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An Analysis of Uncertainty and Robustness of Waterjet Machine Positioning Vision System
Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
2013 (English)In: Elektronika Ir elektrotechnika, ISSN 1392-1215, Vol. 19, no 9, 89-92 p.Article in journal (Refereed) Published
Abstract [en]

The paper presents a new Automatic Waterjet Positioning Vision System (AWPVS) and investigates components of workpiece positioning accuracy. The main purpose of AWPVS is to precisely identify the position and rotation of a workpiece placed on a waterjet machine table. Two webcams form a basis for the system, and constitute its characteristics. The proposed algorithm comprises various image processing techniques to assure a required identification precision. To validate the PVS identification quality, synthetic images were applied under various conditions. The analysis ascertains dependence of an object detection rate and accuracy on a size of cropping frame. Experimental results of the proposed PVS prototype prove that a combination of the vision algorithm and webcams is an alternative to dedicated expensive industrial vision systems. The two main components of AWPVS uncertainty, a machine component and PSV component are discerned and estimated.

Place, publisher, year, edition, pages
KAUNAS UNIV TECHNOLOGY, KAUNAS UNIV TECHNOL, DEPT ELECTRONICS ENGINEERING, STUDENTU STR 50, KAUNAS, LT-51368, LITHUANIA , 2013. Vol. 19, no 9, 89-92 p.
Keyword [en]
Image cropping, object detection, vision system, waterjet machine, web camera
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-6761DOI: 10.5755/j01.eee.19.9.5656ISI: 000330687100019Local ID: oai:bth.se:forskinfo6A6CD1C0AB79D537C1257C940051324DOAI: oai:DiVA.org:bth-6761DiVA: diva2:834302
Available from: 2014-03-11 Created: 2014-03-07 Last updated: 2015-06-30Bibliographically approved

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