| GIS数字曲线复杂性的度量与误差建模中趋势项的分离 |
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| 引用本文： | 刘文宝,黄幼才,李宗华.GIS数字曲线复杂性的度量与误差建模中趋势项的分离[J].武汉大学学报(信息科学版),1995(4). |
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| 作者姓名： | 刘文宝 黄幼才 李宗华 |
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| 作者单位： | 武汉测绘科技大学地球科学与测量工程学院 |
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| 基金项目： | 测绘遥感信息工程国家重点实验室开放研究基金 |
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| 摘 要： | 引入了衡量ＧＩＳ数字曲线复杂性的四种指标，提出了误差建模中趋势项分离的样条函数法，考察了分离一组具有不同复杂度模拟曲线的有效性，并与差分法进行了比较。
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| 关 键 词： | 数字曲线 复杂性 趋势项 样条函数 |
On Measuring Complexity of Digital Curves and SeparatingStochastic Part from Trend Movement of Digitizing Process |
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| Liu Wenbao, Huang Youcai, Li Zonghua.On Measuring Complexity of Digital Curves and SeparatingStochastic Part from Trend Movement of Digitizing Process[J].Geomatics and Information Science of Wuhan University,1995(4). |
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| Authors: | Liu Wenbao Huang Youcai Li Zonghua |
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| Abstract: | After tile digitizing process,cartographic curves become broken lines,which are called digital curves. The complexity of the digital curves could bemeasured by their curvature. Separation of stochastic part from trend movement ofdigitizing process could be realized by using the spline approximating aPProach.Validity check of this method has been conducted by employing several curves withdifferent curvatures. |
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| Keywords: | digital curves complexity trend movement spline function |
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