dcml2pnm(1)                       OFFIS DCMTK                      dcml2pnm(1)



NAME
       dcml2pnm - Convert DICOM images to PGM/PPM, PNG, TIFF or BMP

SYNOPSIS
       dcml2pnm [options] dcmfile-in [bitmap-out]


DESCRIPTION
       The  dcml2pnm  utility  reads  a  DICOM  image, converts the pixel data
       according to the selected image processing options and writes  back  an
       image in the well-known PGM/PPM (portable gray map / portable pix map),
       PNG, TIFF or Windows BMP format. This utility supports uncompressed  as
       well as JPEG-LS and RLE compressed DICOM images.

PARAMETERS
       dcmfile-in  DICOM input filename to be converted

       bitmap-out  output filename to be written (default: stdout)


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

               --version
                 print version information and exit

               --arguments
                 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 options
       frame selection:

         +F    --frame  [n]umber: integer
                 select specified frame (default: 1)

         +Fr   --frame-range  [n]umber [c]ount: integer
                 select c frames beginning with frame n

         +Fa   --all-frames
                 select all frames

       rotation:

         +Rl   --rotate-left
                 rotate image left (-90 degrees)

         +Rr   --rotate-right
                 rotate image right (+90 degrees)

         +Rtd  --rotate-top-down
                 rotate image top-down (180 degrees)

       flipping:

         +Lh   --flip-horizontally
                 flip image horizontally

         +Lv   --flip-vertically
                 flip image vertically

         +Lhv  --flip-both-axes
                 flip image horizontally and vertically

       scaling:

         +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

       modality LUT transformation:

         -M    --no-modality
                 ignore stored modality LUT transformation

         +M    --use-modality
                 use modality LUT transformation (default)

       VOI LUT transformation:

         -W    --no-windowing
                 no VOI windowing (default)

         +Wi   --use-window  [n]umber: integer
                 use the n-th VOI window from image file

         +Wl   --use-voi-lut  [n]umber: integer
                 use the n-th VOI look up table from image file

         +Wm   --min-max-window
                 compute VOI window using min-max algorithm

         +Wn   --min-max-window-n
                 compute VOI window using min-max algorithm,
                 ignoring extreme values

         +Wr   --roi-min-max-window  [l]eft [t]op [w]idth [h]eight: integer
                 compute ROI window using min-max algorithm,
                 region of interest is specified by l,t,w,h

         +Wh   --histogram-window  [n]umber: integer
                 compute VOI window using Histogram algorithm,
                 ignoring n percent

         +Ww   --set-window  [c]enter [w]idth: float
                 compute VOI window using center c and width w

         +Wfl  --linear-function
                 set VOI LUT function to LINEAR

         +Wfs  --sigmoid-function
                 set VOI LUT function to SIGMOID

       presentation LUT transformation:

         +Pid  --identity-shape
                 set presentation LUT shape to IDENTITY

         +Piv  --inverse-shape
                 set presentation LUT shape to INVERSE

         +Pod  --lin-od-shape
                 set presentation LUT shape to LIN OD

       overlay:

         -O    --no-overlays
                 do not display overlays

         +O    --display-overlay  [n]umber: integer
                 display overlay n (0..16, 0=all, default: +O 0)

         +Omr  --ovl-replace
                 use overlay mode "Replace"
                 (default for Graphic overlays)

         +Omt  --ovl-threshold
                 use overlay mode "Threshold Replace"

         +Omc  --ovl-complement
                 use overlay mode "Complement"

         +Omv  --ovl-invert
                 use overlay mode "Invert Bitmap"

         +Omi  --ovl-roi
                 use overlay mode "Region of Interest"
                 (default for ROI overlays)

         +Osf  --set-foreground  [d]ensity: float
                 set overlay foreground density (0..1, default: 1)

         +Ost  --set-threshold  [d]ensity: float
                 set overlay threshold density (0..1, default: 0.5)

       display LUT transformation:

         +Dm   --monitor-file  [f]ilename: string
                 calibrate output according to monitor characteristics
                 defined in f

         +Dp   --printer-file  [f]ilename: string
                 calibrate output according to printer characteristics
                 defined in f

         +Da   --ambient-light  [a]mbient light: float
                 ambient light value (cd/m^2, default: file f)

         +Di   --illumination  [i]llumination: float
                 illumination value (cd/m^2, default: file f)

         +Dn   --min-density  [m]inimum optical density: float
                 Dmin value (default: off, only with +Dp)

         +Dx   --max-density  [m]aximum optical density: float
                 Dmax value (default: off, only with +Dp)

         +Dg   --gsd-function
                 use GSDF for calibration (default for +Dm/+Dp)

         +Dc   --cielab-function
                 use CIELAB function for calibration

       compatibility:

         +Ma   --accept-acr-nema
                 accept ACR-NEMA images without photometric
                 interpretation

         +Mp   --accept-palettes
                 accept incorrect palette attribute tags
                 (0028,111x) and (0028,121x)

