Computer Vision. Details
Abstract: The objective of the project was the measurement, in cold, of the dimensions of profiles and rails obtained by rolling. For this, array vision cameras were employed. To obtain the magnitudes a LASER beam was projected over the profile or rail, measuring the deformation of the line, it was possible determinate the measurements.
Financial entity: FICYT (Foundation for the Fostering of Scientific and Applied Technology Research in Asturias)
Participant entities: Oviedo University, ENSIDESA.
A Novel Optical Sensor 3-D Measuring System for Complex Geometry in Adverse Environment (OMEGA)
Abstract: In this project, we obtained at the end of the rolling train the measurements of the normalised dimensions of the H steel profiles. On this occasion the cameras employed generated an interferogram, which after analysis it was possible to obtain a distance map, and then, to calculate the dimensions.
Financial entity: European Union (Program BRITE-EURAM II)
Participant entities: Oviedo University, Aceralia (Spain), CDO (France), Timeat (France), TGI (Spain), Etnoteam (Italy).
Artificial Vision Techniques as Tools for Electronic Instrumentation Calibration
Abstract: Using a camera it is possible to measure dimensions and directions of segments that represent calibration signals in an oscilloscope, see Figure 7. Comparing the obtained results with the ideal results it is possible to calibrate the instrument. The camera employed was conventional.
Financial entity: IMADE (Spain)
Participant entities: Oviedo University, Dräger Hispania S.A
Figure 7: Oscilloscope Calibration
On-line Slabs Surface Inspection in Continuous Casting using Novel Conoscopic Holography Development
Abstract: This project consisted of the detection of superficial defects (cracks, inclusions and pores) in the steel during the continuous casting process. On this occasion, we have employed conoscopic and conventional images. We are going to calculate the cracks dimensions with the conoscopic images.
Financial entity: European Union (Program CECA)
Participant entities: Aceralia (Spain), CDO (France), Centro Sviluppo Materiali (Italy), CDO (France).
Fracture Detection in Sheet Glass using Artificial Vision
Abstract: In this project, the fractures that appear during sheet glass manufacturing process of sheet glass were detected, see Figure 8. Four synchronised cameras have been used to examine all the width of the glass. The glass is moving under the cameras while is cooling.
Financial enterprise: Cristalería Española S.A.
Participant entities: Oviedo University, Cristalería Española S.A.
Figure 8: Examples of fractures detected by the inspection system
Inspection of Paint Defects in Mirrors using Artificial Vision
Abstract: Three synchronised cameras have been employed to view all the width of the mirror area, that is moving under the cameras after having received a layer of paint and before passing to the drying oven. Two kinds of defects are detected, and a signal is emitted every time that an error is found.
Financial enterprise: Cristalería Española S.A.
Participant entities: Oviedo University, Cristalería Española S.A.
Tracking and Visual Inspection System during the Zinc Manufacturing Process
Abstract: In an experimental plant for the manufacturing of zinc a robot has been incorporated. This robot can carry out some operations; one of them is being taking images from the electrodes where the zinc is deposited by the electrolysis process.
Financial enterprise: Asturiana de Zinc Tecnología S.A.
Participant entities: Oviedo University, Asturiana de Zinc Tecnología S.A.
Development of a Measuring System of the Sable Defect at the end of the Semicontinuous Train
Abstract: In the project we will determine during the rolling process the lateral deviation, sable defect, of the steel. We are using three synchronised cameras to have an overall view of the steel and obtain a curve where we can measure the deviation.
Financial enterprise: Aceralia.
Participant entities: Oviedo University, Aceralia.
Abstract: This project is financed by the Regional Plan of Research for 1999. Some equipment has been acquired with the aid of a grant, based on holographic conoscopic techniques, to establish high precision laboratory measurements with the aim to transmit our findings to future industrial projects. (Figure 9).
Financial entity: FICYT.
Participant entities: Oviedo University
Figure 9: Conoscopic Lab. Equipment