1dcmscale(1) OFFIS DCMTK dcmscale(1)
2
6 dcmscale - Scale DICOM images
7
9 dcmscale [options] dcmfile-in dcmfile-out
10
12 The dcmscale utility reads a DICOM image, scales it according to the
13 command line settings and writes back the DICOM image. This utility
14 only supports uncompressed and RLE compressed DICOM images.
15
17 dcmfile-in DICOM input filename to be scaled
18 dcmfile-out DICOM output filename to be written
20
22 general options
23 -h --help
24 print this help text and exit
25 --version
27 print version information and exit
28 --arguments
30 print expanded command line arguments
31 -q --quiet
33 quiet mode, print no warnings and errors
34 -v --verbose
36 verbose mode, print processing details
37 -d --debug
39 debug mode, print debug information
40 -ll --log-level [l]evel: string constant
42 (fatal, error, warn, info, debug, trace)
43 use level l for the logger
44 -lc --log-config [f]ilename: string
46 use config file f for the logger
47 input options
49 input file format:
50 +f --read-file
52 read file format or data set (default)
53 +fo --read-file-only
55 read file format only
56 -f --read-dataset
58 read data set without file meta information
59 input transfer syntax:
61 -t= --read-xfer-auto
63 use TS recognition (default)
64 -td --read-xfer-detect
66 ignore TS specified in the file meta header
67 -te --read-xfer-little
69 read with explicit VR little endian TS
70 -tb --read-xfer-big
72 read with explicit VR big endian TS
73 -ti --read-xfer-implicit
75 read with implicit VR little endian TS
76 processing options
78 scaling:
79 +a --recognize-aspect
81 recognize pixel aspect ratio (default)
82 -a --ignore-aspect
84 ignore pixel aspect ratio when scaling
85 +i --interpolate [n]umber of algorithm: integer
87 use interpolation when scaling (1..4, default: 1)
88 -i --no-interpolation
90 no interpolation when scaling
91 -S --no-scaling
93 no scaling, ignore pixel aspect ratio (default)
94 +Sxf --scale-x-factor [f]actor: float
96 scale x axis by factor, auto-compute y axis
97 +Syf --scale-y-factor [f]actor: float
99 scale y axis by factor, auto-compute x axis
100 +Sxv --scale-x-size [n]umber: integer
102 scale x axis to n pixels, auto-compute y axis
103 +Syv --scale-y-size [n]umber: integer
105 scale y axis to n pixels, auto-compute x axis
106 other transformations:
108 +C --clip-region [l]eft [t]op [w]idth [h]eight: integer
109 clip rectangular image region (l, t, w, h)
110 SOP Instance UID:
112 +ua --uid-always
114 always assign new SOP Instance UID (default)
115 +un --uid-never
117 never assign new SOP Instance UID
118 output options
120 output file format:
121 +F --write-file
123 write file format (default)
124 -F --write-dataset
126 write data set without file meta information
127 output transfer syntax:
129 +t= --write-xfer-same
131 write with same TS as input (default)
132 +te --write-xfer-little
134 write with explicit VR little endian TS
135 +tb --write-xfer-big
137 write with explicit VR big endian TS
138 +ti --write-xfer-implicit
140 write with implicit VR little endian TS
141 post-1993 value representations:
143 +u --enable-new-vr
145 enable support for new VRs (UN/UT) (default)
146 -u --disable-new-vr
148 disable support for new VRs, convert to OB
149 group length encoding:
151 +g= --group-length-recalc
153 recalculate group lengths if present (default)
154 +g --group-length-create
156 always write with group length elements
157 -g --group-length-remove
159 always write without group length elements
160 length encoding in sequences and items:
162 +e --length-explicit
164 write with explicit lengths (default)
165 -e --length-undefined
167 write with undefined lengths
168 data set trailing padding (not with --write-dataset):
170 -p= --padding-retain
172 do not change padding
173 (default if not --write-dataset)
174 -p --padding-off
176 no padding (implicit if --write-dataset)
177 +p --padding-create [f]ile-pad [i]tem-pad: integer
179 align file on multiple of f bytes and items on
180 multiple of i bytes
181
183 The following preferred interpolation algorithms can be selected using
184 the --interpolate option:
185 · 1 = free scaling algorithm with interpolation from pbmplus toolkit
187 · 2 = free scaling algorithm with interpolation from c't magazine
188 · 3 = magnification algorithm with bilinear interpolation from Eduard
189 Stanescu
190 · 4 = magnification algorithm with bicubic interpolation from Eduard
191 Stanescu
193 The level of logging output of the various command line tools and
194 underlying libraries can be specified by the user. By default, only
195 errors and warnings are written to the standard error stream. Using
196 option --verbose also informational messages like processing details
197 are reported. Option --debug can be used to get more details on the
198 internal activity, e.g. for debugging purposes. Other logging levels
199 can be selected using option --log-level. In --quiet mode only fatal
200 errors are reported. In such very severe error events, the application
201 will usually terminate. For more details on the different logging
202 levels, see documentation of module 'oflog'.
203 In case the logging output should be written to file (optionally with
204 logfile rotation), to syslog (Unix) or the event log (Windows) option
205 --log-config can be used. This configuration file also allows for
206 directing only certain messages to a particular output stream and for
207 filtering certain messages based on the module or application where
208 they are generated. An example configuration file is provided in
209 <etcdir>/logger.cfg).
211 All command line tools use the following notation for parameters:
212 square brackets enclose optional values (0-1), three trailing dots
213 indicate that multiple values are allowed (1-n), a combination of both
214 means 0 to n values.
215 Command line options are distinguished from parameters by a leading '+'
216 or '-' sign, respectively. Usually, order and position of command line
217 options are arbitrary (i.e. they can appear anywhere). However, if
218 options are mutually exclusive the rightmost appearance is used. This
219 behaviour conforms to the standard evaluation rules of common Unix
220 shells.
221 In addition, one or more command files can be specified using an '@'
222 sign as a prefix to the filename (e.g. @command.txt). Such a command
223 argument is replaced by the content of the corresponding text file
224 (multiple whitespaces are treated as a single separator unless they
225 appear between two quotation marks) prior to any further evaluation.
226 Please note that a command file cannot contain another command file.
227 This simple but effective approach allows to summarize common
228 combinations of options/parameters and avoids longish and confusing
229 command lines (an example is provided in file <datadir>/dumppat.txt).
231 The dcmscale utility will attempt to load DICOM data dictionaries
232 specified in the DCMDICTPATH environment variable. By default, i.e. if
233 the DCMDICTPATH environment variable is not set, the file
234 <datadir>/dicom.dic will be loaded unless the dictionary is built into
235 the application (default for Windows).
236 The default behaviour should be preferred and the DCMDICTPATH
237 environment variable only used when alternative data dictionaries are
238 required. The DCMDICTPATH environment variable has the same format as
239 the Unix shell PATH variable in that a colon (':') separates entries.
240 On Windows systems, a semicolon (';') is used as a separator. The data
241 dictionary code will attempt to load each file specified in the
242 DCMDICTPATH environment variable. It is an error if no data dictionary
243 can be loaded.
245 Copyright (C) 2002-2010 by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
246 Germany.
247Version 3.6.0 6 Jan 2011 dcmscale(1)