Implementation of image-based inspection technology for bridges

Many infrastructures are conducting smart inspections using drones and various inspection equipment. Bridge inspections are still mostly performed by manpower, and the demand for unmanned equipment-based inspections to improve these traditional methods is increasing. In this research, a drone was used to photograph the entire view of the bridge, and rail, wire-cam were used to check the inspection blind spots that occur during inspection by personnel. A 360- degree camera was used in the part accessible to the inspector. Based on the images obtained through all technologies, a three-dimensional road view of the inspection bridge was constructed. The image-based inspection result is intuitive for both managers and inspectors, so it will improve convenience and efficiency during maintenance.