Acta Metrologica Sinica  2018, Vol. 39 Issue (5): 609-614    DOI: 10.3969/j.issn.1000-1158.2018.05.04
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Damage Parameter Calculation Based on 3D Point Cloud Mean Curvature Estimation
ZHANG Yu-yan1,2,QU Wen-han1,2,GUO Quan-li1,2,REN Rui3
1.Institute of Electrical Engineering, Yanshan University, Qinhuangdao, Hebei 066004, China
2.Key Lab of Measurement Technology and Instrumentation of Hebei Province, Qinhuangdao, Hebei 066004, China
3.Academy of Armored Forces Engineering, Beijing 100072, China
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Abstract  Aiming at the surface damage measurement of high speed sliding electric contact rail, a method of evaluating damage mass based on mean curvature estimation of 3D laser point cloud is presented. The laser scanner is used to obtain point cloud data which will be denoised, filtered, reduced, and k neighborhood searched. Next step of data processing is local quadric surface fitting, then the mean curvature of the point cloud data is estimated. The curvature threshold is set to achieve the extraction of feature point cloud to achieve damage area. According to detection results, the damage volume and mass loss are calculated. The experimental results show that the measurement precision can reach mg level. Moreover, the proposed approach is feasible and effective to measure the surface damage.
Key wordsmetrology      sliding electrical contact      guide rail      point cloud data      curvature estimation      surface damage     
Received: 14 June 2017      Published: 05 September 2018
PACS:  TB92  
Corresponding Authors: Yu-yan ZHANG     E-mail: yyzhang@ysu.edu.cn
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ZHANG Yu-yan
QU Wen-han
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REN Rui
Cite this article:   
ZHANG Yu-yan,QU Wen-han,GUO Quan-li, et al. Damage Parameter Calculation Based on 3D Point Cloud Mean Curvature Estimation[J]. Acta Metrologica Sinica, 2018, 39(5): 609-614.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2018.05.04     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2018/V39/I5/609
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