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https://doi.org/10.1016/S0143-8166(97)00106-1
Title: | TDI imaging - a tool for profilometry and automated visual inspection | Authors: | Sajan, M.R. Tay, C.J. Shang, H.M. Asundi, A. |
Issue Date: | Jun-1998 | Citation: | Sajan, M.R., Tay, C.J., Shang, H.M., Asundi, A. (1998-06). TDI imaging - a tool for profilometry and automated visual inspection. Optics and Lasers in Engineering 29 (6) : 403-411. ScholarBank@NUS Repository. https://doi.org/10.1016/S0143-8166(97)00106-1 | Abstract: | TDI imaging is introduced as a solution to industrial web inspection under low-light illumination. In addition to the original purpose of recording clear blur-free images of the objects moving over industrial platforms, it can also be used as a tool for profilometry and automated visual inspection when coupled with proper structured light illumination modules. This paper illustrates a system employing a pulsed laser diode, uniform intensity line generating optics and a high-speed TDI imager for recording structured light patterns from rotating cylindrical objects. Defect or shape information is coded as distortions in a regular grating pattern recorded by the TDI imager. The shape or defect profile is retrieved by employing Fourier transform and scanning spatial phase detection techniques. | Source Title: | Optics and Lasers in Engineering | URI: | http://scholarbank.nus.edu.sg/handle/10635/58766 | ISSN: | 01438166 | DOI: | 10.1016/S0143-8166(97)00106-1 |
Appears in Collections: | Staff Publications |
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