1dcmdspfn(1) OFFIS DCMTK dcmdspfn(1)
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6 dcmdspfn - Export standard display curves to a text file
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9 dcmdspfn [options]
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12 Command line program converts a DCMTK monitor / camera / printer /
13 scanner characteristics file to tabbed text file describing the
14 characteristic curve (CC), the display function and the post-
15 standardized curve (PSC) for an 8 bit display. The 256 values of each
16 curve can be visualized by a common spread sheet program. Above that
17 the display curve (without CC and PSC) can also be computed for a
18 specified luminance/OD range (min/max) and a certain number of Device
19 Driving Levels (DDL).
20
22 dcmfile-in DICOM input filename to be dumped
23
25 general options
26 -h --help
27 print this help text and exit
28 --version
30 print version information and exit
31 --arguments
33 print expanded command line arguments
34 -q --quiet
36 quiet mode, print no warnings and errors
37 -v --verbose
39 verbose mode, print processing details
40 -d --debug
42 debug mode, print debug information
43 -ll --log-level [l]evel: string constant
45 (fatal, error, warn, info, debug, trace)
46 use level l for the logger
47 -lc --log-config [f]ilename: string
49 use config file f for the logger
50 input options
52 +Im --monitor-file [f]ilename: string
53 text file describing the monitor characteristics
54 +Ic --camera-file [f]ilename: string
56 text file describing the camera characteristics
57 +Ip --printer-file [f]ilename: string
59 text file describing the printer characteristics
60 +Is --scanner-file [f]ilename: string
62 text file describing the scanner characteristics
63 +Il --lum-range [m]in max: float
65 minimum and maximum luminance (cd/m^2)
66 +Io --od-range [m]in max: float
68 minimum and maximum optical density (OD),
69 automatically converted to luminance
70 creation options
72 +Ca --ambient-light [a]mbient light: float
73 ambient light value (cd/m^2, default: file f)
74 +Ci --illumination [i]llumination: float
76 illumination value (cd/m^2, default: file f)
77 +Dn --min-density [m]inimum optical density: float
79 Dmin value (default: off, only with +Ip and +Io)
80 +Dx --max-density [m]aximum optical density: float
82 Dmax value (default: off, only with +Ip and +Io)
83 +Cd --ddl-count [n]umber of DDLs: integer
85 number of Device Driving Levels
86 (default: 256, only with --lum/od-range)
87 +Cf --curve-fitting [n]umber: integer
89 use polynomial curve fitting algorithm with order n
90 (0..99, default: file setting or cubic spline)
91 output options
93 +Og --gsdf [f]ilename: string
94 write GSDF curve data to file f
95 +Oc --cielab [f]ilename: string
97 write CIELAB curve data to file f
98
100 The output file describing the CC, GSDF or CIELAB and PSC for an 8 bit
101 display system (monitor, camera, printer or scanner) is a simple text
102 file. Lines starting with a '#' are treated as comments and, therefore,
103 skipped as well as blank lines. An input file can for instance be
104 created by the command line tool dconvlum.
105 The ambient light value possibly defined in the characteristics file is
107 also used for the calculation. In this case the value is part of the
108 file comment header as well as the number of DDL (device driving level)
109 values, the absolute luminance range (measured in candela per square
110 meter) and the range of the JND index (just noticable difference) in
111 case of GSDF. Alternatively, the ambient light value can be specified
112 as a command line option. When setting the two luminance values instead
113 of reading a monitor characteristic file as input the luminance range
114 is linearly divided by the number of DDLs.
115 For printers and scanners the illumination can be specified in addition
117 to the reflected ambient light (both in the characteristics file and on
118 the command line). The header of the output file includes the minimum
119 and maximum Optical Density (OD) instead of the luminance range. Please
120 note that the OD values in the input file have to be ordered in
121 descending order (in contrast to the luminance values used for monitors
122 and cameras). The DDL value 0 always means black (darkest value) and
123 the maximum DDL value means white (brightest value, clear film).
124 The data folder contains sample characteristics file for monitors,
126 cameras, printers and scanners. See DICOM standard part 14 for more
127 details on display calibration and Barten's model (including GSDF).
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130 The level of logging output of the various command line tools and
131 underlying libraries can be specified by the user. By default, only
132 errors and warnings are written to the standard error stream. Using
133 option --verbose also informational messages like processing details
134 are reported. Option --debug can be used to get more details on the
135 internal activity, e.g. for debugging purposes. Other logging levels
136 can be selected using option --log-level. In --quiet mode only fatal
137 errors are reported. In such very severe error events, the application
138 will usually terminate. For more details on the different logging
139 levels, see documentation of module 'oflog'.
140 In case the logging output should be written to file (optionally with
142 logfile rotation), to syslog (Unix) or the event log (Windows) option
143 --log-config can be used. This configuration file also allows for
144 directing only certain messages to a particular output stream and for
145 filtering certain messages based on the module or application where
146 they are generated. An example configuration file is provided in
147 <etcdir>/logger.cfg).
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150 All command line tools use the following notation for parameters:
151 square brackets enclose optional values (0-1), three trailing dots
152 indicate that multiple values are allowed (1-n), a combination of both
153 means 0 to n values.
154 Command line options are distinguished from parameters by a leading '+'
156 or '-' sign, respectively. Usually, order and position of command line
157 options are arbitrary (i.e. they can appear anywhere). However, if
158 options are mutually exclusive the rightmost appearance is used. This
159 behaviour conforms to the standard evaluation rules of common Unix
160 shells.
161 In addition, one or more command files can be specified using an '@'
163 sign as a prefix to the filename (e.g. @command.txt). Such a command
164 argument is replaced by the content of the corresponding text file
165 (multiple whitespaces are treated as a single separator unless they
166 appear between two quotation marks) prior to any further evaluation.
167 Please note that a command file cannot contain another command file.
168 This simple but effective approach allows to summarize common
169 combinations of options/parameters and avoids longish and confusing
170 command lines (an example is provided in file <datadir>/dumppat.txt).
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173 <datadir>/camera.lut - sample characteristics file of a camera
174 <datadir>/monitor.lut - sample characteristics file of a monitor
175 <datadir>/printer.lut - sample characteristics file of a printer
176 <datadir>/scanner.lut - sample characteristics file of a scanner
177
179 dconvlum(1), dcod2lum(1)
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182 Copyright (C) 1999-2010 by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
183 Germany.
184Version 3.6.0 6 Jan 2011 dcmdspfn(1)