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_quality()
           Confidence metric.  An unscaled integer value that indicates something (intentionally
           unspecified) about the reliability of this result relative to another.  Larger values
           are better than smaller values, where "large" and "small" are application dependent.
           Expect this definition to become more specific as the metric is enhanced.

       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.

       get_components()
           Components of a composite result.  This yields an array of physical component symbols
           that were combined to form a composite result.

           • 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
       QRCODE
       PDF417

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.