils descoberts a Catalunya
([s.n.], 1922)
Llibre
Accés obert