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电子学报  2012 

测地空间中泊松碟采样的地形模型约简方法

DOI: 10.3969/j.issn.0372-2112.2012.06.035, PP. 1274-1278

Keywords: 泊松碟,地形模型约简,测地距离,自适应采样

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Abstract:

针对地形模型的数据冗余问题,提出在测地空间中进行均匀采样的策略,实现数据精简的目的.该方法随机地从原始地面模型中提取点,根据当前点与已有采样点的测地距离确定是否将其加入到采样点集,重复该过程直至无新的采样点加入.通过定义加权测地距离,该方法能有效调整不同区域的采样概率,从而使精简后的模型能有效保持原始数据的特征信息.该算法原理简单,实现容易,约简后数据的分布具有良好的可视化效果.

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