Monitoring of displacements in bridges and singular structures using computer vision. Example of application in the Cathedral of Saint Mary (Burgos, Spain)

A novel computer vision sensor, the laser & video-based displacement transducer (LVBDT), has demonstrated remarkable accuracy and robustness in monitoring horizontal movements of slender structures like church spires. Deployed at the south spire of Burgos Cathedral, this low-cost device captured slow, low-frequency displacements over a year, revealing significant correlations between structural movements and meteorological events. The findings highlight its suitability for tracking thermal variations and structural aging processes, offering a cost-effective alternative to traditional sensor solutions. This approach holds promise for enhancing the monitoring of heritage sites worldwide.

Mena, A., Vicente, M. A., Mínguez, J., & González, D. C. (2022). Monitoring of displacements in bridges and singular structures using computer vision. Example of application in the Cathedral of Saint Mary (Burgos, Spain). Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability, 370–376. https://doi.org/10.1201/9781003322641-42