xenial (1) dcmdspfn.1.gz

Provided by: dcmtk_3.6.1~20150924-5_amd64 bug

NAME

       dcmdspfn - Export standard display curves to a text file

SYNOPSIS

       dcmdspfn [options]

DESCRIPTION

       Command line program converts a DCMTK monitor / camera / printer / scanner characteristics file to tabbed
       text file describing the characteristic curve (CC), the display function and the post-standardized  curve
       (PSC)  for  an  8  bit  display.  The 256 values of each curve can be visualized by a common spread sheet
       program. Above that the display curve (without  CC  and  PSC)  can  also  be  computed  for  a  specified
       luminance/OD range (min/max) and a certain number of Digital Driving Levels (DDL).

PARAMETERS

       dcmfile-in  DICOM input filename to be dumped

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
         +Im  --monitor-file  [f]ilename: string
                text file describing the monitor characteristics

         +Ic  --camera-file  [f]ilename: string
                text file describing the camera characteristics

         +Ip  --printer-file  [f]ilename: string
                text file describing the printer characteristics

         +Is  --scanner-file  [f]ilename: string
                text file describing the scanner characteristics

         +Il  --lum-range  [m]in max: float
                minimum and maximum luminance (cd/m^2)

         +Io  --od-range  [m]in max: float
                minimum and maximum optical density (OD),
                automatically converted to luminance

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

         +Ci  --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 +Ip and +Io)

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

         +Cd  --ddl-count  [n]umber of DDLs: integer
                number of Digital Driving Levels
                (default: 256, only with --lum/od-range)

         +Cf  --curve-fitting  [n]umber: integer
                use polynomial curve fitting algorithm with order n
                (0..99, default: file setting or cubic spline)

   output options
         +Og  --gsdf  [f]ilename: string
                write GSDF curve data to file f

         +Oc  --cielab  [f]ilename: string
                write CIELAB curve data to file f

NOTES

       The  output  file describing the CC, GSDF or CIELAB and PSC for an 8 bit display system (monitor, camera,
       printer or scanner) is a simple text file. Lines starting  with  a  '#'  are  treated  as  comments  and,
       therefore,  skipped as well as blank lines. An input file can for instance be created by the command line
       tool dconvlum.

       The ambient light value possibly defined in the characteristics file is also used for the calculation. In
       this  case  the  value  is  part of the file comment header as well as the number of DDL (digital driving
       level) values, the absolute luminance range (measured in candela per square meter) and the range  of  the
       JND  index  (just  noticeable  difference) in case of GSDF. Alternatively, the ambient light value can be
       specified as a command line option. When setting the two luminance values instead of  reading  a  monitor
       characteristic file as input the luminance range is linearly divided by the number of DDLs.

       For  printers  and  scanners the illumination can be specified in addition to the reflected ambient light
       (both in the characteristics file and on the command line). The header of the output  file  includes  the
       minimum  and  maximum Optical Density (OD) instead of the luminance range. Please note that the OD values
       in the input file have to be ordered in descending order (in contrast to the luminance  values  used  for
       monitors and cameras). The DDL value 0 always means black (darkest value) and the maximum DDL value means
       white (brightest value, clear film).

       The data folder contains sample characteristics file for monitors, cameras, printers  and  scanners.  See
       DICOM standard part 14 for more details on display calibration and Barten's model (including GSDF).

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 behavior 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 one to summarize common combinations of options/parameters  and
       avoids longish and confusing command lines (an example is provided in file <datadir>/dumppat.txt).

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

       dconvlum(1), dcod2lum(1)

       Copyright (C) 1999-2014 by OFFIS e.V., Escherweg 2, 26121 Oldenburg, Germany.