Mapping sea ice leads with a coupled numeric/symbolic system
A method is presented which facilitates the detection and delineation of leads with single-channel Landsat data by coupling numeric and symbolic procedures. The procedure consists of three steps: (1) using the dynamic threshold method, an image is mapped to a lead/no lead binary image; (2) the likel...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19910065267 2023-05-15T18:17:34+02:00 Mapping sea ice leads with a coupled numeric/symbolic system Key, J. Schweiger, A. J. Maslanik, J. A. Unclassified, Unlimited, Publicly available JAN 1, 1990 http://ntrs.nasa.gov/search.jsp?R=19910065267 unknown http://ntrs.nasa.gov/search.jsp?R=19910065267 Accession ID: 91A49890 Copyright Other Sources 48 1990 ftnasantrs 2012-02-15T19:06:03Z A method is presented which facilitates the detection and delineation of leads with single-channel Landsat data by coupling numeric and symbolic procedures. The procedure consists of three steps: (1) using the dynamic threshold method, an image is mapped to a lead/no lead binary image; (2) the likelihood of fragments to be real leads is examined with a set of numeric rules; and (3) pairs of objects are examined geometrically and merged where possible. The processing ends when all fragments are merged and statistical characteristics are determined, and a map of valid lead objects are left which summarizes useful physical in the lead complexes. Direct implementation of domain knowledge and rapid prototyping are two benefits of the rule-based system. The approach is found to be more successfully applied to mid- and high-level processing, and the system can retrieve statistics about sea-ice leads as well as detect the leads. Other/Unknown Material Sea ice NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
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48 |
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48 Key, J. Schweiger, A. J. Maslanik, J. A. Mapping sea ice leads with a coupled numeric/symbolic system |
topic_facet |
48 |
description |
A method is presented which facilitates the detection and delineation of leads with single-channel Landsat data by coupling numeric and symbolic procedures. The procedure consists of three steps: (1) using the dynamic threshold method, an image is mapped to a lead/no lead binary image; (2) the likelihood of fragments to be real leads is examined with a set of numeric rules; and (3) pairs of objects are examined geometrically and merged where possible. The processing ends when all fragments are merged and statistical characteristics are determined, and a map of valid lead objects are left which summarizes useful physical in the lead complexes. Direct implementation of domain knowledge and rapid prototyping are two benefits of the rule-based system. The approach is found to be more successfully applied to mid- and high-level processing, and the system can retrieve statistics about sea-ice leads as well as detect the leads. |
author |
Key, J. Schweiger, A. J. Maslanik, J. A. |
author_facet |
Key, J. Schweiger, A. J. Maslanik, J. A. |
author_sort |
Key, J. |
title |
Mapping sea ice leads with a coupled numeric/symbolic system |
title_short |
Mapping sea ice leads with a coupled numeric/symbolic system |
title_full |
Mapping sea ice leads with a coupled numeric/symbolic system |
title_fullStr |
Mapping sea ice leads with a coupled numeric/symbolic system |
title_full_unstemmed |
Mapping sea ice leads with a coupled numeric/symbolic system |
title_sort |
mapping sea ice leads with a coupled numeric/symbolic system |
publishDate |
1990 |
url |
http://ntrs.nasa.gov/search.jsp?R=19910065267 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19910065267 Accession ID: 91A49890 |
op_rights |
Copyright |
_version_ |
1766191930044055552 |