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

NAME
       scanimage - scan	an image

SYNOPSIS
       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-specific-options]

DESCRIPTION
       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  written  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),	TIFF format (black-and-white, grayscale	or color), PNG format,
       or JPEG format.	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).

EXAMPLES
       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	avail-
       able with all devices):

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

       To print	all available options:

	 scanimage -h

OPTIONS
       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	 stan-
       dard  output.   format  can be pnm, tiff, png, or jpeg.	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 /usr/local/etc/sane.d).  This is par-
       ticularly  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	admin-
       istrator	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 com-
       mand

	      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, out%d.png for	 --format  png
       or  out%d.jpg  for  -- format jpeg) will	be used.  format is given as a
       printf style string with	one integer  parameter.	  --batch-start	 start
       selects	the  page number 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,	scanimage 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	 docu-
       ments  on  a  single-sided document feeder.  A specific command is pro-
       vided 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 percent).

       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	avail-
       able options exposed the	backend, including button options.  The	infor-
       mation 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 increas-
       ing the verbosity level.

       The -B option without argument changes the input	buffer size  from  the
       default	32KB  to  1MB.	 For finer grained control, use	--buffer-size=
       followed	by the number of KB.

       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	backend	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	control	any SANE backend.  Thus, the exact set of com-
       mand-line  options  depends on the capabilities of the selected device.
       To see the options for a	device named dev, invoke scanimage via a  com-
       mand-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	brack-
	      ets indicates that the current option value is 0 mm. Most	 back-
	      ends  provide  similar  geometry options for top-left y position
	      (-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.

	--default-enhancements
	   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 imme-
	      diate  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	 argu-
	      ment  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 spelling doesn't matter.  For example, option set-
	      ting --mode col is identical to --mode Color.

	--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.	 Spec-
	      ifying 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 settings	of other options.   For	 exam-
	      ple,  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	appro-
	      priate  mode-options along with the --help option.  For example,
	      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 interpo-
	      lated 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.

ENVIRONMENT
       SANE_DEFAULT_DEVICE
	      The default device-name.

FILES
       /usr/local/etc/sane.d
	      This  directory holds various configuration files.  For details,
	      please refer to the manual pages listed below.

       ~/.sane/pass
	      This file	contains lines of the form

	      user:password:resource

	      scanimage	uses this information  to  answer  user	 authorization
	      requests	automatically.	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 charac-
	      ters.

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

AUTHOR
       David Mosberger,	Andreas	Beck, Gordon Matzigkeit, Caskey	 Dickson,  and
       many  others.   For questions and comments contact the sane-devel mail-
       inglist (see http://www.sane-project.org/mailing-lists.html).

BUGS
       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)

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | OPTIONS | ENVIRONMENT | FILES | SEE ALSO | AUTHOR | BUGS

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