An Analysis of Uncertainty and Robustness of Waterjet Machine Positioning Vision System

作者：Dziak D M^*; Jachimczyk B S; Kulesza W J

来源：Elektronika ir Elektrotechnika, 2013, 19(9): 89-92.

DOI：10.5755/j01.eee.19.9.5656

• Image cropping
• object detection
• vision system
• waterjet machine
• web camera

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.

• 出版日期2013