State of the art
+
+ -
+ gdcm 1.1 UML Class Diagram version.
+
- User Documentation
+
- Developper
+ Documentation
+
- New Features
+
+ - Add the methods
+ gdcm::Dict:AddDict(std::string fullPathPrivateDictionaryFileName)
+
and
+ gdcm::Dict::RemoveDict(std::string fullPathPrivateDictionaryFileName)
+
+ to allow user to choose the 'Private Dictionary' he wants to work with.
+
+ One can dream about a better API;
+ This one allow right now anybody to see very easyly if the use
+ of a given private dicom dictionary is of any help or not.
+
+ -
+ PrintFile has now a new command line argument manager option :
+ dict=fullPathNamePrivateDictionaryFile
+ to allow user to see with no extra coding what differences
+ makes the use or not of a private Dicom Dictionary.
+ e.g. : use it as follow
+ PrintFile filein=myGEdicomFile.dcm
+ dict=/user/userName/gdcm/Dicts/GEMS-Advance.dic
+
+ -
+ (Not a great one ...)
+ Stupid method names :
DicomDir::WriteDicomDir()
+ and DicomDir::AnonymizeDicomDir()
replaced by :
+ DicomDir::Write()
+ and DicomDir::Anonymize()
+
+ -
+ void Document::AddForceLoadElement(uint16_t group, uint16_t elem);
+
+ allows user to tell gdcm::Document Loader he wants
+ to force the loading of a given set of DocEntries,
+ even if their length exceeds the current
+ MAX_SIZE_LOAD_ELEMENT_VALUE.
+
+ -
+ Many users expect from vtkGdcmReader it 'orders' the images
+ (that's the job of gdcm::SerieHelper ...)
+ When user knows the files with same Serie UID
+ have same sizes, same 'pixel' type, same color convention, ...
+ the right way to proceed is as follow :
+
+ gdcm::SerieHelper *sh= new gdcm::SerieHelper();
+ // if user wants *not* to load some parts of the file headers
+ sh->SetLoadMode(loadMode);
+
+ // if user wants *not* to load some files
+ sh->AddRestriction(group, element, value, operator);
+ sh->AddRestriction( ...
+ sh->SetDirectory(directoryWithImages);
+
+ // if user *knows* how to order his files
+ sh->SetUserLessThanFunction(userSuppliedComparisonFunction);
+ // or/and
+ // if user wants to sort reverse order
+ sh->SetSortOrderToReverse();
+
+ // here, we suppose only the first 'Single SerieUID' Fileset is of interest
+ // Just iterate using sh->NextSingleSerieUIDFileSet()
+ // if you want to get all of them
+ gdcm::FileList *l = sh->GetFirstSingleSerieUIDFileSet();
+
+ // if user is doesn't trust too much the files with same Serie UID
+ if ( !sh->IsCoherent(l) )
+ return; // not same sizes, or not same 'pixel type' -> stop
+
+ sh->OrderFileList(l); // sort the list
+
+ vtkGdcmReader *reader = vtkGdcmReader::New();
+ // if user wants to modify pixel order (Mirror, TopDown, ...)
+ // he has to supply the function that does the job
+ // (a *very* simple example is given in vtkgdcmSerieViewer.cxx)
+ reader->SetUserFunction (userSuppliedFunction);
+
+ // to pass a 'Single SerieUID' Fileset as produced by gdcm::SerieHelper
+ reader->SetCoherentFileList(l);
+ reader->Update();
+
+ You can see a full example in vtk/vtkgdcmSerieViewer.cxx
+ e.g.
+
+ vtkgdcmSerieViewer dirname=Dentist mirror
+ vtkgdcmSerieViewer dirname=Dentist reverse
+ vtkgdcmSerieViewer dirname=Dentist reverse topdown
+
+
+
+ - vtkGdcmReader::SetUserFunction (userSuppliedFunction)
+ with :
+ void userSuppliedFunction(uint8_t *imageData, File *f);
+ allows user to reorganize the pixels of each image just after reading
+ it (to mirror, or topdown the image, for instance)
+ Note : uint8_t * doesn't mean it works only on 8 Bits images.
+
It's for prototyping. Feel free to cast it.
+
+ -
+ SerieHelper::SetUserLessThanFunction(userSuppliedComparisonFunction)
+
with :
+ bool userSuppliedComparisonFunction(File *, File *);
+ allows user -when he knows more about his files than gdcm does-
+ to give his own comparison function.
+ - SerieHelper::SetSortOrderToReverse allows user to ask
+ to sort the Files reverse order.
+
- SerieHelper::AddRestriction has now a new constructor
+ AddRestriction(group, element, value, operator);
+ allows user to exclude some files from the sorting, according to
+ any comparison operator
+ (GDCM_EQUAL, GDCM_DIFFERENT,
+ GDCM_GREATER, GDCM_GREATEROREQUAL,
+ GDCM_LESS, GDCM_LESSOREQUAL), not only on the
+ equality.
