Positional Displacement Measurement of Floating Units Based on Aerial Images for Pontoon Bridges

This paper proposes a measurement system for aiding or automating the operation to correct pontoon bridge's linearity. The proposed system measures the positional displacements of floating units, which compose the pontoon bridge, by detecting colored areas of an edge part of each floating unit from an aerial view captured by a multicopter. To verify the feasibility of the proposed technique, we evaluated the measurement accuracy of the proposed system using 1/100 scale models of floating units placed on the ground. The experimental result demonstrates that the proposed system has the feasibility of the displacement measurement for retaining pontoon bridge's linearity.