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US 8,893,974 B2Granted
Decoder for barcodes with anti-copy feature
AssigneeEastman Kodak Company
InventorsThomas D. Pawlik, Myra T. Olm
Life of this patent
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Abstract
A method for detecting reproduction of barcodes (12) includes providing a barcode which contains data; providing a copy-evident background (14); capturing an image of the barcode and the copy-evident background; locating and decoding the barcode; detecting copy introduced changes in the copy-evident background; and authenticating the barcode if the copy-evident background has not been copied.
Claims8
A method for detecting reproduction of barcodes comprising:
- providing a barcode which contains data;
- providing a copy-evident background;
- capturing an image of the barcode and the copy-evident background;
- locating and decoding the barcode;
- using the location of the barcode to locate the copy-evident background,
- detecting copy introduced changes in the copy-evident background;
- and
- authenticating the barcode if the copy-evident background has not been copied.
5 more elements
A method for detecting reproduction of barcodes comprising:
- providing a barcode which contains data and one or more color elements;
- capturing an image of the barcode and a copy-evident background;
- locating and decoding the barcode;
- using the location of the barcode to locate the copy-evident background,
- detecting copy introduced changes in the color of the barcode;
- and
- authenticating the barcode if the barcode has not been copied.
4 more elements
Dependencies are inferred from the claim text.