抄録
Various measurement systems have been developed in order to solve the problem of superannuated infrastructures. Recently the utilization of 3D data became general technique that the measurement with the laser scanners (Terrestrial laser scanners and Mobile mapping systems) is one of the effective techniques. The advantage of 3D laser measurement is able to acquire the 3d data of spatial area and manage the data as surface. The combination of the laser scanning system and other techniques is expected to improve the data quality.
