ArUco marker-based displacement measurement technique: Uncertainty analysis

The displacement response of structures can provide important information regarding their behaviours. Since image-based measurements have been considerably improved in recent years, in this research, a fiducial marker-based approach is exploited and a displacement measurement technique is proposed. With this method, an industrial camera can be used to measure the displacement of a structure through the detection of an ArUco marker. Acomparison with an established reference technique has been carried out. The uncertainty due to repeatability measurement and the relevance of the acquisition and environmental parameters on the measurement results were researched.