ZBar::Symbol(3pm) User Contributed Perl Documentation ZBar::Symbol(3pm)
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.
o A negative value indicates that this result is still uncertain
o A zero value indicates the first occurance of this result with high confidence
o 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.
perl v5.14.2 2009-10-23 ZBar::Symbol(3pm)