ZBARIMG(1) | ZBar Barcode Reader | ZBARIMG(1) |
NAME¶
zbarimg - scan and decode bar codes from image file(s)SYNOPSIS¶
zbarimg [-qv] [--quiet]
[--verbose[=n]]
{ -dD | --display | --nodisplay | --xml |
--noxml |
-S[symbology.]config[= value]
|
--set [symbology.]config[=value]
| image...}
zbarimg {-h | --help |
--version}
DESCRIPTION¶
For each specified image file zbarimg scans the image for bar codes and prints any decoded data to stdout. Images may optionally be displayed to the screen. The underlying library currently supports EAN-13 (including UPC and ISBN subsets), EAN-8, Code 128, Code 39, and Interleaved 2 of 5 symbologies. The specific type of each detected symbol is printed with the decoded data. Note that " image" in this context refers to any format supported by ImageMagick, including many vector formats such as PDF and PostScript. Keep in mind that vector formats are rasterized before scanning; manually rasterize vector images before scanning to avoid unintentionally corrupting embedded barcode bitmaps.OPTIONS¶
This program follows the usual GNU command line syntax. Single letter options may be bundled, long options start with two dashes (`-´). -h, --helpPrint a short help message describing command line
options to standard output and exit
--version
Print program version information to standard output and
exit
-v, --verbose[=n]
Increase debug output level. Multiple -v options
create more spew. Alternatively specify n to set the debug level
directly
-S[symbology.]config[=value],
--set
[symbology.]config[=value]
Set decoder configuration option config for
symbology to value. value defaults to 1 if omitted.
symbology is one of ean13, ean8, upca,
upce, isbn13, isbn10, i25, code39,
code128 or the special value *. If symbology is omitted
or *, the config will be set for all applicable symbologies.
These are the currently recognized configs. Prefix a config with
"no-" to negate it. Not all configs are appropriate for every
symbology.
enable
-q, --quiet
Control decoding/reporting of a symbology. For
symbologies which are just subsets of ean13 ( upca, upce,
isbn13, isbn10), this config controls whether the subsets are
detected and reported as such. These special cases are disabled by default,
all other symbologies default to enabled
disable
Antonym for enable
emit-check
Control whether check digits are included in the decoded
output. Enabled by default. This config does not apply for code128,
which never returns the check digit. It also not apply for cases where the
check digit is disabled (see add-check). Check digits are currently not
implemented for i25 or code39
add-check
Enable decode and verification of a check digit for
symbologies where it is optional: this will include code39 and
i25, neither of which implements the check digit yet
ascii
Enable escape sequences that encode the full ASCII
character set. This would apply to code39, except that it´s not
implemented either...
position
Enable collection of symbol position information. Enabled
by default. Currently, the position information is unusable, so you can save a
few cycles by disabling this.
min-length=n, max-length=n
Bound the number of decoded characters in a valid symbol.
If a decode result is outside the configured min/max range (inclusive), it
will not be reported. Set to 0 to disable the corresponding check. This
setting applies to variable-length symbologies: i25, code39,
code128 and pdf417. min-length defaults to 6 for
i25 and 1 for code39 (per Code 39 autodiscrimination
recommendation); all others default to 0
x-density=n, y-density=n
Adjust the density of the scanner passes. Lower values
scan more of the image at the cost of decreased performance. Setting to 0
disables scanning along that axis. Defaults are both 1.
Quiet operation; only output decoded symbol data.
specifically this disables the statistics line printed (to stderr) before
exiting, as well as the warning message printed (also to stderr) when no
barcodes are found in an image
-d, --display, -D, --nodisplay
Enable/disable display of subsequent image files,
until next --display or --nodisplay is encountered. This option
may appear multiple times to enable display of specific images. Image display
is disabled by default
--xml, --noxml
Enable/disable result output using an XML format. This
format wraps the raw data from the symbol with information about the scan
(such as page indices) in an easy to parse format. The latest schema is
available from http://zbar.sourceforge.net/2008/barcode.xsd.
--raw
Enable raw symbol data output. This format prints symbol
data separated by newlines without the additional symbology type information
that is printed by default
EXAMPLES¶
Scan a PNG image of a UPC bar code symbol and pass resulting data to a script that searches for the code in a database and does something useful with it:zbarimg product.png | upcrpc.py
zbarimg --display -Si25.disable label.jpg
zbarimg --xml -Sdisable -Scode39.enable scan.tiff
SEE ALSO¶
zbarcam(1) http://zbar.sf.net/BUGS¶
See http://sf.net/tracker/?group_id=189236&atid=928515AUTHOR¶
Jeff Brown <spadix@users.sourceforge.net>Lead developer
COPYRIGHT¶
Copyright © 2007-2009 Jeff Brown2009-10-23 | zbar-0.10 |