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Evaluation of four supervised learning methods for benthic habitat mapping using backscatter from multi-beam sonar

Citation

Hasan, RC and Ierodiaconou, D and Monk, J, Evaluation of four supervised learning methods for benthic habitat mapping using backscatter from multi-beam sonar, Remote Sensing, 4, (11) pp. 3427-3443. ISSN 2072-4292 (2012) [Refereed Article]


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Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/

DOI: doi:10.3390/rs4113427

Abstract

An understanding of the distribution and extent of marine habitats is essential for the implementation of ecosystem-based management strategies. Historically this had been difficult in marine environments until the advancement of acoustic sensors. This study demonstrates the applicability of supervised learning techniques for benthic habitat characterization using angular backscatter response data. With the advancement of multibeam echo-sounder (MBES) technology, full coverage datasets of physical structure over vast regions of the seafloor are now achievable. Supervised learning methods typically applied to terrestrial remote sensing provide a cost-effective approach for habitat characterization in marine systems. However the comparison of the relative performance of different classifiers using acoustic data is limited. Characterization of acoustic backscatter data from MBES using four different supervised learning methods to generate benthic habitat maps is presented. Maximum Likelihood Classifier (MLC), Quick, Unbiased, Efficient Statistical Tree (QUEST), Random Forest (RF) and Support Vector Machine (SVM) were evaluated to classify angular backscatter response into habitat classes using training data acquired from underwater video observations. Results for biota classifications indicated that SVM and RF produced the highest accuracies, followed by QUEST and MLC, respectively. The most important backscatter data were from the moderate incidence angles between 30 and 50. This study presents initial results for understanding how acoustic backscatter from MBES can be optimized for the characterization of marine benthic biological habitats.

Item Details

Item Type:Refereed Article
Keywords:marine habitat mapping, model comparison, multibeam sonar
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
UTAS Author:Monk, J (Dr Jacquomo Monk)
ID Code:99548
Year Published:2012
Web of Science® Times Cited:47
Deposited By:IMAS Research and Education Centre
Deposited On:2015-03-27
Last Modified:2017-11-04
Downloads:229 View Download Statistics

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