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Sensors 2009, 9(11), 8438-8455; doi:10.3390/s91108438
Article

A Novel Morphometry-Based Protocol of Automated Video-Image Analysis for Species Recognition and Activity Rhythms Monitoring in Deep-Sea Fauna

1,* , 2,* , 3
, 3
, 1
 and 2
Received: 25 August 2009; in revised form: 1 October 2009 / Accepted: 13 October 2009 / Published: 26 October 2009
(This article belongs to the Special Issue Image Sensors)
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Abstract: The understanding of ecosystem dynamics in deep-sea areas is to date limited by technical constraints on sampling repetition. We have elaborated a morphometry-based protocol for automated video-image analysis where animal movement tracking (by frame subtraction) is accompanied by species identification from animals’ outlines by Fourier Descriptors and Standard K-Nearest Neighbours methods. One-week footage from a permanent video-station located at 1,100 m depth in Sagami Bay (Central Japan) was analysed. Out of 150,000 frames (1 per 4 s), a subset of 10.000 was analyzed by a trained operator to increase the efficiency of the automated procedure. Error estimation of the automated and trained operator procedure was computed as a measure of protocol performance. Three displacing species were identified as the most recurrent: Zoarcid fishes (eelpouts), red crabs (Paralomis multispina), and snails (Buccinum soyomaruae). Species identification with KNN thresholding produced better results in automated motion detection. Results were discussed assuming that the technological bottleneck is to date deeply conditioning the exploration of the deep-sea.
Keywords: automated video-image analysis; deep-sea; behavioural rhythms; mudflows; inertial currents; internal tides; cold-seeps; Sagami bay automated video-image analysis; deep-sea; behavioural rhythms; mudflows; inertial currents; internal tides; cold-seeps; Sagami bay
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Aguzzi, J.; Costa, C.; Fujiwara, Y.; Iwase, R.; Ramirez-Llorda, E.; Menesatti, P. A Novel Morphometry-Based Protocol of Automated Video-Image Analysis for Species Recognition and Activity Rhythms Monitoring in Deep-Sea Fauna. Sensors 2009, 9, 8438-8455.

AMA Style

Aguzzi J, Costa C, Fujiwara Y, Iwase R, Ramirez-Llorda E, Menesatti P. A Novel Morphometry-Based Protocol of Automated Video-Image Analysis for Species Recognition and Activity Rhythms Monitoring in Deep-Sea Fauna. Sensors. 2009; 9(11):8438-8455.

Chicago/Turabian Style

Aguzzi, Jacopo; Costa, Corrado; Fujiwara, Yoshihiro; Iwase, Ryoichi; Ramirez-Llorda, Eva; Menesatti, Paolo. 2009. "A Novel Morphometry-Based Protocol of Automated Video-Image Analysis for Species Recognition and Activity Rhythms Monitoring in Deep-Sea Fauna." Sensors 9, no. 11: 8438-8455.



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