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Proceedings Paper

An Acousto-Optic Processor For Inspecting Cigarette Labels
Author(s): David Casasent; Neil Carender
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Paper Abstract

An acousto-optic correlator is considered to verify that the correct text is present on a product and that the text is not skewed or blurred or mispositioned beyond allowed tolerances. For the case study considered, 20 possible labels exist and the presence of the correct one is to be verified. We need not determine which wrong label is present, although this is possible with modifications. We address the resolution and quantization requirements and the capacity of the system. Initial simulation results and real-time laboratory test results are provided. A space and frequency-multiplexed acousto-optic processor is used and described.

Paper Details

Date Published: 1 February 1990
PDF: 10 pages
Proc. SPIE 1197, Automated Inspection and High-Speed Vision Architectures III, (1 February 1990); doi: 10.1117/12.969947
Show Author Affiliations
David Casasent, Carnegie Mellon University (United States)
Neil Carender, Carnegie Mellon University (United States)

Published in SPIE Proceedings Vol. 1197:
Automated Inspection and High-Speed Vision Architectures III
Michael J. W. Chen, Editor(s)

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