›› 2013, Vol. 42 ›› Issue (4): 0-0.

• 学术论文 •    

地面激光点云强度噪声的三维扩散滤波方法研究

张毅,闫利   

  1. 武汉大学测绘学院
  • 收稿日期:2012-06-26 修回日期:2012-09-12 出版日期:2013-08-20 发布日期:2014-01-23
  • 通讯作者: 张毅 E-mail:yzhang@sgg.whu.edu.cn
  • 基金资助:
    国家自然科学基金;中央高校基本科研业务费专项资金资助项目

Research on 3D Diffusion Filtering Method of Intensity Noise for Terrestrial Laser Scanning Point Cloud

  • Received:2012-06-26 Revised:2012-09-12 Online:2013-08-20 Published:2014-01-23

摘要: 为提高点云数据质量,对点云强度进行滤波的同时保持边缘和细节特征,本文针对地面激光扫描点云的数据特点,研究建立了点云强度三维扩散滤波方程。深入分析了扩散尺度在扩散滤波中的作用,利用信噪比作为滤波质量的定量评价方法,通过统计实验和对比实验,证明了本文方法在点云强度滤波中具有较好效果。

关键词: 地面激光扫描, 点云强度噪声, 三维扩散方程, 非线性滤波, 信噪比

Abstract: In order to improve the quality of point cloud, and to realize intensity filtering while preserving edges and details, this paper develops a three dimensional diffusion equation of point cloud intensity aiming at the data characteristics of terrestrial laser scanning. The effect of diffusion scale in filtering is deeply analyzed. The signal to noise ratio (SNR) is taken as quantitative evaluation method for filtering quality. Through the statistics of test and comparative test, the diffusion equation proposed in this paper show good results.

Key words: Terrestrial Laser Scanning, Intensity Noise of Point Cloud, Three Dimensional Diffusion Equation, Nonlinear Filtering,, SNR

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