TUNNEL DEFORMATION ANALYSIS USING KNNS-ICP METHOD
BASED ON TERRESTRIAL LASER SCANNING DATA
Survey of Hubei Electric Power Design Institute,Wuhan 430079
Abstract A method for analyzing tunnel deformation with the terrestrial laser scan(TLS)data based on the KNNSICP closing algorithm was proposed in the paper.First,the tunnel point cloud in the same area is extracted after registration.Second,the initial rotation and translation matrix are setted to unit and zero.The same slice of point cloud is closed by KNNSICP.At the last,the errors of corresponding points are calculated and the threshold is determined.The threshold is employed to extract the abnormal points before and after the deformation.The tunnel deformation would be determined by analyzing the changes of abnormal points.The results demonstrate the validity of the proposed method according to the example.
Key words :
terrestrial laser scan
deformation
KNNS
tunnel deformation
Received: 04 November 2013
Published: 09 December 2014
Cite this article:
Feng Fajie,Liu Huiwu. TUNNEL DEFORMATION ANALYSIS USING KNNS-ICP METHOD
BASED ON TERRESTRIAL LASER SCANNING DATA[J]. jgg, 2014, 34(6): 167-172.
Feng Fajie,Liu Huiwu. TUNNEL DEFORMATION ANALYSIS USING KNNS-ICP METHOD
BASED ON TERRESTRIAL LASER SCANNING DATA[J]. jgg, 2014, 34(6): 167-172.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I6/167
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