| The Spatial Characteristics of a Line and Their Application to Line Simplification |
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| 作者姓名： | GUOQingsheng ChristophBrandenberger |
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| 作者单位： | [1]professor,Ph.Dsupervisor,SchoolofResourceandEnvironmentScience,WuhanUniversity,129LuoyuRoad,Wuhan430079,China [2]professor,Ph.Dsupervisor,SchoolofResourceandEnvironmentScience,WuhanUniversity,129LuoyuRoa |
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| 基金项目： | ProjectsupportedbyNSF(No.49971 0 68)，theNationalExcellentYoungTeacherFundandHuoYingdongFundforYoungTeacherinUniversity. |
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| 摘 要： | This paper discusses the spatial knowledge related to a line,and the characteristic points of lines is detected.According to the requirements of line generalization,new algorithms for identifying characteristic line points are presented.These characteristic points are used to improve the algorithms of line generalization.An algorithm for identifying bends is shown.In this paper,improved algorithms based on those by Douglas-Peucker,Visvalingam and Whyatt are shown.In this test,the progressive process of line generalization is emphasized.
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| 关 键 词： | 地图绘制 空间 特征点 特征线产生算法 |
The spatial characteristics of a line and their application to line simplification |
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| Guo?Qingsheng,Christoph?Brandenberger,Lorenz?Hurni.The Spatial Characteristics of a Line and Their Application to Line Simplification[J].Geo-Spatial Information Science,2002,5(1):62-67. |
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| Authors: | Guo Qingsheng Christoph Brandenberger Lorenz Hurni |
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| Institution: | GUO Qingsheng Christoph Brandenberger Lorenz Hurni |
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| Abstract: | This paper discusses the spatial knowledge related to a line ,and the characteristic points of lines is detected.According to the requirements of line generalization,new algorithms for identifying characteristic line points are presented.These characteristic points are used to improve the algorithms of line generalization.An algorithm for identifying bends is shown.In this paper,improved algorithms based on those by Douglas_Peucker,Visvalingam and Whyatt are shown.In this test,the progressive process of line generalization is emphasized. |
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| Keywords: | spatial knowledge characteristic point bend automated map generalization line simplification progressive map generalization |
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