顾及地形断裂线的LiDAR点云滤波方法研究

广, 马洪超, 张良, 付晶

广, 马洪超, 张良, 付晶. 顾及地形断裂线的LiDAR点云滤波方法研究[J]. 武汉大学学报 ( 信息科学版), 2015, 40(4): 474-478. DOI: 10.13203/j.whugis20130579
引用本文: 广, 马洪超, 张良, 付晶. 顾及地形断裂线的LiDAR点云滤波方法研究[J]. 武汉大学学报 ( 信息科学版), 2015, 40(4): 474-478. DOI: 10.13203/j.whugis20130579

顾及地形断裂线的LiDAR点云滤波方法研究

基金项目: 国家自然科学基金资助项目(61378078);国家科技支撑计划资助项目(2012BAH34B02);中央高校基本科研业务费专项基金资助项目(2012213020203,2012213020209)
详细信息
    作者简介:

    高广,博士生。研究方向为LiDAR数据处理与计算机视觉。

  • 中图分类号: P237

  • 摘要: 目的 针对山区LiDAR点云的特点,对TIN滤波算法的三个重要环节进行了改进:①利用一种简单、快速的随机化格网搜索算法来获取更多的精确初始地面点;②提出一种地形预测角的判断准则来提高地形断裂线附近区域的滤波精度;③对每个激光脚点设置加密优先级,并在滤波过程中动态调整优先级大小,优先级高的激光脚点先进行判断,加密优先级的引入提高了TIN滤波算法对地形的适应性。最后,采用两块分布有大量地形断裂线的山区数据进行实验验证,并与传统的TIN滤波算法进行比较分析,结果表明改进后的TIN滤波算法可以有效地保留山区的地形断裂线特征,提高了算法在山区的滤波精度。
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出版历程
  • 收稿日期:  2013-10-15
  • 修回日期:  2015-04-04
  • 发布日期:  2015-04-04

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