dconvlum(1) OFFIS DCMTK 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 (device 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) 1999-2010 by OFFIS e.V., Escherweg 2, 26121 Oldenburg, Germany.
Version 3.6.0 6 Jan 2011 dconvlum(1)
