SYSTEMS AND METHODS FOR DETECTING AND DECODING BARCODES WITH BAR DILATION

摘要

Systems and methods for detecting and decoding 4-state barcodes with extreme bar dilation are disclosed. The method is implemented in a computing device and includes: separating an extracted image of a barcode into a top half and a bottom half; estimating bar positions and then sampling heights of the top and bottom images at each position; using adjacent bar height differences to determine the top and bottom of the tracker portion for each bar position; removing the tracker contribution to the top and bottom heights at each bar position; sending the resulting sequence of bars with ascender and descender information to a decoder for decoding processes.

主权项

1. A method implemented in a computing device, comprising:
separating an extracted image associated with a barcode into a top half and bottom half; locating a top and a bottom of a first defined image associated with the barcode by looking for differences in heights between the first defined image and other images associated with a barcode above and below the first defined image; removing contributions associated with the first defined image; and providing the other images associated with a barcode above and below the removed contributions to a decoder for decoding processes.