AUTOMATIC RAIL EXTRACTION AND CELARANCE CHECK WITH A POINT CLOUD CAPTURED BY MLS IN A RAILWAY

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Niina, Y.^1¹  Honma, R.^1² 

[1] Asia Air Survey Co.,Ltd., 1-2-2, Manpukuji, Asao-ku, Kawasaki-shi, Kanagawa, Japan^1;West Japan Railway Company, 4-24, Shibata 2-chome, Kita-ku, Osaka, Japan^2

关键词: MLS;    Railway;    Rail Extraction;    Clearance Check;   

DOI  :  10.5194/isprs-archives-XLII-2-767-2018

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

Recently, MLS (Mobile Laser Scanning) has been successfully used in a road maintenance. In this paper, we present the application of MLS for the inspection of clearance along railway tracks of West Japan Railway Company. Point clouds around the track are captured by MLS mounted on a bogie and rail position can be determined by matching the shape of the ideal rail head with respect to the point cloud by ICP algorithm. A clearance check is executed automatically with virtual clearance model laid along the extracted rail. As a result of evaluation, the accuracy of extracting rail positions is less than 3 mm. With respect to the automatic clearance check, the objects inside the clearance and the ones related to a contact line is successfully detected by visual confirmation.

【 授权许可】

CC BY