NAME

Barcode::ZBar::Symbol - bar code scan result object

SYNOPSIS

my @symbols = $image->get_symbols();
foreach my $sym (@symbols) {
    print("decoded: " . $sym->get_type() .
          ":" . $sym->get_data().
          "(" . $sym->get_count() . ")");
}

DESCRIPTION

Barcode::ZBar::Symbol objects are constant results returned for each bar code scanned from images or video. This object wraps the raw symbol data with additional information about the decode (symbology, confidence, location, etc)

REFERENCE

Methods

get_type()

The type of bar code "symbology" from which the data was decoded.

get_data()

The decoded data string. Note that some symbologies can encode binary data.

get_count()

Current cache count of the symbol. This integer value provides inter-scan reliability and redundancy information if enabled at the Barcode::ZBar::ImageScanner.

• A negative value indicates that this result is still uncertain

• A zero value indicates the first occurance of this result with high confidence

• A positive value indicates a duplicate scan

Constants

Bar code type "symbology" constants:

NONE

PARTIAL

EAN13

EAN8

UPCA

UPCE

ISBN10

ISBN13

I25

CODE39

CODE128

SEE ALSO

Barcode::ZBar, Barcode::ZBar::Image

zbarimg(1), zbarcam(1)

http://zbar.sf.net

AUTHOR

Jeff Brown, <spadix@users.sourceforge.net>

COPYRIGHT AND LICENSE

Copyright 2008-2009 (c) Jeff Brown <spadix@users.sourceforge.net>

The ZBar Bar Code Reader is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.