Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels
Railway tunnel 3D clearance inspection is critical to guaranteeing railway operation safety. However, it is a challenge to inspect railway tunnel 3D clearance using a vision system, because both the spatial range and field of view (FOV) of such measurements are quite large. This paper summarizes our...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-04-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/15/4/8664 |
| _version_ | 1811186402786803712 |
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| author | Dong Zhan Long Yu Jian Xiao Tanglong Chen |
| author_facet | Dong Zhan Long Yu Jian Xiao Tanglong Chen |
| author_sort | Dong Zhan |
| collection | DOAJ |
| description | Railway tunnel 3D clearance inspection is critical to guaranteeing railway operation safety. However, it is a challenge to inspect railway tunnel 3D clearance using a vision system, because both the spatial range and field of view (FOV) of such measurements are quite large. This paper summarizes our work on dynamic railway tunnel 3D clearance inspection based on a multi-camera and structured-light vision system (MSVS). First, the configuration of the MSVS is described. Then, the global calibration for the MSVS is discussed in detail. The onboard vision system is mounted on a dedicated vehicle and is expected to suffer from multiple degrees of freedom vibrations brought about by the running vehicle. Any small vibration can result in substantial measurement errors. In order to overcome this problem, a vehicle motion deviation rectifying method is investigated. Experiments using the vision inspection system are conducted with satisfactory online measurement results. |
| first_indexed | 2024-04-11T13:45:59Z |
| format | Article |
| id | doaj.art-2647e8fa3bbd4cb689418a281b4d3bec |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:45:59Z |
| publishDate | 2015-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-2647e8fa3bbd4cb689418a281b4d3bec2022-12-22T04:21:05ZengMDPI AGSensors1424-82202015-04-011548664868410.3390/s150408664s150408664Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway TunnelsDong Zhan0Long Yu1Jian Xiao2Tanglong Chen3School of Electrical Engineering, Southwest Jiaotong University, Erhuan Road No. 111, Jinniu District, Chengdu 610031, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Erhuan Road No. 111, Jinniu District, Chengdu 610031, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Erhuan Road No. 111, Jinniu District, Chengdu 610031, ChinaSchool of Electrical Engineering, Southwest Jiaotong University, Erhuan Road No. 111, Jinniu District, Chengdu 610031, ChinaRailway tunnel 3D clearance inspection is critical to guaranteeing railway operation safety. However, it is a challenge to inspect railway tunnel 3D clearance using a vision system, because both the spatial range and field of view (FOV) of such measurements are quite large. This paper summarizes our work on dynamic railway tunnel 3D clearance inspection based on a multi-camera and structured-light vision system (MSVS). First, the configuration of the MSVS is described. Then, the global calibration for the MSVS is discussed in detail. The onboard vision system is mounted on a dedicated vehicle and is expected to suffer from multiple degrees of freedom vibrations brought about by the running vehicle. Any small vibration can result in substantial measurement errors. In order to overcome this problem, a vehicle motion deviation rectifying method is investigated. Experiments using the vision inspection system are conducted with satisfactory online measurement results.http://www.mdpi.com/1424-8220/15/4/8664railway tunnel3D clearancedynamic inspection |
| spellingShingle | Dong Zhan Long Yu Jian Xiao Tanglong Chen Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels Sensors railway tunnel 3D clearance dynamic inspection |
| title | Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels |
| title_full | Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels |
| title_fullStr | Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels |
| title_full_unstemmed | Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels |
| title_short | Multi-Camera and Structured-Light Vision System (MSVS) for Dynamic High-Accuracy 3D Measurements of Railway Tunnels |
| title_sort | multi camera and structured light vision system msvs for dynamic high accuracy 3d measurements of railway tunnels |
| topic | railway tunnel 3D clearance dynamic inspection |
| url | http://www.mdpi.com/1424-8220/15/4/8664 |
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