$ zbarimg PFD.PNG
scanned 0 barcode symbols from 1 images in 0.02 seconds
WARNING: barcode data was not detected in some image(s)
things to check:
- is the barcode type supported? currently supported symbologies are:
EAN/UPC (EAN-13, EAN-8, EAN-2, EAN-5, UPC-A, UPC-E,
ISBN-10, ISBN-13), Code 128, Code 93, Code 39, Codabar,
DataBar, DataBar Expanded, and Interleaved 2 of 5
- is the barcode large enough in the image?
- is the barcode mostly in focus?
- is there sufficient contrast/illumination?