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CentOS 7.0 - man page for scanimage (centos section 1)

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scanimage(1)			   SANE Scanner Access Now Easy 		     scanimage(1)

       scanimage - scan an image

       scanimage    [-d|--device-name	dev]   [--format   format]   [-i|--icc-profile	 profile]
       [-L|--list-devices]    [-f|--formatted-device-list    format]	[-b|--batch    [=format]]
       [--batch-start start] [--batch-count count] [--batch-increment increment] [--batch-double]
       [--accept-md5-only]  [-p|--progress]   [-n|--dont-scan]	 [-T|--test]   [-A|--all-options]
       [-h|--help]   [-v|--verbose]   [-B|--buffer-size   [=size]]   [-V|--version]  [device-spe-

       scanimage is a command-line interface to control image acquisition devices such as flatbed
       scanners  or  cameras.  The device is controlled via command-line options.  After command-
       line processing, scanimage normally proceeds to acquire an image.  The image data is writ-
       ten  to	standard  output  in one of the PNM (portable aNyMaP) formats (PBM for black-and-
       white images, PGM for grayscale images, and PPM for color images) or in	TIFF  (black-and-
       white, grayscale or color).  scanimage accesses image acquisition devices through the SANE
       (Scanner Access Now Easy) interface and can thus support any device for which there exists
       a SANE backend (try apropos sane- to get a list of available backends).

       To get a list of devices:

	 scanimage -L

       To scan with default settings to the file image.pnm:

	 scanimage >image.pnm

       To  scan  100x100  mm  to  the  file  image.tiff  (-x and -y may not be available with all

	 scanimage -x 100 -y 100 --format=tiff >image.tiff

       To print all available options:

	 scanimage -h

       Parameters are separated by a blank from single-character options (e.g.	-d epson) and  by
       a "=" from multi-character options (e.g. --device-name=epson).

       The   -d   or   --device-name  options  must  be  followed  by  a  SANE	device-name  like
       `epson:/dev/sg0' or `hp:/dev/usbscanner0'.  A (partial) list of available devices  can  be
       obtained  with  the  --list-devices  option  (see  below).  If no device-name is specified
       explicitly,   scanimage	 reads	 a   device-name   from    the	  environment	 variable
       SANE_DEFAULT_DEVICE.   If  this	variable  is  not set, scanimage will attempt to open the
       first available device.

       The --format format option selects how image data is written to standard  output.   format
       can be pnm or tiff.  If --format is not used, PNM is written.

       The -i or --icc-profile option is used to include an ICC profile into a TIFF file.

       The  -L	or --list-devices option requests a (partial) list of devices that are available.
       The list is not complete since some devices may be available, but are not listed in any of
       the  configuration  files  (which are typically stored in directory /etc/sane.d).  This is
       particularly the case when accessing scanners through the network.  If  a  device  is  not
       listed in a configuration file, the only way to access it is by its full device name.  You
       may need to consult your system administrator to find out the names of such devices.

       The -f or --formatted-device-list option works similar to --list-devices, but  requires	a
       format  string.	 scanimage  replaces  the  placeholders %d %v %m %t %i %n with the device
       name, vendor name, model name, scanner type, an index number and newline respectively. The

	      scanimage -f " scanner number %i device %d is a %t, model %m, produced by %v "

       will produce something like:

	      scanner  number  0  device sharp:/dev/sg1 is  a  flatbed scanner, model JX250 SCSI,
	      produced by SHARP

       The --batch* options provide the features for scanning documents using  document  feeders.
       --batch	[format]  is  used  to	specify the format of the filename that each page will be
       written to.  Each page is written out to a single file.	If format is not  specified,  the
       default	of out%d.pnm (or out%d.tif for --format tiff) will be used.  format is given as a
       printf style string with one integer parameter.	--batch-start start selects the page num-
       ber  to start naming files with. If this option is not given, the counter will start at 1.
       --batch-count count specifies the number of pages to attempt to scan.  If not given, scan-
       image  will  continue  scanning	until the scanner returns a state other than OK.  Not all
       scanners with document feeders signal when the ADF is empty,  use  this	command  to  work
       around  them.   With --batch-increment increment you can change the amount that the number
       in the filename is incremented by.  Generally this is used when you are	scanning  double-
       sided  documents on a single-sided document feeder.  A specific command is provided to aid
       this: --batch-double will automatically set the increment to 2.	--batch-prompt	will  ask
       for  pressing  RETURN before scanning a page. This can be used for scanning multiple pages
       without an automatic document feeder.

       The --accept-md5-only option only accepts user authorization  requests  that  support  MD5
       security. The SANE network daemon (saned) is capable of doing such requests. See saned(8).

       The  -p	or  --progress option requests that scanimage prints a progress counter. It shows
       how much image data of the current image has already been received by scanimage	(in  per-

       The -n or --dont-scan option requests that scanimage only sets the options provided by the
       user but doesn't actually perform a scan. This option can be used to  e.g.  turn  off  the
       scanner's lamp (if supported by the backend).

       The -T or --test option requests that scanimage performs a few simple sanity tests to make
       sure the backend works as defined by the SANE API (in particular the sane_read function is
       exercised by this test).

       The -A or --all-options option requests that scanimage lists all available options exposed
       the backend, including button options.  The information is printed on standard output  and
       no scan will be done.

       The -h or --help options request help information.  The information is printed on standard
       output and in this case, no attempt will be made to acquire an image.

