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Calibration methodology of a vision system for measuring the displacements of long‐deck suspension bridges

Structural health monitoring is an emergent powerful diagnostic tool that can be used to identify and to prevent possible failures of the various components that comprise an infrastructure. In a suspension bridge, the measurement of the vertical and transversal displacements plays an important role for its safety evaluation. Considering the restrictions usually found on these structures, an enhanced solution comprises a non‐contact vision‐based measurement system with dynamic response, accuracy and amplitude range well suited to the physical phenomenon to measure.