Title :
Automated Vision Inspection System for the Size Measurement of Workpieces
Author :
Lei, Liang-Yu ; Zhou, Xiao-Jun ; Pan, Ming-Qing
Author_Institution :
Inst. of Modern Manuf. Eng., Zhejiang Univ. Hangzhou
Abstract :
This paper describes an automated visual inspection system for the size measurement of workpieces, widely applicable to industrial on-line and real-time products inspection such as bearing, gear and so on. The systematic makeup, basis demands and CCD-based size measurement principle is introduced. To increase the efficiency and effect of pre-processing image, take a bearing as an example, fast algorithm for 2-D median filter is advanced and investigated. Also, based on the fundamental theory of the wavelet transform, an edge detection method is successfully used in the feature extraction of a bearing image. Finally, with the studied automated visual inspection system, the out-diameter of a bearing is inspected and analyzed. The result meets demands and shows the system has a broad applied foreground
Keywords :
automatic optical inspection; computer vision; edge detection; feature extraction; machine bearings; size measurement; wavelet transforms; 2D median filter; CCD-based size measurement principle; automated vision inspection system; bearing image; edge detection method; fast algorithm; feature extraction; wavelet transform; workpieces size measurement; Belts; Charge coupled devices; Filters; Gears; Humans; Image edge detection; Inspection; Machine vision; Manufacturing industries; Size measurement; Bearing; CCD; Edge detection; Fast median filter; Vision inspection;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2005. IMTC 2005. Proceedings of the IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-8879-8
DOI :
10.1109/IMTC.2005.1604259
