Volume 27 Issue 6
Jun.  2002
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ZHANG Qiaoping, LI Deren, HE Ting. Determination and Calculability of Directional Relationship Between Arbitrarily-shaped Polygons[J]. Geomatics and Information Science of Wuhan University, 2002, 27(6): 632-636.
Citation: ZHANG Qiaoping, LI Deren, HE Ting. Determination and Calculability of Directional Relationship Between Arbitrarily-shaped Polygons[J]. Geomatics and Information Science of Wuhan University, 2002, 27(6): 632-636.
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Determination and Calculability of Directional Relationship Between Arbitrarily-shaped Polygons

  • 1 School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan, China, 430079;

  • 2 National Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan, China, 430079

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  • Received Date: July 22, 2002
  • Published Date: June 04, 2002
    Graphical Abstract
    • Abstract
  • This paper presents a new and more effective algorithm to determine the directional relationship between arbitrarily-shaped polygons which is based on the rasterization of polygons and well conforms to spatial cognitive models.The results are identical to that of visual interpretation by human.Then the calculability of the directional relationship between arbitrarily-shaped polygons is discussed.And an approach to determine the calculability based on the number of zero values of the degree of membership of direction is provided.
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