1ZBARIMG(1) ZBar Barcode Reader ZBARIMG(1)
2
6 zbarimg - scan and decode bar codes from image file(s)
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9 zbarimg [-qv] [--quiet] [--verbose[=n]]
10 {-dD | --display | --nodisplay | --xml | --noxml |
11 -S[symbology.]config[=value] | --set [symbology.]config[=value]
12 | image...}
13 zbarimg {-h | --help | --version}
15
17 For each specified image file zbarimg scans the image for bar codes and
18 prints any decoded data to stdout. Images may optionally be displayed
19 to the screen.
20 The underlying library currently supports EAN-13 (including UPC and
22 ISBN subsets), EAN-8, DataBar, DataBar Expanded, Code 128, Code 93,
23 Code 39, Codabar, Interleaved 2 of 5 and QR Code symbologies. The
24 specific type of each detected symbol is printed with the decoded data.
25 Note that "image" in this context refers to any format supported by
27 ImageMagick, including many vector formats such as PDF and PostScript.
28 Keep in mind that vector formats are rasterized before scanning;
29 manually rasterize vector images before scanning to avoid
30 unintentionally corrupting embedded barcode bitmaps.
31
33 This program follows the usual GNU command line syntax. Single letter
34 options may be bundled, long options start with two dashes (`-').
35 -h, --help
37 Print a short help message describing command line options to
38 standard output and exit
39 --version
41 Print program version information to standard output and exit
42 -v, --verbose[=n]
44 Increase debug output level. Multiple -v options create more spew.
45 Alternatively specify n to set the debug level directly
46 -S[symbology.]config[=value], --set [symbology.]config[=value]
48 Set decoder configuration option config for symbology to value.
49 value defaults to 1 if omitted. symbology is one of ean13, ean8,
50 upca, upce, isbn13, isbn10, i25, codabar, code39, code93, code128,
51 qrcode or the special value *. If symbology is omitted or *, the
52 config will be set for all applicable symbologies. These are the
53 currently recognized configs. Prefix a config with "no-" to negate
54 it. Not all configs are appropriate for every symbology.
55 enable
57 Control decoding/reporting of a symbology. For symbologies
58 which are just subsets of ean13 (upca, upce, isbn13, isbn10),
59 this config controls whether the subsets are detected and
60 reported as such. These special cases are disabled by default,
61 all other symbologies default to enabled
62 disable
64 Antonym for enable
65 emit-check
67 Control whether check digits are included in the decoded
68 output. Enabled by default. This config does not apply for
69 code128, which never returns the check digit. It also not apply
70 for cases where the check digit is disabled (see add-check).
71 Check digits are currently not implemented for i25 or code39
72 add-check
74 Enable decode and verification of a check digit for symbologies
75 where it is optional: this will include code39 and i25, neither
76 of which implements the check digit yet
77 ascii
79 Enable escape sequences that encode the full ASCII character
80 set. This would apply to code39, except that it's not
81 implemented either...
82 position
84 Enable collection of symbol position information. Enabled by
85 default. Currently, the position information is unusable, so
86 you can save a few cycles by disabling this.
87 test-inverted
89 Specially for QR code images, sometimes the image is inverted,
90 e. g. lines are written in white instead of black. This option
91 makes ZBar to invert the image and parse again, in case it
92 fails using the normal order. Enabling it affects all decoders.
93 min-length=n, max-length=n
95 Bound the number of decoded characters in a valid symbol. If a
96 decode result is outside the configured min/max range
97 (inclusive), it will not be reported. Set to 0 to disable the
98 corresponding check. This setting applies to variable-length
99 symbologies: i25, codabar, code39, code128 and pdf417.
100 min-length defaults to 6 for i25 and 1 for code39 (per Code 39
101 autodiscrimination recommendation); all others default to 0
102 x-density=n, y-density=n
104 Adjust the density of the scanner passes. Lower values scan
105 more of the image at the cost of decreased performance. Setting
106 to 0 disables scanning along that axis. Defaults are both 1.
107 -q, --quiet
109 Quiet operation; only output decoded symbol data. specifically this
110 disables the statistics line printed (to stderr) before exiting, as
111 well as the warning message printed (also to stderr) when no
112 barcodes are found in an image
113 -d, --display, -D, --nodisplay
115 Enable/disable display of subsequent image files, until next
116 --display or --nodisplay is encountered. This option may appear
117 multiple times to enable display of specific images. Image display
118 is disabled by default
119 --xml, --noxml
121 Enable/disable result output using an XML format. This format wraps
122 the raw data from the symbol with information about the scan (such
123 as page indices) in an easy to parse format. The latest schema is
124 available from http://zbar.sourceforge.net/2008/barcode.xsd.
125 --raw
127 Enable raw symbol data output. This format prints symbol data
128 separated by newlines without the additional symbology type
129 information that is printed by default
130
132 Scan a PNG image of a UPC bar code symbol and pass resulting data to a
133 script that searches for the code in a database and does something
134 useful with it:
135 zbarimg product.png | upcrpc.py
137 The upcrpc.py example script included in the examples/ subdirectory of
139 the distribution will make an XMLRPC call to a popular internet UPC
140 database and print the product description if found.
141 Scan a JPEG image containing several barcodes and display the image in
143 a window, also disabling recognition of Interleaved 2 of 5 codes to
144 prevent confusion with other symbologies or background noise:
145 zbarimg --display -Si25.disable label.jpg
147 Look in a scanned document only for Code 39, using XML output format so
149 the page numbers are available. To enable only Code 39, first all
150 symbologies are disabled, then Code 39 is re-enabled:
151 zbarimg --xml -Sdisable -Scode39.enable scan.tiff
153
156 zbarimg returns an exit code to indicate the status of the program
157 execution. Current exit codes are:
158 0
160 Barcodes successfully detected in all images. Warnings may have
161 been generated, but no errors.
162 1
164 An error occurred while processing some image(s). This includes bad
165 arguments, I/O errors and image handling errors from ImageMagick.
166 2
168 ImageMagick fatal error.
169 3
171 The user quit the program before all images were scanned. Only
172 applies when running in interactive mode (with --display)
173 4
175 No barcode was detected in one or more of the images. No other
176 errors occurred.
177
179 zbarcam(1)
180 http://zbar.sf.net/
182
184 See http://sf.net/tracker/?group_id=189236&atid=928515
185
187 Jeff Brown <spadix@users.sourceforge.net>
188 Lead developer
189
191 Copyright © 2007-2010 Jeff Brown
192 All Rights Reserved
194zbar-0.23.90 2017-04-11 ZBARIMG(1)