barcode::zbar::image(3pm) [debian man page]

ZBar::Image(3pm)					User Contributed Perl Documentation					  ZBar::Image(3pm)

NAME

       Barcode::ZBar::Image - image object to scan for bar codes

SYNOPSIS

	   use Barcode::ZBar;

	   my $image = Barcode::ZBar::Image->new();
	   $image->set_format('422P');
	   $image->set_size(114, 80);
	   $image->set_data($raw_bits);

	   my @symbols = $image->get_symbols();

DESCRIPTION

       Barcode::ZBar::Image is used to pass images to the bar code scanner.  It wraps raw image data with the meta-data required to interpret it
       (size, pixel format, etc)

   Image Formats
       Image data formats are represented by (relatively) standard "Four Character Codes" (fourcc), represented by four character strings in Perl.
       A list of supported formats is available on the project wiki.

       Examples:

       o 'GREY' - single 8bpp intensity plane

       o 'BGR3' - 24bpp packed RGB component format

       o 'YUYV' - 12bpp packed luminance/chrominance (YCbCr) format

REFERENCE

   Methods
       new()
	   Create a new Barcode::ZBar::Image object.  The size, pixel format and data must be defined before the object may be used.

       get_format()
       set_format(format)
	   Return/specify the fourcc code corresponding to the image pixel format.

       get_sequence()
       set_sequence(seq_num)
	   Return/specify the video frame or page number associated with the image.

       get_size()
       set_size(width, height)
	   Return/specify the (width, height) image size tuple.

       get_data()
       set_data(raw)
	   Return/specify the raw image data as a binary string.

       get_symbols()
	   Return a list of scanned Barcode::ZBar::Symbol results attached to this image.

       convert(format)
	   Return a new Barcode::ZBar::Image object converted to the indicated fourcc format.  Returns "undef" if the conversion is not supported.
	   Conversion complexity ranges from CPU intensive to trivial depending on the formats involved.  Note that only a few conversions retain
	   color information.

SEE ALSO

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

       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::Image(3pm)

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Barcode::ITF(3pm)					User Contributed Perl Documentation					 Barcode::ITF(3pm)

NAME

       GD::Barcode::ITF - Create ITF(Interleaved2of5) barcode image with GD

SYNOPSIS

       ex. CGI

	 use GD::Barcode::ITF;
	 binmode(STDOUT);
	 print "Content-Type: image/png

";
	 print GD::Barcode::ITF->new('1234567890')->plot->png;

       with Error Check

	 my $oGdBar = GD::Barcode::ITF->new('A12345678');
	 die $GD::Barcode::ITF::errStr unless($oGdBar);        #Invalid Characters
	 $oGdBar->plot->png;

DESCRIPTION

       GD::Barcode::ITF is a subclass of GD::Barcode and allows you to create ITF barcode image with GD.

   new
       $oGdBar = GD::Barcode::ITF->new($sTxt);

       Constructor.  Creates a GD::Barcode::ITF object for $sTxt.  $sTxt has numeric characters([0-9]).

   plot()
       $oGd = $oGdBar->plot([Height => $iHeight, NoText => 0 | 1]);

       creates GD object with barcode image for the $sTxt specified at new method.  $iHeight is height of the image. If NoText is 1, the image has
       no text image of $sTxt.

	ex.
	 my $oGdB = GD::Barcode::ITF->new('12345678');
	 my $oGD = $oGdB->plot(NoText=>1, Height => 20);
	 # $sGD is a GD image with Height=>20 pixels, with no text.

   barcode()
       $sPtn = $oGdBar->barcode();

       returns a barcode pattern in string with '1' and '0'.  '1' means black, '0' means white.

	ex.
	 my $oGdB = GD::Barcode::ITF->new('12345678');
	 my $sPtn = $oGdB->barcode();

   $errStr
       $GD::Barcode::ITF::errStr

       has error message.

   $text
       $oGdBar->{$text}

       has barcode text based on $sTxt specified in new method.

AUTHOR

       Kawai Takanori GCD00051@nifty.ne.jp

COPYRIGHT

       The GD::Barocde::ITF module is Copyright (c) 2000 Kawai Takanori. Japan.  All rights reserved.

       You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.

SEE ALSO

       GD::Barcode

perl v5.12.3							    2003-05-29							 Barcode::ITF(3pm)

Linux and UNIX Man Pages

barcode::zbar::image(3pm) [debian man page]

Check Out this Related Man Page