Volume XLII-2
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2, 767-771, 2018
https://doi.org/10.5194/isprs-archives-XLII-2-767-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2, 767-771, 2018
https://doi.org/10.5194/isprs-archives-XLII-2-767-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  30 May 2018

30 May 2018

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

Y. Niina1, R. Honma1, Y. Honma1, K. Kondo1, K. Tsuji1, T. Hiramatsu2, and E. Oketani2 Y. Niina et al.
  • 1Asia Air Survey Co.,Ltd., 1-2-2, Manpukuji, Asao-ku, Kawasaki-shi, Kanagawa, Japan
  • 2West Japan Railway Company, 4-24, Shibata 2-chome, Kita-ku, Osaka, Japan

Keywords: MLS, Railway, Rail Extraction, Clearance Check

Abstract. 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.