| 分形模拟在DEM内插中的应用 |
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| 引用本文： | 吕秀琴,张毅.分形模拟在DEM内插中的应用[J].测绘科学,2012,37(2):107-109. |
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| 作者姓名： | 吕秀琴 张毅 |
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| 作者单位： | 1. 武汉大学资源与环境科学学院,武汉,430079
2. 武汉大学测绘学院,武汉,430079 |
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| 基金项目： | 国家自然科学基金资助项目(41001295) |
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| 摘 要： | 为提高DEM的空间分辨率,避免线性插值方法的平滑和低通滤波作用,本文依据地形的分数布朗运动(FBM)特性,提取地形的分形参数,利用分形模拟方法进行插值,并将不同地形的试验结果与线性插值方法进行比较和分析。结果表明该方法能较好保持地形的随机性、不规则性和丰富的细节信息,同时也具有一定的插值精度。
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| 关 键 词： | 分形 DEM内插 空间分辨率 分数布朗运动 插值精度 |
Application of fractal simulation in DEM interpolation |
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| LU Xiu-qin
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ZHANG Yi.Application of fractal simulation in DEM interpolation[J].Science of Surveying and Mapping,2012,37(2):107-109. |
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| Authors: | LU Xiu-qin ZHANG Yi |
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| Institution: | ②(①School of Resource and Environment Science,Wuhan University,Wuhan 430079,China;②School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China) |
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| Abstract: | In order to improve the spatial resolution of DEM and avoid the function of smoothing and low-pass filtering with liner interpolation,this paper extracted the fractal parameters and interpolated with the method of fractal simulation according to the FBM character of terrain.The comparison between liner method and fractal method in different types of terrain showed that the later could maintain the randomness,irregularity and detailed information,while giving better an acceptable precision. |
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| Keywords: | fractal simulation interpolation of DEM spatial resolution FBM(Fractional Brownian Motion) interpolation accuracy |
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