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REAL TIME DETECTING TECHNIQUE FOR WORKPIECE BASED ON COMPUTER VISION*
Hu Shaoxing
Information Science Center, Beijing University,
Beijing 100871, China
Zhang Aiwu
Tsinghua University
Ma Chenglin Ma Xu
Jilin University
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Abstract:
With stereovision principle, a real time detecting technique for workpiece is proposed, and the principle and method of the detection technique are expounded in detail. First, workpiece edge is detected by wavelet transform. Second, using geometric invariance, corresponding points are searched. Last, workpiece size is detected, workpiece shape is recognized, and workpiece is detected on line. The experiments show that detection deviation is less than 0.2 mm and detection time is less than 4 s.
Key words:
Computer vision Wavelet transform Image processing Geometric invariance Matching
* This project is supported by “211” Subject of National Accented Colleges and Universities.
Selected from Proceedings of 2000 the First International Conference on
Mechanical Engineering. revised manuscript July 10, 2001
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