Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
ZBar::Image(3)	      User Contributed Perl Documentation	ZBar::Image(3)

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 v5.32.0			  2009-10-23			ZBar::Image(3)

NAME | SYNOPSIS | DESCRIPTION | REFERENCE | SEE ALSO | AUTHOR | COPYRIGHT AND LICENSE

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=Barcode::ZBar::Image&sektion=3&manpath=FreeBSD+12.2-RELEASE+and+Ports>

home | help