1dcmdspfn(1) OFFIS DCMTK dcmdspfn(1)
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6 dcmdspfn - Export standard display curves to a text file
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10 dcmdspfn [options]
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13 Command line program converts a DCMTK monitor / camera / printer /
14 scanner characteristics file to tabbed text file describing the
15 characteristic curve (CC), the display function and the post-
16 standardized curve (PSC) for an 8 bit display. The 256 values of each
17 curve can be visualized by a common spread sheet program. Above that
18 the display curve (without CC and PSC) can also be computed for a
19 specified luminance/OD range (min/max) and a certain number of Digital
20 Driving Levels (DDL).
21
23 dcmfile-in DICOM input filename to be dumped
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26 general options
27 -h --help
28 print this help text and exit
29 --version
31 print version information and exit
32 --arguments
34 print expanded command line arguments
35 -q --quiet
37 quiet mode, print no warnings and errors
38 -v --verbose
40 verbose mode, print processing details
41 -d --debug
43 debug mode, print debug information
44 -ll --log-level [l]evel: string constant
46 (fatal, error, warn, info, debug, trace)
47 use level l for the logger
48 -lc --log-config [f]ilename: string
50 use config file f for the logger
51 input options (mutually exclusive)
53 +Im --monitor-file [f]ilename: string
54 text file describing the monitor characteristics
55 +Ic --camera-file [f]ilename: string
57 text file describing the camera characteristics
58 +Ip --printer-file [f]ilename: string
60 text file describing the printer characteristics
61 +Is --scanner-file [f]ilename: string
63 text file describing the scanner characteristics
64 +Il --lum-range [m]in max: float
66 minimum and maximum luminance (cd/m^2)
67 +Io --od-range [m]in max: float
69 minimum and maximum optical density (OD),
70 automatically converted to luminance
71 creation options
73 +Ca --ambient-light [a]mbient light: float
74 ambient light value (cd/m^2, default: file f)
75 +Ci --illumination [i]llumination: float
77 illumination value (cd/m^2, default: file f)
78 +Dn --min-density [m]inimum optical density: float
80 Dmin value (default: off, only with +Ip and +Io)
81 +Dx --max-density [m]aximum optical density: float
83 Dmax value (default: off, only with +Ip and +Io)
84 +Cd --ddl-count [n]umber of DDLs: integer
86 number of Digital Driving Levels
87 (default: 256, only with --lum/od-range)
88 +Cf --curve-fitting [n]umber: integer
90 use polynomial curve fitting algorithm with order n
91 (0..99, default: file setting or cubic spline)
92 output options
94 +Og --gsdf [f]ilename: string
95 write GSDF curve data to file f
96 +Oc --cielab [f]ilename: string
98 write CIELAB curve data to file f
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101 The output file describing the CC, GSDF or CIELAB and PSC for an 8 bit
102 display system (monitor, camera, printer or scanner) is a simple text
103 file. Lines starting with a '#' are treated as comments and, therefore,
104 skipped as well as blank lines. An input file can for instance be
105 created by the command line tool dconvlum.
106 The ambient light value possibly defined in the characteristics file is
108 also used for the calculation. In this case the value is part of the
109 file comment header as well as the number of DDL (digital driving
110 level) values, the absolute luminance range (measured in candela per
111 square meter) and the range of the JND index (just noticeable
112 difference) in case of GSDF. Alternatively, the ambient light value can
113 be specified as a command line option. When setting the two luminance
114 values instead of reading a monitor characteristic file as input the
115 luminance range is linearly divided by the number of DDLs.
116 For printers and scanners the illumination can be specified in addition
118 to the reflected ambient light (both in the characteristics file and on
119 the command line). The header of the output file includes the minimum
120 and maximum Optical Density (OD) instead of the luminance range. Please
121 note that the OD values in the input file have to be ordered in
122 descending order (in contrast to the luminance values used for monitors
123 and cameras). The DDL value 0 always means black (darkest value) and
124 the maximum DDL value means white (brightest value, clear film).
125 The data folder contains sample characteristics file for monitors,
127 cameras, printers and scanners. See DICOM standard part 14 for more
128 details on display calibration and Barten's model (including GSDF).
129
131 The level of logging output of the various command line tools and
132 underlying libraries can be specified by the user. By default, only
133 errors and warnings are written to the standard error stream. Using
134 option --verbose also informational messages like processing details
135 are reported. Option --debug can be used to get more details on the
136 internal activity, e.g. for debugging purposes. Other logging levels
137 can be selected using option --log-level. In --quiet mode only fatal
138 errors are reported. In such very severe error events, the application
139 will usually terminate. For more details on the different logging
140 levels, see documentation of module 'oflog'.
141 In case the logging output should be written to file (optionally with
143 logfile rotation), to syslog (Unix) or the event log (Windows) option
144 --log-config can be used. This configuration file also allows for
145 directing only certain messages to a particular output stream and for
146 filtering certain messages based on the module or application where
147 they are generated. An example configuration file is provided in
148 <etcdir>/logger.cfg.
149
151 All command line tools use the following notation for parameters:
152 square brackets enclose optional values (0-1), three trailing dots
153 indicate that multiple values are allowed (1-n), a combination of both
154 means 0 to n values.
155 Command line options are distinguished from parameters by a leading '+'
157 or '-' sign, respectively. Usually, order and position of command line
158 options are arbitrary (i.e. they can appear anywhere). However, if
159 options are mutually exclusive the rightmost appearance is used. This
160 behavior conforms to the standard evaluation rules of common Unix
161 shells.
162 In addition, one or more command files can be specified using an '@'
164 sign as a prefix to the filename (e.g. @command.txt). Such a command
165 argument is replaced by the content of the corresponding text file
166 (multiple whitespaces are treated as a single separator unless they
167 appear between two quotation marks) prior to any further evaluation.
168 Please note that a command file cannot contain another command file.
169 This simple but effective approach allows one to summarize common
170 combinations of options/parameters and avoids longish and confusing
171 command lines (an example is provided in file <datadir>/dumppat.txt).
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174 <datadir>/camera.lut - sample characteristics file of a camera
175 <datadir>/monitor.lut - sample characteristics file of a monitor
176 <datadir>/printer.lut - sample characteristics file of a printer
177 <datadir>/scanner.lut - sample characteristics file of a scanner
178
180 dconvlum(1), dcod2lum(1)
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183 Copyright (C) 1999-2014 by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
184 Germany.
185Version 3.6.4 Thu Nov 29 2018 dcmdspfn(1)