         +Mc   --check-lut-depth
                 check 3rd value of the LUT descriptor, compare
                 with expected bit depth based on LUT data

         +Mm   --ignore-mlut-depth
                 ignore 3rd value of the modality LUT descriptor,
                 determine bits per table entry automatically

         +Mv   --ignore-vlut-depth
                 ignore 3rd value of the VOI LUT descriptor,
                 determine bits per table entry automatically

       TIFF format:

         +Tl   --compr-lzw
                 LZW compression (default)

         +Tr   --compr-rle
                 RLE compression

         +Tn   --compr-none
                 uncompressed

         +Pd   --predictor-default
                 no LZW predictor (default)

         +Pn   --predictor-none
                 LZW predictor 1 (no prediction)

         +Ph   --predictor-horz
                 LZW predictor 2 (horizontal differencing)

         +Rs   --rows-per-strip  [r]ows: integer (default: 0)
                 rows per strip, default 8K per strip

       PNG format:

         +il   --interlace
                 create interlaced file (default)

         -il   --nointerlace
                 create non-interlaced file

         +mf   --meta-file
                 create PNG file meta information (default)

         -mf   --meta-none
                 no PNG file meta information

       other transformations:

         +G    --grayscale
                 convert to grayscale if necessary

         +P    --change-polarity
                 change polarity (invert pixel output)

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


   output options
       general:

         -im   --image-info
                 print image details (requires verbose mode)

         -o    --no-output
                 do not create any output (useful with -im)

       image format:

         +op   --write-raw-pnm
                 write 8-bit binary PGM/PPM (default for files)

         +opb  --write-8-bit-pnm
                 write 8-bit ASCII PGM/PPM (default for stdout)

         +opw  --write-16-bit-pnm
                 write 16-bit ASCII PGM/PPM

         +opn  --write-n-bit-pnm  [n]umber: integer
                 write n-bit ASCII PGM/PPM (1..32)

         +ob   --write-bmp
                 write 8-bit (monochrome) or 24-bit (color) BMP

         +obp  --write-8-bit-bmp
                 write 8-bit palette BMP (monochrome only)

         +obt  --write-24-bit-bmp
                 write 24-bit truecolor BMP

         +obr  --write-32-bit-bmp
                 write 32-bit truecolor BMP

         +ot   --write-tiff
                 write 8-bit (monochrome) or 24-bit (color) TIFF

         +on   --write-png
                 write 8-bit (monochrome) or 24-bit (color) PNG


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

        1 = free scaling algorithm with interpolation from pbmplus toolkit
        2 = free scaling algorithm with interpolation from ct magazine
        3 = magnification algorithm with bilinear interpolation  from  Eduard
         Stanescu
        4  =  magnification  algorithm with bicubic interpolation from Eduard
         Stanescu
       The  --write-tiff  option  is  only  available  when  DCMTK  has   been
       configured  and  compiled  with  support  for the external libtiff TIFF
       library. The availability of the TIFF compression  options  depends  on
       the  libtiff  configuration.  In particular, the patented LZW algorithm
       may not be available.
       The --write-png option is only available when DCMTK has been configured
       and  compiled  with support for the external libpng PNG library. Option
       --interlace enables progressive image view while loading the PNG  file.
       Only  a  few  applications  take  care of the meta info (TEXT) in a PNG
       file.
TRANSFER SYNTAXES
       dcml2pnm supports the following transfer syntaxes for  input  (dcmfile-
       in):

       LittleEndianImplicitTransferSyntax             1.2.840.10008.1.2
       LittleEndianExplicitTransferSyntax             1.2.840.10008.1.2.1
       DeflatedExplicitVRLittleEndianTransferSyntax   1.2.840.10008.1.2.1.99 (*)
       BigEndianExplicitTransferSyntax                1.2.840.10008.1.2.2
       JPEGLSLosslessTransferSyntax                   1.2.840.10008.1.2.4.80
       JPEGLSLossyTransferSyntax                      1.2.840.10008.1.2.4.81
       RLELosslessTransferSyntax                      1.2.840.10008.1.2.5
       (*) if compiled with zlib support enabled
LOGGING
       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
       <etcdir>/logger.cfg).
COMMAND LINE
       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
       behaviour  conforms  to  the  standard  evaluation rules of common Unix
       shells.
       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  to   summarize   common
       combinations  of  options/parameters  and  avoids longish and confusing
       command lines (an example is provided in file <datadir>/dumppat.txt).
ENVIRONMENT
       The dcml2pnm 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  behaviour  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.
FILES
       <datadir>/camera.lut - sample characteristics file of a camera
       <datadir>/monitor.lut - sample characteristics file of a monitor
       <datadir>/printer.lut - sample characteristics file of a printer
       <datadir>/scanner.lut - sample characteristics file of a scanner
SEE ALSO
       dcm2pnm(1), img2dcm(1)
COPYRIGHT
       Copyright  (C)  2001-2010  by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
       Germany.



Version 3.6.0                     6 Jan 2011                       dcml2pnm(1)
