| Scale-Dependent Representations of Relief Based on Wavelet Analysis |
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| 作者姓名： | WU Fan |
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| 作者单位： | SchoolofResourceandEnvironmentScience,WuhanUniversity,129LuoyuRoad,Wuhan430079,China |
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| 基金项目： | ProjectsupportedbytheNationalScienceFoundationofSurveyingandMappingofChina (No .990 1 3) . |
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| 摘 要： | Automatic generalization of geographic information is the core of multi-scale representation of spatial data,but the scale-depentation of spatial data but the scale-dependent generalization methods are far from abundant because of its extreme complicacy.This paperputs forward a new consistency model about scale-dependent representations of relief based on waveley analysis,and discusses the thresholds in the model so as to acquire the continual representations of relief with different details between scales.The model not only meets the need of automatic generalization but also is scale-dependent completely.Some practical examples are given.
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| 关 键 词： | 数字高程模型 地理信息系统 空间数据 小波分析 DEM 地理数据 |
Scale-dependent representations of relief based on wavelet analysis |
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| WU Fan.Scale-Dependent Representations of Relief Based on Wavelet Analysis[J].Geo-Spatial Information Science,2003,6(1):66-69. |
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| Authors: | Wu Fan |
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| Abstract: | Automatic generalization of geographic information is the core of multi_scale representation of spatial data,but the scale_dependent generalization methods are far from abundant because of its extreme complicacy.This paper puts forward a new consistency model about scale_dependent representations of relief based on wavelet analysis,and discusses the thresholds in the model so as to acquire the continual representations of relief with different details between scales.The model not only meets the need of automatic generalization but also is scale-dependent completely.Some practical examples are given. |
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| Keywords: | multiresolution analysis on wavelet scale-dependence multi-scale representation DEM automatic generalization |
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