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Remote identification of a shipwreck site from MBES backscatter

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Title: Remote identification of a shipwreck site from MBES backscatter
Authors: Masetti, Giuseppe1 giuseppemasetti@yahoo.it, Calder, Brian2 brc@ccom.unh.edu
Source: Journal of Environmental Management. Nov2012, Vol. 111, p44-52. 9p.
Subjects: Backscattering, Shipwrecks, Multibeam mapping, Echo sounding, Alpha shapes, Geographic information systems
Abstract: The method described attempts to remotely identify the shape of an anthropogenic object, such as a wreck of a modern vessel, using reflectivity data from Multi-Beam Echosounder (MBES) systems. In the beam domain, the backscatter strength values – geometrically and radiometrically corrected – are used to extract a large number of Gray Level Co-occurrence Matrix (GLCM) features with different input parameters. Principal Component Analysis (PCA) is applied in order to achieve dimensionality reduction whilst a K-means algorithm clusters as “shipwreck site” a large number of beams for each line. After the geo-referencing process, a K-nearest-neighbors (K-NN) technique is applied as a filter for possible misclassifications. Finally, the shape of the shipwreck site is defined from the georeferenced beams using the α-shape method, constructing an output compatible with Geographic Information Systems (GIS). [Copyright &y& Elsevier]
Copyright of Journal of Environmental Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: Remote identification of a shipwreck site from MBES backscatter
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  Data: <searchLink fieldCode="AR" term="%22Masetti%2C+Giuseppe%22">Masetti, Giuseppe</searchLink><relatesTo>1</relatesTo><i> giuseppemasetti@yahoo.it</i><br /><searchLink fieldCode="AR" term="%22Calder%2C+Brian%22">Calder, Brian</searchLink><relatesTo>2</relatesTo><i> brc@ccom.unh.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Management%22">Journal of Environmental Management</searchLink>. Nov2012, Vol. 111, p44-52. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Backscattering%22">Backscattering</searchLink><br /><searchLink fieldCode="DE" term="%22Shipwrecks%22">Shipwrecks</searchLink><br /><searchLink fieldCode="DE" term="%22Multibeam+mapping%22">Multibeam mapping</searchLink><br /><searchLink fieldCode="DE" term="%22Echo+sounding%22">Echo sounding</searchLink><br /><searchLink fieldCode="DE" term="%22Alpha+shapes%22">Alpha shapes</searchLink><br /><searchLink fieldCode="DE" term="%22Geographic+information+systems%22">Geographic information systems</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The method described attempts to remotely identify the shape of an anthropogenic object, such as a wreck of a modern vessel, using reflectivity data from Multi-Beam Echosounder (MBES) systems. In the beam domain, the backscatter strength values – geometrically and radiometrically corrected – are used to extract a large number of Gray Level Co-occurrence Matrix (GLCM) features with different input parameters. Principal Component Analysis (PCA) is applied in order to achieve dimensionality reduction whilst a K-means algorithm clusters as “shipwreck site” a large number of beams for each line. After the geo-referencing process, a K-nearest-neighbors (K-NN) technique is applied as a filter for possible misclassifications. Finally, the shape of the shipwreck site is defined from the georeferenced beams using the α-shape method, constructing an output compatible with Geographic Information Systems (GIS). [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Environmental Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.jenvman.2012.06.037
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 44
    Subjects:
      – SubjectFull: Backscattering
        Type: general
      – SubjectFull: Shipwrecks
        Type: general
      – SubjectFull: Multibeam mapping
        Type: general
      – SubjectFull: Echo sounding
        Type: general
      – SubjectFull: Alpha shapes
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      – SubjectFull: Geographic information systems
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      – TitleFull: Remote identification of a shipwreck site from MBES backscatter
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              Text: Nov2012
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              Y: 2012
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