Publications des scientifiques de l'IRD

Fablet Ronan, Gay P., Peraltilla S., Pena C., Castillo R., Bertrand Arnaud. (2012). Bags-of-Features for fish school cluster characterization in pelagic ecosystems : application to the discrimination of juvenile and adult anchovy (Engraulis ringens) clusters off Peru. Canadian Journal of Fisheries and Aquatic Sciences, 69 (8), p. 1329-1339. ISSN 0706-652X.

Titre du document
Bags-of-Features for fish school cluster characterization in pelagic ecosystems : application to the discrimination of juvenile and adult anchovy (Engraulis ringens) clusters off Peru
Année de publication
2012
Type de document
Article référencé dans le Web of Science WOS:000307022700009
Auteurs
Fablet Ronan, Gay P., Peraltilla S., Pena C., Castillo R., Bertrand Arnaud
Source
Canadian Journal of Fisheries and Aquatic Sciences, 2012, 69 (8), p. 1329-1339 ISSN 0706-652X
Whereas fisheries acoustics data processing mainly focused on the detection, characterization, and recognition of individual fish schools, here we addressed the characterization and discrimination of fish school clusters. The proposed scheme relied on the application of the Bags-of-Features (BoF) approach to acoustic echograms. This approach is widely exploited for pattern recognition issues and naturally applies here, considering fish schools as the relevant elementary objects. It relies on the extraction and categorization of fish schools in fisheries acoustic data. Echogram descriptors were computed per unit echogram length as the numbers of schools in different school categories. We applied this approach to the discrimination of juvenile and adult anchovy (Engraulis ringens) off Peru. Whereas the discrimination of individual schools is low (below 70%), the proposed BoF scheme achieved between 89% and 92% of correct classification of juvenile and adult echograms for different survey data sets and significantly outperformed classical school-based echogram characteristics (about 10% of improvement of the correct classification rate). We further illustrate the potential of the proposed scheme for the estimation of the spatial distribution of juvenile and adult anchovy populations.
Plan de classement
Ecologie, systèmes aquatiques [036] ; Ressources halieutiques [040]
Localisation
Fonds IRD [F B010057141]
Identifiant IRD
fdi:010057141
Contact