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dcmscale(1)			  OFFIS	DCMTK			   dcmscale(1)

       dcmscale	- Scale	DICOM images

       dcmscale	[options] dcmfile-in dcmfile-out

       The  dcmscale  utility  reads a DICOM image, scales it according	to the
       command line settings and writes	back the  DICOM	 image.	 This  utility
       only supports uncompressed and RLE compressed DICOM images.

       dcmfile-in   DICOM input	filename to be scaled

       dcmfile-out  DICOM output filename to be	written

   general options
	 -h    --help
		 print this help text and exit

		 print version information and exit

		 print expanded	command	line arguments

	 -q    --quiet
		 quiet mode, print no warnings and errors

	 -v    --verbose
		 verbose mode, print processing	details

	 -d    --debug
		 debug mode, print debug information

	 -ll   --log-level  [l]evel: string constant
		 (fatal, error,	warn, info, debug, trace)
		 use level l for the logger

	 -lc   --log-config  [f]ilename: string
		 use config file f for the logger

   input options
       input file format:

	 +f    --read-file
		 read file format or data set (default)

	 +fo   --read-file-only
		 read file format only

	 -f    --read-dataset
		 read data set without file meta information

       input transfer syntax:

	 -t=   --read-xfer-auto
		 use TS	recognition (default)

	 -td   --read-xfer-detect
		 ignore	TS specified in	the file meta header

	 -te   --read-xfer-little
		 read with explicit VR little endian TS

	 -tb   --read-xfer-big
		 read with explicit VR big endian TS

	 -ti   --read-xfer-implicit
		 read with implicit VR little endian TS

   image processing and	encoding options

	 +a    --recognize-aspect
		 recognize pixel aspect	ratio (default)

	 -a    --ignore-aspect
		 ignore	pixel aspect ratio when	scaling

	 +i    --interpolate  [n]umber of algorithm: integer
		 use interpolation when	scaling	(1..4, default:	1)

	 -i    --no-interpolation
		 no interpolation when scaling

	 -S    --no-scaling
		 no scaling, ignore pixel aspect ratio (default)

	 +Sxf  --scale-x-factor	 [f]actor: float
		 scale x axis by factor, auto-compute y	axis

	 +Syf  --scale-y-factor	 [f]actor: float
		 scale y axis by factor, auto-compute x	axis

	 +Sxv  --scale-x-size  [n]umber: integer
		 scale x axis to n pixels, auto-compute	y axis

	 +Syv  --scale-y-size  [n]umber: integer
		 scale y axis to n pixels, auto-compute	x axis

       other transformations:

	 +C    --clip-region  [l]eft [t]op [w]idth [h]eight: integer
		 clip rectangular image	region (l, t, w, h)

       SOP Instance UID:

	 +ua   --uid-always
		 always	assign new SOP Instance	UID (default)

	 +un   --uid-never
		 never assign new SOP Instance UID

   output options
       output file format:

	 +F    --write-file
		 write file format (default)

	 -F    --write-dataset
		 write data set	without	file meta information

       output transfer syntax:

	 +t=   --write-xfer-same
		 write with same TS as input (default)

	 +te   --write-xfer-little
		 write with explicit VR	little endian TS

	 +tb   --write-xfer-big
		 write with explicit VR	big endian TS

	 +ti   --write-xfer-implicit
		 write with implicit VR	little endian TS

       post-1993 value representations:

	 +u    --enable-new-vr
		 enable	support	for new	VRs (UN/UT) (default)

	 -u    --disable-new-vr
		 disable support for new VRs, convert to OB

       group length encoding:

	 +g=   --group-length-recalc
		 recalculate group lengths if present (default)

	 +g    --group-length-create
		 always	write with group length	elements

	 -g    --group-length-remove
		 always	write without group length elements

       length encoding in sequences and	items:

	 +e    --length-explicit
		 write with explicit lengths (default)

	 -e    --length-undefined
		 write with undefined lengths

       data set	trailing padding (not with --write-dataset):

