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Towards automated validation of charted soundings: Existing tests and limitations.

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Title: Towards automated validation of charted soundings: Existing tests and limitations.
Authors: Kastrisios, Christos1 (AUTHOR) Christos.Kastrisios@unh.edu, Calder, Brian1 (AUTHOR), Masetti, Giuseppe1 (AUTHOR), Holmberg, Peter2 (AUTHOR)
Source: Geo-Spatial Information Science. Dec2019, Vol. 22 Issue 4, p290-303. 14p.
Subjects: Water depth, Nautical charts, Depth sounding, Testing, Cartographers, Information resources
Abstract: The nautical chart is one of the fundamental tools in navigation used by mariners to plan and safely execute voyages. Its compilation follows strict cartographic constraints with the most prominent being that of the safety. Thereby, the cartographer is called to make the selection of the bathymetric information for portrayal on charts in a way that, at any location, the expected water depth is not deeper than the source information. To validate the shoal-biased pattern of selection two standard tests are used, i.e. the triangle and edge tests. To date, some efforts have been made towards the automation of the triangle test, but the edge test has been largely ignored. In the context of research on a fully automated solution for the compilation of charts at different scales from the source information, this paper presents an algorithmic implementation of the two tests for the validation of selected soundings. Through a case study with real-world data, it presents the improved performance of the implementation near and within depth curves and coastlines and points out the importance of the edge test in the validation process. It also presents the, by definition, intrinsic limitation of the two tests as part of a fully automated solution and discusses the need for a new test that will complement or supersede the existing ones. [ABSTRACT FROM AUTHOR]
Copyright of Geo-Spatial Information Science is the property of Taylor & Francis Ltd 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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DbLabel: Engineering Source
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  Data: Towards automated validation of charted soundings: Existing tests and limitations.
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  Data: <searchLink fieldCode="AR" term="%22Kastrisios%2C+Christos%22">Kastrisios, Christos</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Christos.Kastrisios@unh.edu</i><br /><searchLink fieldCode="AR" term="%22Calder%2C+Brian%22">Calder, Brian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Masetti%2C+Giuseppe%22">Masetti, Giuseppe</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Holmberg%2C+Peter%22">Holmberg, Peter</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Geo-Spatial+Information+Science%22">Geo-Spatial Information Science</searchLink>. Dec2019, Vol. 22 Issue 4, p290-303. 14p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Water+depth%22">Water depth</searchLink><br /><searchLink fieldCode="DE" term="%22Nautical+charts%22">Nautical charts</searchLink><br /><searchLink fieldCode="DE" term="%22Depth+sounding%22">Depth sounding</searchLink><br /><searchLink fieldCode="DE" term="%22Testing%22">Testing</searchLink><br /><searchLink fieldCode="DE" term="%22Cartographers%22">Cartographers</searchLink><br /><searchLink fieldCode="DE" term="%22Information+resources%22">Information resources</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The nautical chart is one of the fundamental tools in navigation used by mariners to plan and safely execute voyages. Its compilation follows strict cartographic constraints with the most prominent being that of the safety. Thereby, the cartographer is called to make the selection of the bathymetric information for portrayal on charts in a way that, at any location, the expected water depth is not deeper than the source information. To validate the shoal-biased pattern of selection two standard tests are used, i.e. the triangle and edge tests. To date, some efforts have been made towards the automation of the triangle test, but the edge test has been largely ignored. In the context of research on a fully automated solution for the compilation of charts at different scales from the source information, this paper presents an algorithmic implementation of the two tests for the validation of selected soundings. Through a case study with real-world data, it presents the improved performance of the implementation near and within depth curves and coastlines and points out the importance of the edge test in the validation process. It also presents the, by definition, intrinsic limitation of the two tests as part of a fully automated solution and discusses the need for a new test that will complement or supersede the existing ones. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Geo-Spatial Information Science is the property of Taylor & Francis Ltd 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=138549232
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1080/10095020.2019.1618636
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 290
    Subjects:
      – SubjectFull: Water depth
        Type: general
      – SubjectFull: Nautical charts
        Type: general
      – SubjectFull: Depth sounding
        Type: general
      – SubjectFull: Testing
        Type: general
      – SubjectFull: Cartographers
        Type: general
      – SubjectFull: Information resources
        Type: general
    Titles:
      – TitleFull: Towards automated validation of charted soundings: Existing tests and limitations.
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            NameFull: Kastrisios, Christos
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            NameFull: Calder, Brian
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            NameFull: Masetti, Giuseppe
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            NameFull: Holmberg, Peter
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          Dates:
            – D: 01
              M: 12
              Text: Dec2019
              Type: published
              Y: 2019
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            – TitleFull: Geo-Spatial Information Science
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