Bisector-Based Tracking of In Plane Subpixel Translations and Rotations

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dc.contributorÓptica y Ciencias de la Visiónes_ES
dc.contributorGrupo de Ensayo, Simulación y Modelización de Estructuras (GRESMES)es_ES
dc.contributor.authorEspinosa Tomás, Julián-
dc.contributor.authorPérez Rodríguez, Jorge-
dc.contributor.authorFerrer, Belén-
dc.contributor.authorVázquez Ferri, Carmen-
dc.contributor.authorMas, David-
dc.contributor.otherUniversidad de Alicante. Departamento de Óptica, Farmacología y Anatomíaes_ES
dc.contributor.otherUniversidad de Alicante. Departamento de Ingeniería Civiles_ES
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologíases_ES
dc.identifier.citationEspinosa J, Pérez J, Ferrer B, Vázquez C, Mas D. Bisector-Based Tracking of In Plane Subpixel Translations and Rotations. Applied Sciences. 2017; 7(8):835. doi:10.3390/app7080835es_ES
dc.description.abstractWe present a method for distance measuring planar displacements and rotations with image processing methods. The method is based on tracking the intersection of two non-parallel straight segments extracted from a scene. This kind of target can be easily identified in civil structures or in industrial elements or machines. Therefore, our method is suitable for measuring the displacement in some parts of structures and therefore for determining their stress state. We have evaluated the accuracy of our proposal through a computational simulation and validated the method through two lab experiments. We obtained a theoretical mean subpixel accuracy of 0.03 px for the position and 0.02 degrees for the orientation, whereas the practical accuracies were 0.1 px and 0.04 degrees, respectively. One presented lab application deals with the tracking of an object attached to a rotation stage motor in order to characterize the dynamic of the stage, and another application is addressed to the noncontact assessment of the bending and torsional process of a steel beam subjected to load. The method is simple, easy to implement, and widely applicable.es_ES
dc.rights© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
dc.subjectObject trackinges_ES
dc.subjectImage processinges_ES
dc.subjectSubpixel accuracyes_ES
dc.subjectDeflection dynamicses_ES
dc.subject.otherMecánica de Medios Continuos y Teoría de Estructurases_ES
dc.titleBisector-Based Tracking of In Plane Subpixel Translations and Rotationses_ES
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