This module contains classes that convert between uncompressed and JPEG-LS compressed representations (transfer syntaxes) of a DICOM image object. Both lossless and near-lossless JPEG-LS processes are supported. This module implements a family of codecs that are derived from class DcmCodec and can be registered in the codec list maintained in module dcmdata.
The main interface classes are:
Tools
This module contains the following command line tools:
Examples
The following example shows how to compress a DICOM image file with lossless JPEG-LS:
{
{
}
}
static void cleanup()
deregisters encoders.
static void registerCodecs(Uint16 jpls_t1=0, Uint16 jpls_t2=0, Uint16 jpls_t3=0, Uint16 jpls_reset=0, OFBool preferCookedEncoding=OFTrue, Uint32 fragmentSize=0, OFBool createOffsetTable=OFTrue, JLS_UIDCreation uidCreation=EJLSUC_default, OFBool convertToSC=OFFalse, DJLSCodecParameter::interleaveMode jplsInterleaveMode=DJLSCodecParameter::interleaveDefault, OFBool useFFbitstreamPadding=OFTrue)
registers encoders for all supported JPEG-LS processes.
representation parameter for JPEG-LS
Definition: djrparam.h:32
a class handling the DICOM dataset format (files without meta header)
Definition: dcdatset.h:42
OFCondition chooseRepresentation(const E_TransferSyntax repType, const DcmRepresentationParameter *repParam)
select a specific representation (compressed or uncompressed) of the dataset and create the represent...
virtual OFBool canWriteXfer(const E_TransferSyntax newXfer, const E_TransferSyntax oldXfer=EXS_Unknown)
check if this DICOM object can be encoded in the given transfer syntax.
a class representing a list of DICOM elements in which each element has a different tag and elements ...
Definition: dcitem.h:48
OFBool good() const
check if the status is OK.
Definition: ofcond.h:293
@ EXS_JPEGLSLossless
JPEG-LS (lossless)
Definition: dcxfer.h:89
The following example shows how to decompress a JPEG-LS compressed DICOM image file:
{
{
}
}
static void registerCodecs(JLS_UIDCreation uidcreation=EJLSUC_default, JLS_PlanarConfiguration planarconfig=EJLSPC_restore, OFBool ignoreOffsetTable=OFFalse, OFBool forceSingleFragmentPerFrame=OFFalse)
registers decoder for all supported JPEG-LS processes.
static void cleanup()
deregisters decoders.
@ EXS_LittleEndianExplicit
Explicit VR Little Endian.
Definition: dcxfer.h:45
Legal Remark
Please note that Hewlett Packard claims to own patents that apply to JPEG-LS. Hewlett Packard grants free licenses for conformant implementations of JPEG-LS. OFFIS as the author of the DCMTK toolkit has obtained such a license, but depending on your national legislations companies that use DCMTK's JPEG-LS codec may need to also acquire a license. Read more at http://www.hpl.hp.com/loco/ if you intend to use this module for commercial purposes.