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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Spatial Interpolation of Elevation Data With Variable Density: A New Methodology to Derive Quality DEMs
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Spatial Interpolation of Elevation Data With Variable Density: A New Methodology to Derive Quality DEMs

机译:可变密度的高程数据的空间插值:推导高质量DEM的新方法

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摘要

A new methodology for spatial interpolation of elevation data with variable density is proposed. The method is based on two-step interpolation and data processing to minimize interpolation artifacts caused by variable data density. In the first step, the parameterization of the spline interpolation method is focused on areas with sparse data that need smoother interpolation. Then, the resulting surface in these areas is randomly sampled to densify the original data set. In the second step, the parameterization of the interpolation method is focused on areas with a required high level of detail. The final resulting surface contains the properties of surfaces optimized for different data densities and levels of detail
机译:提出了一种可变密度的高程数据空间插值的新方法。该方法基于两步插值和数据处理,以最小化由可变数据密度引起的插值伪像。第一步,样条插值方法的参数化集中在需要稀疏插值的稀疏数据区域。然后,在这些区域中得到的表面将被随机采样以浓缩原始数据集。第二步,将插值方法的参数化集中在具有所需高细节水平的区域上。最终生成的表面包含针对不同数据密度和细节级别优化的表面属性

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