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Proceedings Paper

TDI Imaging In Industrial Inspection
Author(s): David L. Gilblom
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Paper Abstract

Time delay and integration (TDI) imaging was first applied in the early 1970's to aerial photoreconnaissance as an electronic replacement for photographic film. Since that time, TDI has been applied elsewhere infrequently with bare printed circuit board inspection and document digitizing as the only well-known recent applications. Now, TDI has been effectively brought to bear on an ubiquitous problem, that of inspection of moving webs. Although other imaging techniques have been and are being used for web inspection, none shows the broad adaptability and ease of use of TDI-based imaging. Herein is a review of the TDI technique, a specific implementation of TDI in a unique web-imaging-compatible camera and a comparison of the TDI technique with other current technologies.

Paper Details

Date Published: 1 April 1990
PDF: 10 pages
Proc. SPIE 1194, Optics, Illumination, and Image Sensing for Machine Vision IV, (1 April 1990); doi: 10.1117/12.969837
Show Author Affiliations
David L. Gilblom, Sierra Scientific (United States)

Published in SPIE Proceedings Vol. 1194:
Optics, Illumination, and Image Sensing for Machine Vision IV
Donald J. Svetkoff, Editor(s)

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