An Acousto-Optic Processor For Inspecting Cigarette Labels

David Casasent; Neil Carender

doi:10.1117/12.969947

1 February 1990 An Acousto-Optic Processor For Inspecting Cigarette Labels

David Casasent, Neil Carender

Proceedings Volume 1197, Automated Inspection and High-Speed Vision Architectures III; (1990) https://doi.org/10.1117/12.969947
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States

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.

Citation Download Citation

David Casasent and Neil Carender "An Acousto-Optic Processor For Inspecting Cigarette Labels", Proc. SPIE 1197, Automated Inspection and High-Speed Vision Architectures III, (1 February 1990); https://doi.org/10.1117/12.969947

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