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dc.contributor.authorDe Francisco Ortiz, Óscar 
dc.contributor.authorEstrems Amestoy, Manuel 
dc.contributor.authorSánchez Reinoso, Horacio Tomás 
dc.contributor.authorCarrero-Blanco Martínez-Hombre, julio
dc.identifier.citationde Francisco Ortiz Ó, Estrems Amestoy M, Sánchez Reinoso HT, Carrero-Blanco Martínez-Hombre J. Enhanced Positioning Algorithm Using a Single Image in an LCD-Camera System by Mesh Elements’ Recalculation and Angle Error Orientation. Materials. 2019; 12(24):4216.
dc.description.abstractIn this article, we present a method to position the tool in a micromachine system based on a camera-LCD screen positioning system that also provides information about angular deviations of the tool axis during its running. Both position and angular deviations are obtained by reducing a matrix of LEDs in the image to a single rectangle in the conical perspective that is treated by a photogrammetry method. This method computes the coordinates and orientation of the camera with respect to the fixed screen coordinate system. The used image consists of 5 × 5 lit LEDs, which are analyzed by the algorithm to determine a rectangle with known dimensions. The coordinates of the vertices of the rectangle in space are obtained by an inverse perspective computation from the image. The method presents a good approximation of the central point of the rectangle and provides the inclination of the workpiece with respect to the LCD screen reference system of coordinates. A test of the method is designed with the assistance of a Coordinate Measurement Machine (CMM) to check the accuracy of the positioning method. The performed test delivers a good accuracy in the position measurement of the designed method. A high dispersion in the angular deviation is detected, although the orientation of the inclination is appropriate in almost every case. This is due to the small values of the angles that makes the trigonometric function approximations very erratic. This method is a good starting point for the compensation of angular deviation in vision based micromachine tools, which is the principal source of errors in these operations and represents the main volume in the cost of machine elements’ parts.es_ES
dc.description.sponsorshipThe authors want to thank the University Center of Defense at the Spanish Air Force Academy, MDE-UPCT, for financial supportes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleEnhanced Positioning Algorithm Using a Single Image in an LCD-Camera System by Mesh Elements' Recalculation and Angle Error Orientationes_ES
dc.subject.otherIngeniería de los Procesos de Fabricaciónes_ES
dc.subject.otherIngeniería Mecánicaes_ES
dc.subjectImage processinges_ES
dc.subjectPosition controles_ES
dc.subjectPosition compensationes_ES
dc.subjectInverse conical perspectivees_ES
dc.subjectManufacturing systemses_ES
dc.subject.unesco3313 Tecnología E Ingeniería Mecánicases_ES
dc.subject.unesco3315 Tecnología Metalúrgicaes_ES
dc.contributor.convenianteCentro Universitario de la Defensaes_ES
dc.contributor.funderIngeniería Murciana SLes_ES

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