Enhanced Positioning Algorithm Using a Single Image in an LCD-Camera System by Mesh Elements' Recalculation and Angle Error Orientation
Autor
De Francisco Ortiz, Óscar; Estrems Amestoy, Manuel; Sánchez Reinoso, Horacio Tomás; Carrero-Blanco Martínez-Hombre, julioÁrea de conocimiento
Ingeniería de los Procesos de Fabricación; Ingeniería MecánicaPatrocinadores
The authors want to thank the University Center of Defense at the Spanish Air Force Academy, MDE-UPCT, for financial supportRealizado en/con
Centro Universitario de la DefensaFecha de publicación
2019-12-02Editorial
MDPICita bibliográfica
de 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. https://doi.org/10.3390/ma12244216Revisión por pares
SiPalabras clave
Image processingPosition control
Accuracy
Micromachines
Position compensation
Inverse conical perspective
Micromanufacturing
Manufacturing systems
Mechatronics
Resumen
In 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 ...
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