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Improved Georeferencing of a Wearable Indoor Mapping System Using NDT and Sensor Integration

  • Do, Linh Giang (Dept. of Civil and Environmental Engineering, Myongji University) ;
  • Kim, Changjae (Dept. of Civil and Environmental Engineering, Myongji University) ;
  • Kim, Han Sae (Dept. of Civil and Environmental Engineering, Myongji University)
  • 투고 : 2020.09.15
  • 심사 : 2020.10.21
  • 발행 : 2020.10.31

초록

Three-dimensional data has been used for different applications such as robotics, building reconstruction, and so on. 3D data can be generated from an optical camera or a laser scanner. Especially, a wearable multi-sensor system including the above-mentioned sensors is an optimized structure that can overcome the drawbacks of each sensor. After finding the geometric relationships between sensors, georeferencing of the datasets acquired from the moving system, should be carried out. Especially, in an indoor environment, error propagation always causes problem in the georeferencing process. To improve the accuracy of this process, other sources of data were used to combine with LiDAR (Light Detection and Ranging) data, and various registration methods were also tested to find the most suitable way. More specifically, this paper proposed a new process of NDT (Normal Distribution Transform) to register the LiDAR point cloud, with additional information from other sensors. For real experiment, a wearable mapping system was used to acquire datasets in an indoor environment. The results showed that applying the new process of NDT and combining LiDAR data with IMU (Inertial Measurement Unit) information achieved the best result with the RMSE 0.063 m.

키워드

참고문헌

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피인용 문헌

  1. Design and Implementation of Edge-Fog-Cloud System through HD Map Generation from LiDAR Data of Autonomous Vehicles vol.9, pp.12, 2020, https://doi.org/10.3390/electronics9122084