2026-04-19T18:53:37Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/100252025-01-24T01:05:34Zcom_10259_4809com_10259_5086com_10259_2604col_10259_4810

Vicente Cabrera, Miguel Ángel Mena Alonso, Álvaro Mínguez Algarra, Jesús González Cabrera, Dorys Carmen Computer vision Historical heritage Horizontal movement Structural health monitoring Long-term monitoring of horizontal movement of the top of vertical elements, such as towers of historical monuments or chimneys, remains a challenge with current solutions. In such structures, which are usually of high historical and cultural value, ageing and structural degradation directly impact their horizontal movement. This study presents a novel solution based on computer vision that allows the monitoring of horizontal movements with very good accuracy (uncertainty less than ±0.26 mm), high measurement speed (up to 5 Hz), and reduced cost. A real-life validation was carried out on the south spire of the Saint Mary Cathedral in Burgos, Spain. Its horizontal movements were monitored for more than a year, and some relevant events were recorded, including high-range thermal variations, strong wind events, and ringing of the bells. The results showed that the proposed solution was particularly robust for long-term monitoring of slow movements, such as those produced by thermal events or those derived from structural degradation. The white noise of the sensor was small and, for long-term measurements and small reading frequencies, it could obtain field accuracies of the order of ±0.1 mm at a recording frequency of 1/10 Hz, which further improved at lower recording frequencies. 2025-01-23 2025-01-23 2022-02 info:eu-repo/semantics/article 1558-3058 http://hdl.handle.net/10259/10025 10.1080/15583058.2022.2038721 1558-3066 eng International Journal of Architectural Heritage. 2022, V. 17, n. 9, p. 1405-1427 https://doi.org/10.1080/15583058.2022.2038721 http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Taylor and Francis