Title: A novel internal thread defect auto-inspection system
Authors: Perng, Der-Baau
Chen, Ssu-Han
Chang, Yuan-Shuo
工業工程與管理學系
Department of Industrial Engineering and Management
Keywords: Internal thread;Rigid industrial endoscope;Machine vision;Directional texture;Fourier-based image restoration scheme
Issue Date: 1-Mar-2010
Abstract: This paper describes a novel optical thread plug gauge (OTPG) for internal thread inspection using machine vision. The OTPG is composed of a rigid industrial endoscope, a charge-coupled device camera, and a two degree-of-freedom motion control unit. A sequence of partial wall images of an internal thread are retrieved and reconstructed into a 2D unwrapped image. Then, a digital image processing and classification procedure is used to normalize, segment, and determine the quality of the internal thread. The proposed OTPG provides an orientation-free and convenient method for detecting defects such as scratches, collapses, and flaws in an internal thread.
URI: http://dx.doi.org/10.1007/s00170-009-2211-8
http://hdl.handle.net/11536/5764
ISSN: 0268-3768
DOI: 10.1007/s00170-009-2211-8
Journal: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume: 47
Issue: 5-8
Begin Page: 731
End Page: 743
Appears in Collections:Articles


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