Bulletin of Surveying and Mapping ›› 2020, Vol. 0 ›› Issue (4): 53-57,75.doi: 10.13474/j.cnki.11-2246.2020.0111

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Algorithm of pylon automatically localization and point cloud extraction in power line inspection based on LiDAR

HUANG Lujun1, CHEN Guangping1, YUAN Shuai2, TU Pu1, QIAO Jie3   

  1. 1. School of Intelligent Manufacturing, Sichuan University of Arts and Sciences, Dazhou 635000, China;
    2. Faculty of Information&Control Engineering Shenyang Jianzhu University, Shenyang 110168, China;
    3. School of Information Science and technology, Southwest Jiaotong University, Chengdu 611756, China
  • Received:2019-06-07 Online:2020-04-25 Published:2020-05-08

Abstract: An automatic pylon localization and point cloud extraction algorithm is presented in this paper in order to solve the problem of pylon automatically extraction from point cloud of power line inspection. Firstly, 2D mesh is applied to get bias and variance of height of point cloud in each grid, and in which pylon is located cursorily. Secondly, points from tower are extracted roughly according to continuity of height in grids. Afterwards, points from tower are accurately extracted based on the structural features of pylon and power line, in which the density in different hierarchy of height and open operation of image are applied. Finally, point cloud collected from light small UAV-LiDAR is applied in experiments for experimental verification. Experiments show that the presented algorithm works well in the problem of tower extraction, and also has a high performance under condition of poor quality of point cloud. Algorithm presented in this paper has some value in application of power line inspection with LiDAR.

Key words: powerline inspection, LiDAR, point cloud classification, pylon localization, pylon extraction

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