caa a22 4500 467936994 CHVBK 20180406153000.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1007/s00138-006-0019-1 doi (NATIONALLICENCE)springer-10.1007/s00138-006-0019-1 A machine-vision system to measure the parameters describing the performance of a Foucault pendulum [Elektronische Daten] [Joaquín Salas, Wendy Avalos, Rafael Castañeda, Mario Maya] We describe a machine-vision system that makes real-time measurements of the kinematics of a Foucault pendulum. Images are taken from a downward-facing camera placed close to the pendulum suspension point. The bob is detected via background subtraction and located by fitting circles to the resulting contour segments. The bob trajectory is then modelled by fitting ellipses to recent positions. Parameters are improved through Kalman filtering. Experimental results are shown. Our implementation is a robust and accurate tool for visualization of the pendulum kinematics as well as troubleshooting and maintenance of the mechanical elements. Springer Science + Business Media, Inc., 2006 Visual tracking nationallicence Object recognition nationallicence Target detection nationallicence Vision system nationallicence Visual inspection nationallicence Salas Joaquín CICATA Unidad Querétaro-IPN, José Siurob 10, Col. Alameda, 76040, Querétaro, Qro., México aut Avalos Wendy Instituto Tecnológico de Morelia, Av. Tecnologico 1500, Colonia Lomas de Santiaguito, C.P. 58120, Morelia, Mexico aut Castañeda Rafael Instituto Tecnológico de Zitacuaro, Ex-Hacienda de Manzanillos s/n Carr. Toluca-Morelia Apdo., Postal No. 112, C.P. 61500, Zitcuaro, Mexico aut Maya Mario Instituto Tecnológico de Zitacuaro, Ex-Hacienda de Manzanillos s/n Carr. Toluca-Morelia Apdo., Postal No. 112, C.P. 61500, Zitcuaro, Mexico aut Machine Vision and Applications Springer-Verlag 17/2(2006-05-01), 133-138 0932-8092 17:2<133 2006 17 138 https://doi.org/10.1007/s00138-006-0019-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00138-006-0019-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Salas Joaquín CICATA Unidad Querétaro-IPN, José Siurob 10, Col. Alameda, 76040, Querétaro, Qro., México aut NATIONALLICENCE 700 1- Avalos Wendy Instituto Tecnológico de Morelia, Av. Tecnologico 1500, Colonia Lomas de Santiaguito, C.P. 58120, Morelia, Mexico aut NATIONALLICENCE 700 1- Castañeda Rafael Instituto Tecnológico de Zitacuaro, Ex-Hacienda de Manzanillos s/n Carr. Toluca-Morelia Apdo., Postal No. 112, C.P. 61500, Zitcuaro, Mexico aut NATIONALLICENCE 700 1- Maya Mario Instituto Tecnológico de Zitacuaro, Ex-Hacienda de Manzanillos s/n Carr. Toluca-Morelia Apdo., Postal No. 112, C.P. 61500, Zitcuaro, Mexico aut NATIONALLICENCE 773 0- Machine Vision and Applications Springer-Verlag 17/2(2006-05-01), 133-138 0932-8092 17:2<133 2006 17 138 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer