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WEI Yong-fei, DU Zheng-chun, YAO Zhen-qiang. Application of median filter in point cloud data pre-processing lidar[J]. LASER TECHNOLOGY, 2009, 33(2): 213-216.
Citation: WEI Yong-fei, DU Zheng-chun, YAO Zhen-qiang. Application of median filter in point cloud data pre-processing lidar[J]. LASER TECHNOLOGY, 2009, 33(2): 213-216.
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Application of median filter in point cloud data pre-processing lidar

  • 1.

    School of Mechanical Engineering, Shanghai JiaoTong University, Shanghai 200240, China;

  • 2.

    State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China

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  • Received Date: January 13, 2008
  • Revised Date: March 06, 2008
  • Published Date: April 24, 2009
    Graphical Abstract
    • Abstract
  • Based on the method of filter used to eliminate noise from gray image according to its gray value,median filter was proposed to remove noise from the point cloud data obtained by a 3-D lidar measuring system.A lidar can be used to collect point cloud data from the surface of an object.The quantity of the point cloud data is huge with noise,which is always harmful to surface reconstruction if it is not removed.Based on the character of the point cloud data,an improved algorithm for 2-D median filter and method for segregating noise from point cloud were mainly emphasized.The speed and effect of the process are improved significantly, which demonstrates that median filter can be used to deal with the lidar data.
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    • References (13)
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