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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/21065


    Title: A hierarchical approach to distance calculation using the spread function
    Authors: 梁恩輝;Liang, En-hui;Lin, Shih-gang
    Contributors: 淡江大學資訊管理學系
    Date: 1998-09-01
    Issue Date: 2009-11-30 13:12:39 (UTC+8)
    Publisher: Taylor & Francis
    Abstract: The spread function is a powerful operation for analysing a wide range of phenomena considered in geographical information systems (GIS). One important and common application of the spread functions is the calculation of distance on a map. Mathematical morphology is a technique extensively used in the area of image processing, and it has been applied to calculating distance using the spread function. Unfortunately, its computation time is extremely long. In this paper, we propose to reduce the computation time by using a hierarchical data structure. The proposed approach and algorithm are presented and experimental results demonstrate that a substantial speed up in computation time can be obtained.
    Relation: International Journal of Geographical Information Science 12(6), pp.515-535
    DOI: 10.1080/136588198241653
    Appears in Collections:[資訊管理學系暨研究所] 期刊論文

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