	 -p=   --padding-retain
		 do not	change padding
		 (default if not --write-dataset)

	 -p    --padding-off
		 no padding (implicit if --write-dataset)

	 +p    --padding-create	 [f]ile-pad [i]tem-pad:	integer
		 align file on multiple	of f bytes and items on
		 multiple of i bytes

       The  following preferred	interpolation algorithms can be	selected using
       the --interpolate option:

       o 1 = free scaling algorithm with interpolation from pbmplus toolkit
       o 2 = free scaling algorithm with interpolation from c't	magazine
       o 3 = magnification algorithm with bilinear interpolation  from	Eduard
       o 4  =  magnification  algorithm	with bicubic interpolation from	Eduard
       The level of logging output of  the  various  command  line  tools  and
       underlying  libraries  can  be  specified by the	user. By default, only
       errors and warnings are written to the  standard	 error	stream.	 Using
       option  --verbose  also	informational messages like processing details
       are reported. Option --debug can	be used	to get	more  details  on  the
       internal	 activity,  e.g.  for debugging	purposes. Other	logging	levels
       can be selected using option --log-level. In --quiet  mode  only	 fatal
       errors  are reported. In	such very severe error events, the application
       will usually terminate. For  more  details  on  the  different  logging
       levels, see documentation of module 'oflog'.
       In  case	 the logging output should be written to file (optionally with
       logfile rotation), to syslog (Unix) or the event	log  (Windows)	option
       --log-config  can  be  used.  This  configuration  file also allows for
       directing only certain messages to a particular output stream  and  for
       filtering  certain  messages  based  on the module or application where
       they are	generated.  An	example	 configuration	file  is  provided  in
       All  command  line  tools  use  the  following notation for parameters:
       square brackets enclose optional	 values	 (0-1),	 three	trailing  dots
       indicate	 that multiple values are allowed (1-n), a combination of both
       means 0 to n values.
       Command line options are	distinguished from parameters by a leading '+'
       or  '-' sign, respectively. Usually, order and position of command line
       options are arbitrary (i.e. they	 can  appear  anywhere).  However,  if
       options	are  mutually exclusive	the rightmost appearance is used. This
       behavior	conforms to the	 standard  evaluation  rules  of  common  Unix
       In  addition,  one  or more command files can be	specified using	an '@'
       sign as a prefix	to the filename	(e.g. @command.txt).  Such  a  command
       argument	 is  replaced  by  the	content	of the corresponding text file
       (multiple whitespaces are treated as a  single  separator  unless  they
       appear  between	two  quotation marks) prior to any further evaluation.
       Please note that	a command file cannot contain  another	command	 file.
       This  simple  but  effective  approach  allows  one to summarize	common
       combinations of options/parameters and  avoids  longish	and  confusing
       command lines (an example is provided in	file _datadir_/dumppat.txt).
       The  dcmscale  utility  will  attempt  to  load DICOM data dictionaries
       specified in the	DCMDICTPATH environment	variable. By default, i.e.  if
       the   DCMDICTPATH   environment	 variable   is	 not   set,  the  file
       _datadir_/dicom.dic will	be loaded unless the dictionary	is built  into
       the application (default	for Windows).
       The   default   behavior	  should  be  preferred	 and  the  DCMDICTPATH
       environment variable only used when alternative data  dictionaries  are
       required.  The  DCMDICTPATH environment variable	has the	same format as
       the Unix	shell PATH variable in that a colon (':')  separates  entries.
       On  Windows systems, a semicolon	(';') is used as a separator. The data
       dictionary code will  attempt  to  load	each  file  specified  in  the
       DCMDICTPATH  environment	variable. It is	an error if no data dictionary
       can be loaded.
       Copyright (C) 2002-2014 by OFFIS	e.V., Escherweg	 2,  26121  Oldenburg,

Version	3.6.5			Mon Oct	28 2019			   dcmscale(1)


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