2019 Volume 31 Issue 6 Pages 867-875
In road maintenance, it is necessary to construct an environment that manages three-dimensional data and maintenance information. The primary objective of this research project was to support road maintenance work using three-dimensional data by combining terrestrial laser scanning (TLS) and unmanned aerial vehicles (UAV) with photogrammetry. TLS and photogrammetry technologies have been used to survey road structures. Three-dimensional data for the pavement, landform, and bridges have been merged using point cloud data measured and generated by TLS and UAV photogrammetry. Point cloud data have been combined using coordinate points. Coordinates of the three-dimensional data have been created on the basis of the structure from motion range-imaging technique of photogrammetry using video camera data. In addition, the data have been used for road maintenance, taking into consideration data size and accuracy. Road maintenance information can be referenced at any three-dimensional point in the three-dimensional data. This paper has evaluated the accuracy of the three-dimensional data of laser scanning and photogrammetry for road maintenance.
