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CHEN Haiyong, SUN Hexu, XU De. An image feature extraction method for a certain kind of narrowgap weld seam[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (1): 61-64.
Citation: CHEN Haiyong, SUN Hexu, XU De. An image feature extraction method for a certain kind of narrowgap weld seam[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (1): 61-64.
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An image feature extraction method for a certain kind of narrowgap weld seam

  • 1.

    School of Control Science and Engineering, Hebei University of Technology, Tianjin 300130, China;Hebei Control Engineering Technology Research Center, Tianjin 300130, China

  • 2.

    State Key Laboratory of Intelligent Control and Management for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China

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  • Received Date: October 20, 2010
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    • Abstract
  • A novel feature extraction and image processing method for narrow gap weld seam is proposed,which can effectively overcome all type of disturbance and reliably extract the seam feature points.First,a microscopic vision system with the line structure light is designed that can detect the seam image.Then,a method based on pixel point statistics and adaptive morphological contraction is proposed to segment the structured light stripe.After that a straight line and curve fit scheme are used to accurately gain the centre line of stripe.Finally,based on the distance search the characristic points of the seam is obtained by using the algorithm proposed in this research.The effectiveness of these methods is verified by some interesting results.
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