NDLI: A new surface inspection method of TWBS based on active laser-triangulation

Content Provider	IEEE Xplore Digital Library
Author	Lei Zhang Mingyang Zhao Yuanyuan Zou Shiyi Gao
Copyright Year	2008
Description	Author affiliation: Grad. Sch. of the Chinese Acad. of Sci., Chinese Acad. of Sci., Shenyang (Lei Zhang; Mingyang Zhao; Yuanyuan Zou; Shiyi Gao)
Abstract	An vision inspection sensor system for the automation of laser welding processes in heavy industries is presented. The system consists of PC based vision camera and stripe type laser diode. For image de-noising, a new surface inspection method of Tailor-welded blanks including in: median filtering, bi-level thresholding, opening and closing, mid-line of the laser stripe extraction, has been developed. After extracting the middle line of the laser stripe, the algorithms of calculating bead width, mismatch, weld slope, convexity, concavity, overthickness and undercut are proposed. Finally, A series of experiments show that the proposed method in this paper is effective.
Starting Page	1174
Ending Page	1179
File Size	637202
Page Count	6
File Format	PDF
ISBN	9781424421138
DOI	10.1109/WCICA.2008.4593090
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Welding Inspection Surface emitting lasers Lasers Feature extraction Filtering Image processing Laser-triangulation image processing surface inspection weld defect detection
Content Type	Text
Resource Type	Article

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