This paper describes the development of an on-line quality inspection algorithm for detecting the surface defect “seam” generated in rolling processes. A feature-preserving “snake-projection” method is proposed for dimension reduction by converting the suspicious seam-containing images to one-dimensional sequences. Discrete wavelet transform is then performed on the sequences for feature extraction. Finally, a control chart is established based on the extracted features to distinguish real seams from false positives. The snake-projection method has two parameters that impact the effectiveness of the algorithm. Thus, selection of the parameters is discussed. Implementation of the proposed algorithm shows that it satisfies the speed and accuracy requirements for on-line seam detection.
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October 2007
Research Papers
On-Line Seam Detection in Rolling Processes Using Snake Projection and Discrete Wavelet Transform
Jing Li,
Jing Li
Department of Industrial and Operations Engineering,
The University of Michigan
, 1205 Beal Avenue, Ann Arbor, MI 48109-2117
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Jianjun Shi,
Jianjun Shi
Department of Industrial and Operations Engineering,
The University of Michigan
, 1205 Beal Avenue, Ann Arbor, MI 48109-2117
Search for other works by this author on:
Tzyy-Shuh Chang
Tzyy-Shuh Chang
OG Technologies, Inc.
, 4300 Varsity Drive, Suite C, Ann Arbor, MI 48108
Search for other works by this author on:
Jing Li
Department of Industrial and Operations Engineering,
The University of Michigan
, 1205 Beal Avenue, Ann Arbor, MI 48109-2117
Jianjun Shi
Department of Industrial and Operations Engineering,
The University of Michigan
, 1205 Beal Avenue, Ann Arbor, MI 48109-2117
Tzyy-Shuh Chang
OG Technologies, Inc.
, 4300 Varsity Drive, Suite C, Ann Arbor, MI 48108J. Manuf. Sci. Eng. Oct 2007, 129(5): 926-933 (8 pages)
Published Online: May 3, 2007
Article history
Received:
December 1, 2004
Revised:
May 3, 2007
Citation
Li, J., Shi, J., and Chang, T. (May 3, 2007). "On-Line Seam Detection in Rolling Processes Using Snake Projection and Discrete Wavelet Transform." ASME. J. Manuf. Sci. Eng. October 2007; 129(5): 926–933. https://doi.org/10.1115/1.2752519
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