A Road Surface 3D Measurement Method Using Mobile Cameras and an Automatic Tracking Total Station

Accurate measurement of the shape of road surfaces is essential in pavement work. Recently, mobile laser scanning (MLS) systems have been used to facilitate pavement measurement. MLS Systems require an automatic tracking total station (ATTS) and an inertial measurement unit (IMU) for localization. However, a sophisticated IMU is needed to achieve sufficient accuracy with MLS systems, and such an IMU increases the cost associated with the measurement process. In this report, we propose a novel road surface measurement method using mobile cameras and an ATTS. Our proposed method performs accurate estimation of camera poses using few ground control points, which enables low-cost photogrammetry-based measurements. As a result of our experiment, we confirmed that the proposed method can achieve sufficient accuracy for pavement management.