       The -v or --verbose options increase the verbosity of the  operation  of  scanimage.   The
       option may be specified repeatedly, each time increasing the verbosity level.

       The -B or --buffer-size changes the input buffer size from 32KB to the number kB specified
       or 1M.

       The -V or --version option requests that scanimage prints the program  and  package  name,
       the version number of the SANE distribution that it came with and the version of the back-
       end that it loads. Usually that's the dll backend. If more information about  the  version
       numbers of the backends are necessary, the DEBUG variable for the dll backend can be used.
       Example: SANE_DEBUG_DLL=3 scanimage -L.

       As you might imagine, much of the power of scanimage comes from the fact that it can  con-
       trol  any  SANE backend.  Thus, the exact set of command-line options depends on the capa-
       bilities of the selected device.  To see the options for a device named dev, invoke  scan-
       image via a command-line of the form:

	      scanimage --help --device-name dev

       The documentation for the device-specific options printed by --help is best explained with
       a few examples:

	-l 0..218mm [0]
	   Top-left x position of scan area.

	      The description above shows that option -l expects an option  value  in  the  range
	      from  0  to 218 mm.  The value in square brackets indicates that the current option
	      value is 0 mm. Most backends provide similar geometry options for top-left y  posi-
	      tion (-t), width (-x) and height of scan-area (-y).

	--brightness -100..100% [0]
	   Controls the brightness of the acquired image.

	      The description above shows that option --brightness expects an option value in the
	      range from -100 to 100 percent.  The value in square brackets  indicates	that  the
	      current option value is 0 percent.

	   Set default values for enhancement controls.

	      The description above shows that option --default-enhancements has no option value.
	      It should be thought of as having an immediate effect at the point of the  command-
	      line  at	which it appears.  For example, since this option resets the --brightness
	      option, the option-pair --brightness 50 --default-enhancements would effectively be
	      a no-op.

	--mode Lineart|Gray|Color [Gray]
	   Selects the scan mode (e.g., lineart or color).

	      The description above shows that option --mode accepts an argument that must be one
	      of the strings Lineart, Gray, or Color.  The value in the square bracket	indicates
	      that the option is currently set to Gray.  For convenience, it is legal to abbrevi-
	      ate the string values as long as they remain unique.  Also, the case of the  spell-
	      ing  doesn't matter.  For example, option setting --mode col is identical to --mode

	--custom-gamma[=(yes|no)] [inactive]
	   Determines whether a builtin or a custom gamma-table
	   should be used.

	      The description above shows that option --custom-gamma  expects  either  no  option
	      value,  a  "yes"	string, or a "no" string.  Specifying the option with no value is
	      equivalent to specifying "yes".  The value in square-brackets  indicates	that  the
	      option is not currently active.  That is, attempting to set the option would result
	      in an error message.  The set of available options typically depends  on	the  set-
	      tings of other options.  For example, the --custom-gamma table might be active only
	      when a grayscale or color scan-mode has been requested.

	      Note that the --help option is processed only after all  other  options  have  been
	      processed.  This makes it possible to see the option settings for a particular mode
	      by specifying the appropriate mode-options along with the --help option.	For exam-
	      ple, the command-line:

	      scanimage --help --mode color

	      would print the option settings that are in effect when the color-mode is selected.

	--gamma-table 0..255,...
	   Gamma-correction table.  In color mode this option
	   equally affects the red, green, and blue channels
	   simultaneously (i.e., it is an intensity gamma table).

	      The  description	above shows that option --gamma-table expects zero or more values
	      in the range 0 to 255.  For example,  a  legal  value  for  this	option	would  be
	      "3,4,5,6,7,8,9,10,11,12".   Since  it's  cumbersome to specify long vectors in this
	      form, the same can be expressed by the abbreviated form  "[0]3-[9]12".   What  this
	      means  is  that the first vector element is set to 3, the 9-th element is set to 12
	      and the values in between are interpolated linearly.  Of course, it is possible  to
	      specify multiple such linear segments.  For example, "[0]3-[2]3-[6]7,[7]10-[9]6" is
	      equivalent to "3,3,3,4,5,6,7,10,8,6".  The program gamma4scanimage can be  used  to
	      generate such gamma tables (see gamma4scanimage(1) for details).

	--filename <string> [/tmp/input.ppm]
	   The filename of the image to be loaded.

	      The  description	above  is  an example of an option that takes an arbitrary string
	      value (which happens to be a filename).  Again, the value in brackets show that the
	      option is current set to the filename /tmp/input.ppm.

	      The default device-name.

	      This directory holds various configuration files.  For details, please refer to the
	      manual pages listed below.

	      This file contains lines of the form


	      scanimage uses this information to answer  user  authorization  requests	automati-
	      cally. The file must have 0600 permissions or stricter. You should use this file in
	      conjunction with the --accept-md5-only option to	avoid  server-side  attacks.  The
	      resource may contain any character but is limited to 127 characters.

       sane(7),  gamma4scanimage(1),  xscanimage(1),  xcam(1), xsane(1), scanadf(1), sane-dll(5),
       sane-net(5), sane-"backendname"(5)

       David Mosberger, Andreas Beck, Gordon Matzigkeit, Caskey Dickson, and  many  others.   For
       questions     and     comments	  contact     the     sane-devel     mailinglist     (see

       For vector options, the help output currently has no indication as to how many elements	a
       vector-value should have.

					   10 Jul 2008				     scanimage(1)
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