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/*!
\if MANPAGES
\page dcmdrle Decode RLE-compressed DICOM file
\else
\page dcmdrle dcmdrle: Decode RLE-compressed DICOM file
\endif
\section synopsis SYNOPSIS
\verbatim
dcmdrle [options] dcmfile-in dcmfile-out
\endverbatim
\section description DESCRIPTION
The \b dcmdrle utility reads a RLE-compressed DICOM image (\e dcmfile-in),
decompresses the image data (i.e. conversion to a native DICOM transfer syntax)
and writes the converted image to an output file (\e dcmfile-out).
\section parameters PARAMETERS
\verbatim
dcmfile-in DICOM input filename to be converted
dcmfile-out DICOM output filename
\endverbatim
\section options OPTIONS
\subsection general_options general options
\verbatim
-h --help
print this help text and exit
--version
print version information and exit
--arguments
print expanded command line arguments
-q --quiet
quiet mode, print no warnings and errors
-v --verbose
verbose mode, print processing details
-d --debug
debug mode, print debug information
-ll --log-level [l]evel: string constant
(fatal, error, warn, info, debug, trace)
use level l for the logger
-lc --log-config [f]ilename: string
use config file f for the logger
\endverbatim
\subsection input_options input options
\verbatim
input file format:
+f --read-file
read file format or data set (default)
+fo --read-file-only
read file format only
-f --read-dataset
read data set without file meta information
# This option allows to decompress RLE compressed DICOM objects that have
# been stored as dataset without meta-header. Such a thing should not exist
# since the transfer syntax cannot be reliably determined without meta-header,
# but unfortunately it does.
\endverbatim
\subsection processing_options processing options
\verbatim
SOP Instance UID:
+ud --uid-default
keep same SOP Instance UID (default)
+ua --uid-always
always assign new UID
RLE byte segment order:
+bd --byte-order-default
most significant byte first (default)
+br --byte-order-reverse
least significant byte first
# This option allows to decompress RLE compressed DICOM files in which the
# order of byte segments is encoded in incorrect order. This only affects
# images with more than one byte per sample.
\endverbatim
\subsection output_options output options
\verbatim
output file format:
+F --write-file
write file format (default)
-F --write-dataset
write data set without file meta information
output transfer syntax:
+te --write-xfer-little
write with explicit VR little endian (default)
+tb --write-xfer-big
write with explicit VR big endian TS
+ti --write-xfer-implicit
write with implicit VR little endian TS
post-1993 value representations:
+u --enable-new-vr
enable support for new VRs (UN/UT) (default)
-u --disable-new-vr
disable support for new VRs, convert to OB
group length encoding:
+g= --group-length-recalc
recalculate group lengths if present (default)
+g --group-length-create
always write with group length elements
-g --group-length-remove
always write without group length elements
length encoding in sequences and items:
+e --length-explicit
write with explicit lengths (default)
-e --length-undefined
write with undefined lengths
data set trailing padding (not with --write-dataset):
-p= --padding-retain
do not change padding (default if not --write-dataset)
-p --padding-off
no padding (implicit if --write-dataset)
+p --padding-create [f]ile-pad [i]tem-pad: integer
align file on multiple of f bytes
and items on multiple of i bytes
\endverbatim
\section transfer_syntaxes TRANSFER SYNTAXES
\b dcmdrle supports the following transfer syntaxes for input
(\e dcmfile-in):
\verbatim
LittleEndianImplicitTransferSyntax 1.2.840.10008.1.2
LittleEndianExplicitTransferSyntax 1.2.840.10008.1.2.1
DeflatedExplicitVRLittleEndianTransferSyntax 1.2.840.10008.1.2.1.99 (*)
BigEndianExplicitTransferSyntax 1.2.840.10008.1.2.2
RLELosslessTransferSyntax 1.2.840.10008.1.2.5
\endverbatim
(*) if compiled with zlib support enabled
\b dcmdrle supports the following transfer syntaxes for output
(\e dcmfile-out):
\verbatim
LittleEndianImplicitTransferSyntax 1.2.840.10008.1.2
LittleEndianExplicitTransferSyntax 1.2.840.10008.1.2.1
BigEndianExplicitTransferSyntax 1.2.840.10008.1.2.2
\endverbatim
\section logging LOGGING
The level of logging output of the various command line tools and underlying
libraries can be specified by the user. By default, only errors and warnings
are written to the standard error stream. Using option \e --verbose also
informational messages like processing details are reported. Option
\e --debug can be used to get more details on the internal activity, e.g. for
debugging purposes. Other logging levels can be selected using option
\e --log-level. In \e --quiet mode only fatal errors are reported. In such
very severe error events, the application will usually terminate. For more
details on the different logging levels, see documentation of module "oflog".
In case the logging output should be written to file (optionally with logfile
rotation), to syslog (Unix) or the event log (Windows) option \e --log-config
can be used. This configuration file also allows for directing only certain
messages to a particular output stream and for filtering certain messages
based on the module or application where they are generated. An example
configuration file is provided in <em>\<etcdir\>/logger.cfg</em>).
\section command_line COMMAND LINE
All command line tools use the following notation for parameters: square
brackets enclose optional values (0-1), three trailing dots indicate that
multiple values are allowed (1-n), a combination of both means 0 to n values.
Command line options are distinguished from parameters by a leading '+' or '-'
sign, respectively. Usually, order and position of command line options are
arbitrary (i.e. they can appear anywhere). However, if options are mutually
exclusive the rightmost appearance is used. This behaviour conforms to the
standard evaluation rules of common Unix shells.
In addition, one or more command files can be specified using an '@' sign as a
prefix to the filename (e.g. <em>\@command.txt</em>). Such a command argument
is replaced by the content of the corresponding text file (multiple
whitespaces are treated as a single separator unless they appear between two
quotation marks) prior to any further evaluation. Please note that a command
file cannot contain another command file. This simple but effective approach
allows to summarize common combinations of options/parameters and avoids
longish and confusing command lines (an example is provided in file
<em>\<datadir\>/dumppat.txt</em>).
\section environment ENVIRONMENT
The \b dcmdrle utility will attempt to load DICOM data dictionaries specified
in the \e DCMDICTPATH environment variable. By default, i.e. if the
\e DCMDICTPATH environment variable is not set, the file
<em>\<datadir\>/dicom.dic</em> will be loaded unless the dictionary is built
into the application (default for Windows).
The default behaviour should be preferred and the \e DCMDICTPATH environment
variable only used when alternative data dictionaries are required. The
\e DCMDICTPATH environment variable has the same format as the Unix shell
\e PATH variable in that a colon (":") separates entries. On Windows systems,
a semicolon (";") is used as a separator. The data dictionary code will
attempt to load each file specified in the \e DCMDICTPATH environment variable.
It is an error if no data dictionary can be loaded.
\section see_also SEE ALSO
<b>dcmcrle</b>(1)
\section copyright COPYRIGHT
Copyright (C) 2002-2010 by OFFIS e.V., Escherweg 2, 26121 Oldenburg, Germany
*/
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