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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Automatic detection, tracking and counting of birds in marine video content T'Jampens, R.; Hernandez, F.; Vandecasteele, F.; Verstockt, S. (2016). Automatic detection, tracking and counting of birds in marine video content, in: López, M.B. et al. IPTA 2016: 6th International Conference on Image Processing Theory, Tools and Applications, Oulu, Finland, December 2016. International Conference on Image Processing Theory Tools and Applications, 6: pp. [1-6]. https://dx.doi.org/10.1109/IPTA.2016.7821031 In: López, M.B. et al. (Ed.) (2016). IPTA 2016: 6th International Conference on Image Processing Theory, Tools and Applications, Oulu, Finland, December 2016. International Conference on Image Processing Theory Tools and Applications, 6. IEEE: New York. ISBN 978-1-4673-8910-5. , meer In: International Conference on Image Processing Theory Tools and Applications. IEEE: New York. ISSN 2154-512X, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 297427 [ download pdf ]
Documenttype: Congresbijdrage

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Trefwoorden

Aquatic organisms > Marine organisms > Aquatic birds > Marine birds Detection Aves [WoRMS] Marien/Kust

Author keywords

dynamic background subtraction; texture analysis; image classification; object detection; seabirds

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Auteurs		Top
T'Jampens, R., meer Hernandez, F., meer Vandecasteele, F., meer Verstockt, S., meer

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Abstract

Robust automatic detection of moving objects in a marine context is a multi-faceted problem due to the complexity of the observed scene. The dynamic nature of the sea caused by waves, boat wakes, and weather conditions poses huge challenges for the development of a stable background model. Moreover, camera motion, reflections, lightning and illumination changes may contribute to false detections. Dynamic background subtraction (DBGS) is widely considered as a solution to tackle this issue in the scope of vessel detection for maritime traffic analysis. In this paper, the DBGS techniques suggested for ships are investigated and optimized for the monitoring and tracking of birds in marine video content. In addition to background subtraction, foreground candidates are filtered by a classifier based on their feature descriptors in order to remove non-bird objects. Different types of classifiers have been evaluated and results on a ground truth labeled dataset of challenging video fragments show similar levels of precision and recall of about 95% for the best performing classifier. The remaining foreground items are counted and birds are tracked along the video sequence using spatio-temporal motion prediction. This allows marine scientists to study the presence and behavior of birds.

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