{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,26]],"date-time":"2025-08-26T04:10:04Z","timestamp":1756181404010,"version":"3.44.0"},"reference-count":29,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2024,9,30]],"date-time":"2024-09-30T00:00:00Z","timestamp":1727654400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/04625\/2020","CEECIND\/04463\/2017"],"award-info":[{"award-number":["UIDB\/04625\/2020","CEECIND\/04463\/2017"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100007434","name":"Ag\u00eancia Nacional de Inova\u00e7\u00e3o","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100007434","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Structural Concrete"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Computer vision enables a much more efficient monitoring system of structural behavior, compared to traditional methods. This derives from the fact that it allows the assessment of displacements in a vast number of points that can be processed to the estimate deformations, accelerations, and other key parameters at relevant cross\u2010sections. This paper proposes a computer vision\u2010based methodology, specifically designed for monitoring seismic tests conducted on a shaking table with a reduced\u2010scale model, using a single camera approach. This innovative methodology uses artificial targets with predefined color and geometry to optimize their detection and tracking. These targets are positioned at key points of the reduced model\u2014\u201cMoving Targets\u201d\u2014and at reference points of the seismic table\u2014\u201cControl Targets.\u201d Videos are recorded during the seismic tests and the coordinates (in pixels) of the targets' centers are automatically detected and captured. Then, transformations are applied to each frame to compute the targets coordinates in millimeters and based on the differences between frames, to calculate the displacements of each target. The methodology was first calibrated with dynamic tests performed on a reduced\u2010scale model (1:33) of a prefabricated concrete shell, printed in acrylonitrile butadiene styrene (ABS), conducted on an educational shaking table. Afterwards, the methodology was validated with seismic tests performed on a 1:3 reduced model of a prefabricated concrete shell, produced according to the similitude theory to best reproduce the behavior of the corresponding prototype. It was demonstrated the ability of the methodology to monitoring seismic tests, enabling continuous tracking of the targets placed on a structure with complex geometry.<\/jats:p>","DOI":"10.1002\/suco.202400624","type":"journal-article","created":{"date-parts":[[2024,9,30]],"date-time":"2024-09-30T07:34:29Z","timestamp":1727681669000},"page":"3891-3904","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Vision\u2010based monitoring system for in\u2010plan seismic tests conducted on a shaking table: The case study of prefabricated concrete shells"],"prefix":"10.1002","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0191-0308","authenticated-orcid":false,"given":"J\u00f3natas","family":"Valen\u00e7a","sequence":"first","affiliation":[{"name":"CERIS, Instituto Superior T\u00e9cnico, Universidade de Lisboa  Lisbon Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-7728-4665","authenticated-orcid":false,"given":"Marco","family":"Brand\u00e3o","sequence":"additional","affiliation":[{"name":"CERIS, Instituto Superior T\u00e9cnico, Universidade de Lisboa  Lisbon Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1690-9887","authenticated-orcid":false,"given":"Eduardo","family":"J\u00falio","sequence":"additional","affiliation":[{"name":"CERIS, Instituto Superior T\u00e9cnico, Universidade de Lisboa  Lisbon Portugal"}]}],"member":"311","published-online":{"date-parts":[[2024,9,30]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/1475921720935585"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.3390\/rs15112895"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/suco.201800279"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aei.2017.09.002"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1061\/(ASCE)CP.1943-5487.0001050"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/suco.201800196"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/suco.201900006"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s43503-022-00008-6"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/stc.2013"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1002\/suco.201900410"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ifacol.2022.10.503"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-007-1977-4_9"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1747-1567.2011.00731.x"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1088\/1361-665X\/aa9450"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.engstruct.2021.113040"},{"key":"e_1_2_8_17_1","first-page":"1","volume-title":"III international congress of engineering mechatronics and automation (CIIMA)","author":"Marrugo W","year":"2014"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.3390\/s21062100"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2012.07.019"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymssp.2020.106905"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/stc.1852"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2010.2048368"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.engstruct.2017.11.018"},{"key":"e_1_2_8_24_1","unstructured":"MathWorks Inc.MATLAB (Versi\u00f3n 9.10). 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