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Vol.51, No.1, PP.1-41
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1
Panoramic Image Scanning Using the VLP-16 LiDAR Puck with an Automated Lifting Platform
51(1):1-12
Yan-Jyun Lin Zen-Yu Wu Yu-Shen Hsiao* Yu-Hsuan Cho Kuan-Chung Lin
* Corresponding Author. E-mail : yshsiao@nchu.edu.tw
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Panoramic Image Scanning Using the VLP-16 LiDAR Puck with an Automated Lifting Platform
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Yan-Jyun Lin Zen-Yu Wu Yu-Shen Hsiao* Yu-Hsuan Cho Kuan-Chung Lin

Abstract
We used the LiDAR sensor VLP-16 LiDAR Puck with an automatic lifting platform to capture surrounding scenes in 3D. The VLP-16 LiDAR Puck was mounted on a camera stand and placed on a portable automatic lifting platform to increase spatial resolution and complete a 3D cloud point model. Compared with traditional static and dynamic techniques, this method used equipment of considerably lower expense. The study areas included (1) indoor space of the Applied Geomatics Lab and the courtyard of the auditorium at National Chung Hsing University,and (2) the Henglingshan Tunnel. For the test area at the university, this study focused on spatial resolution, point cloud accuracy, and practicality; for the Henglingshan Tunnel, this study attempted to monitor the feasibility of monitoring tunnel leakage.
The results revealed the following. (1) The main reason for point cloud errors was artificial point cloud identification(human error). (2) Distance and error were not positively correlated. (3) The feature objects were difficult to identify from a long distance due to the lower point cloud density. Although high cloud density occurred at a short distance, the effect of human error was stronger. (4) Our method for monitoring tunnel leakage can be effective. We expect to continue improving this VLP-16 technology and hope this method can contribute to the monitoring of soil and water conservation structures.
Key Words: VLP-16, point cloud, tunnel
Department of Soil and Water Conservation, National Chung Hsing University, Taichung 402, Taiwan, R.O.C.
* Corresponding Author. E-mail : yshsiao@nchu.edu.tw
Received: 2019/10/10
Revised: 2019/11/24
Accepted: 2020/03/27
2
Topographic Characteristics by Level of River Blockage Formed by Confluences
51(1):13-20
Shih-Chen Chang [1] Yi-Jun Liu[1] Ming-Hsien Tseng[2] Hsiao-Yu Huang[2] Su-Chin Chen[1] *
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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3
Simulation of Rock Bed Scours in the Upper Reach of Pachang River
51(1):21-33
Hui-Ming Hsieh
* Corresponding Author. E-mail : hmhsieh@tsu.edu.tw
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4
Assessing the Effectiveness of River Regulation Project in Bi-Tan Creek Watershed in Central Taiwan
51(1):34-41
Yuan-Chung Lai[1] Yi-Cheng Liu[4]* Long-You Shao[2] Chao-Hsien Yeh[3] Wei-Lun Tang[4] Chieh-Cheng Pai[4]
* Corresponding Author. E-mail : kenji700808@gmail.com.tw
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