Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/58767
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dc.titleTDI imaging and scanning moiré for online defect detection
dc.contributor.authorSajan, M.R.
dc.contributor.authorTay, C.J.
dc.contributor.authorShang, H.M.
dc.contributor.authorAsundi, A.
dc.date.accessioned2014-06-17T05:18:12Z
dc.date.available2014-06-17T05:18:12Z
dc.date.issued1997-09
dc.identifier.citationSajan, M.R.,Tay, C.J.,Shang, H.M.,Asundi, A. (1997-09). TDI imaging and scanning moiré for online defect detection. Optics and Laser Technology 29 (6) : 327-331. ScholarBank@NUS Repository.
dc.identifier.issn00303992
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/58767
dc.description.abstractThis paper explains the application of scanning moiré in association with TDI (Time Delay and Integration) imaging for complete peripheral inspection of cylindrical objects. Based on the structured light technique, a grating pattern modulated by deformations, such as dents on the surface of a rotating cylindrical object, is recorded using a TDI camera. The illumination system consists of an intensity modulated, line generating laser diode aligned at an angle to the camera axis. By using the TDI option for recording every nth line, an online scanning moiré pattern is generated. After providing a simple explanation of the scanning moiré, the effects of object rotation speed and TDI scan speed on the fringe pattern are discussed and demonstrated. The techniques presented here offer low cost solutions to industrial machine vision tasks related to peripheral imaging and inspection of cylindrical objects. © 1998 Elsevier Science Ltd.
dc.sourceScopus
dc.subjectDynamic imaging
dc.subjectMachine vision
dc.subjectMoiré
dc.subjectOptical inspection
dc.subjectProfilometry
dc.subjectTDI
dc.typeArticle
dc.contributor.departmentMECHANICAL & PRODUCTION ENGINEERING
dc.description.sourcetitleOptics and Laser Technology
dc.description.volume29
dc.description.issue6
dc.description.page327-331
dc.description.codenOLTCA
dc.identifier.isiutNOT_IN_WOS
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