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Proceedings Paper

An Automatic Visual Inspection System For Industrial Printing
Author(s): Tohru Ozaki; Toshiyuki Gotoh; Takashi Toriu; Masumi Yoshida
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Paper Abstract

We have developed an automatic inspection system for industrial printing applications. This system can discriminate shading unevenness from natural shading gradation of a printed character, and evaluate the degree of any unevenness. The system consists of a host computer, an image memory, an image processing unit, and a numerical processing unit. The image processing unit detects the shading distribution in printed characters input to the image memory. The numerical processing unit quantitatively evaluates any shading unevenness. This system achieves high-speed inspection (0.5 seconds/image) by adopting dedicated hardware and multiple microprocessors.

Paper Details

Date Published: 18 May 1987
PDF: 8 pages
Proc. SPIE 0730, Automated Inspection and Measurement, (18 May 1987); doi: 10.1117/12.937875
Show Author Affiliations
Tohru Ozaki, Fujitsu Laboratories Ltd. (Japan)
Toshiyuki Gotoh, Fujitsu Laboratories Ltd. (Japan)
Takashi Toriu, Fujitsu Laboratories Ltd. (Japan)
Masumi Yoshida, Fujitsu Laboratories Ltd. (Japan)

Published in SPIE Proceedings Vol. 0730:
Automated Inspection and Measurement
Michael J. W. Chen; Robert H. Thibadeau, Editor(s)

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