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dconvlum(1)


NAME

   dconvlum - Convert VeriLUM files to DCMTK display files

SYNOPSIS

   dconvlum in-file out-file [ambient]

DESCRIPTION

   Command  line  program  that  converts VeriLUM file with characteristic
   curve data (CCx_xx.dat) to a format used for the Barten  transformation
   in  this  toolkit.  VeriLUM  is  a calibration package from ImageSmiths
   consisting of a photometer (with serial RS232 connector) and a  Windows
   NT software.

PARAMETERS

   in-file   VeriLUM characteristic curve file to be converted

   out-file  DCMTK display file to be written

   ambient   ambient light (cd/m^2, floating point value)

NOTES

   The output file describing the characteristic curve of a display system
   (monitor) is a simple text file. Lines starting with a '#' are  treated
   as  comments  and  therefore  skipped  as  well  as  blank  lines. This
   conversion program creates such a file  automatically  (including  some
   comment  lines)  by  transforming the information stored in the VeriLUM
   file. The number following the magic word 'max' defines the maximum DDL
   value (e.g. 255 for 8 bit displays). This definition is required before
   the luminance data can be defined. Optionally the ambient  light  value
   can be specified in this file too. The floating point value (in candela
   per square meter) must follow the word  'amb'.  Finally  the  luminance
   values  are  defined for each corresponding DDL (digital driving level)
   value. The entries do not necessarily have to be ordered  or  complete,
   i.e.  there  can  be  less  than  'max' + 1 entries. Missing values are
   calculated by cubic spline interpolation.

   See DICOM standard part 14 for more details on display calibration  and
   Barten's model (including GSDF).

SEE ALSO

   dcmdspfn(1), dcm2pnm(1)

COPYRIGHT

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



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