Barcode width measurement system

Details Barcode width measurement system Barcode width measurement system

1981-06-01

1983-10-18

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

235440, 235462, 235463, 382 67, G06K 928

Patent

active

044110162

ABSTRACT:
A single columnar array of scanning diodes is used to make width measurements of bar codes in order to read the contents thereof. The bar code is scanned utilizing a scanning procedure which directs the columnar array along the bar code such that the photo elements on the scanning array lie along an axis parallel to a line drawn horizontally through the bar codes. The same scanning array may be used to read alphanumeric characters scanning along an axis perpendicular to the columnar array.

REFERENCES:
patent: 3033449 (1962-05-01), Quinn et al.
patent: 3410991 (1968-11-01), Van Berkel
patent: 3578953 (1971-05-01), Milford et al.
patent: 3643069 (1972-02-01), Kikuchi
patent: 3870865 (1975-03-01), Schneiderhan et al.
patent: 4087790 (1978-05-01), Neff
patent: 4108368 (1978-08-01), Dobras
patent: 4135663 (1979-01-01), Nojiri et al.

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