Zxing not decoding 1D barcode 128 when it only holds one character

Question

When I encode one character as a 1D code 128 barcode, i.e. 'F' or 'M', Zxing doesn't decode it. I first found this issue in my own app where I integrated the zxing source code. Then I checked the original Zxing standalone app as well, just to make sure it wasn't an issue with my integration, but also the standard Zxing app does not decode barcodes of 1 character length.

For example:

enter image description here

doesn't work.

But if the encoded string in the barcode is two or more characters long, i.e. 'AB', 'FF' or 'MM' it works fine. Why does it not work with 1 character length? A bug in zxing?

Indeed this don't work for me too +1. Confimed with HTC Desire HD. I also checked an older version. That was bug free. — rekire
– rekire, Commented Dec 13, 2011 at 14:57
@rekire: thanks, please upvote the bug on code.google.com/p/zxing/issues/detail?id=1103, I just filed the bug report — Mathias Conradt
– Mathias Conradt, Commented Dec 13, 2011 at 14:59

smparkes · Accepted Answer · 2011-12-13 16:00:53Z

3

It was a limitation built into the code in the past to reduce false positives. Based on your bug, it's been found to be no longer necessary and has been removed in the current svn head.

answered Dec 13, 2011 at 16:00

smparkes

14.1k5 gold badges39 silver badges63 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Sean Owen Over a year ago

Yes I had disabled it purposely to avoid false positives but just turned it back on now as it's not a problem anymore.

Mathias Conradt Over a year ago

@SeanOwen Thanks for the quick response and fix!

Collectives™ on Stack Overflow

Zxing not decoding 1D barcode 128 when it only holds one character

1 Answer 1

2 Comments

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Related