barcode::zbar::symbol(3pm) [debian man page]
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)
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ZBar(3pm) User Contributed Perl Documentation ZBar(3pm) NAME
Barcode::ZBar - Perl interface to the ZBar Barcode Reader SYNOPSIS
setup: use Barcode::ZBar; my $reader = Barcode::ZBar::Processor->new(); $reader->init(); $reader->set_data_handler(&my_handler); scan an image: my $image = Barcode::ZBar::Image->new(); $image->set_format('422P'); $image->set_size(114, 80); $image->set_data($raw_bits); $reader->process_image($image); scan from video: $reader->set_visible(); $reader->set_active(); $reader->user_wait(); collect results: my @symbols = $image->get_symbols(); foreach my $sym (@symbols) { print("decoded: " . $sym->get_type() . ":" . $sym->get_data()); } DESCRIPTION
The ZBar Bar Code Reader is a library for scanning and decoding bar codes from various sources such as video streams, image files or raw intensity sensors. It supports EAN, UPC, Code 128, Code 39 and Interleaved 2 of 5. These are the bindings for interacting directly with the library from Perl. REFERENCE
Functions version() Returns the version of the zbar library as "major.minor". increase_verbosity() Increases global library debug by one level. set_verbosity(level) Sets global library debug to the indicated level. Higher numbers give more verbosity. parse_config(configstr) Parse a decoder configuration setting into a list containing the symbology constant, config constant, and value to set. See the documentation for "zbarcam"/"zbarimg" for available configuration options. Constants Width stream "color" constants: SPACE Light area or space between bars. BAR Dark area or colored bar segment. SEE ALSO
Barcode::ZBar::Processor, Barcode::ZBar::ImageScanner, Barcode::ZBar::Image, Barcode::ZBar::Symbol, Barcode::ZBar::Scanner, Barcode::ZBar::Decoder 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(3pm)