Detection of barcodes in binary images with arbitrary orientation
August 10, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3868634 Label find method and circuit Pattern recognition system Neighborhood image processing stage for implementing filtering operations System for reproducing mixed images Optical character reader Method of detecting and reading postal bar codes Technique for reading bar codes Method and system for enhancement and detection of abnormal anatomic regions in a digital image Barcode location determination InventorAssigneeApplicationNo. 565668 filed on 08/10/1990US Classes:235/462.08, Bar code location or selection382/173IMAGE SEGMENTATIONExaminersPrimary: Levy, Stuart S.Assistant: Sikorski, Edward H. Attorney, Agent or FirmForeign Patent References
International ClassesG06K 007/10G06K 009/20 G06K 009/40 AbstractThe location and orientation of a barcode block is determined by first producing an image of the document that excludes the barcode block and producing a second image wherein the spaces in the barcode block have been deleted thereby providing a solid rectangular block. The two images are subtracted to reject large background clutter while displaying with certainty the full image of the barcode block. Thereafter, down-sampling occurs to remove small clutter and other non-barcode objects while locating the centroid of each barcode block. The image containing the centroid is up-scaled and used to calculate the position of the barcode block in the original document for use by a barcode reader. | |