+
+ - AnonymizeNoLoad used with dirin=inputDirectoryName
+ anonymizes all the files within the given Directory.
+
+ User may also choose extra elements he wants to rub out:
+ rubout=listOfElementsToRubOut
+ with listOfElementsToRubOut : group1-elem1,group2-elem2,
+ ... (in hexa, no space within the list )
+
+ - gdcm::SerieHelper() has a new method
+ void AddGdcmFile(File *header), that allows aware user to
+ create a 'FileList' (actually a
+ std::vector< File* > ).
+ The FileList created this way will be the
+ 'first one' in the gdcm::FileHelper() (retrieve it with
+ FileList *GetFirstCoherentFileList() ).
+ It may be sorted using OrderFileList.
+ No 'coherence check' will be performed on this FileList
+ before sorting.
+ It may be passed to a vtkGdcmReader
+ (to avoid parsing twice the files)
+
+ - vtkGdcmReader can now get the result of
+ gdcm::SerieHelper (to avoid parsing twice the files)
+ Proceed as follow :
+
+ gdcmSerieHelper *sh = new gdcmSerieHelper();
+ sh->SetDirectory(myImageDirectory, true);
+ gdcmFileList *l = s->GetFirstCoherentFileList();
+ s->OrderFileList(l);
+
+ vtkGdcmReader *gr = new vtkGdcmReader();
+ gr->SetCoherentFileList(l);
+ gr->Update();
+
+ This works with a directory that contains only one 'Serie'
+ (same Serie UID for all the images).
+ If it contains more than one Serie, you'll have to loop
+ on the Series, using GetNextCoherentFileList();
+ It will be up to the user to delete the gdcm::File.
+
+ See vtkgdcmSerieViewer for an example.
+
+ - Both vtkgdcmViewer and vtkgdcmViewer2
+ are available to allow easy displaying of single/multiframe
+ GreyLevel/RGB/PaletteColor images
+ - DICOMDIR anonymiser (Load and Noload mode)
+
+ - Because the gdcm::DicomDir::Load() method may be used
+ either for loading an already made DICOMDIR file or for
+ parsing all the dicom files with a given root directory we
+ syntaxically separated the operations:
+ For loading an already made DICOMDIR file, use :
+
+ gdcm::DicomDir *d = new gdcm::DicomDir();
+ d->SetFileName(fileName);
+ d->Load( );
+
+
+ For parsing all the dicom files within a given root directory, use :
+
+ gdcm::DicomDir *d = new gdcm::DicomDir();
+ d->SetDirectoryName(dirName);
+ d->Load( )
+
+
+ Don't use any longer old deprecated style:
+
+ gdcm::DicomDir *d = new gdcm::DicomDir();
+ d->SetParseDir(true); // or d->SetParseDir(false);
+ d->Load( fileName );
+
+
+ - User is now allowed to tell gdcm::Document constructor
+ he doesn't want to deal with SeqEntry
+ (every time it's possible, i.e for 'true length' Sequences)
+ and/or he doesn't want to deal with Shadow groups
+ (every time it's possible i.e. when element 0x0000
+ exists for this Group)
+ or he doesn't want to deal with SeqEntry that belong to a
+ Shadow group (every time it's possible
+ -'true length' Sequence-)
+ use :
+
+ gdcm::File *f = new gdcm::File();
+ f->SetLoadMode(NO_SEQ); | depending on what
+ f->SetLoadMode(NO_SHADOW); | you want *not*
+ f->SetLoadMode(NO_SEQ | NO_SHADOW);| to load from the
+ f->SetLoadMode(NO_SHADOWSEQ); | target file
+ f->SetFileName(fileName);
+ f->Load( );
+
+ Don't use any longer old deprecated style:
+
+ gdcm::File *f = new gdcm::File(fileName);
+
+ - User is now allowed to tell gdcm::DicomDir constructor
+ he doesn't want to deal with SeqEntry
+ (every time it's possible, i.e for 'true length' Sequences)
+ and/or he doesn't want to deal with Shadow groups
+ (every time it's possible i.e. when element 0x0000
+ exists for this Group)
+ or he doesn't want to deal with SeqEntry that belong to a
+ Shadow group (every time it's possible
+ -'true length' Sequence-)
+ when he parses all the Dicom files within a given directory.
+ use :
+
+ gdcm::DicomDir *f = new gdcm::DicomDir();
+ f->SetLoadMode(NO_SEQ); | depending on what
+ f->SetLoadMode(NO_SHADOW); | you want *not*
+ f->SetLoadMode(NO_SEQ | NO_SHADOW);| to load from the files
+ f->SetLoadMode(NO_SHADOWSEQ); | within the root directory
+ f->SetDirectoryName(rootDirectoryName);
+ f->Load( );
+
+ Don't use any longer old deprecated style:
+
+ gdcm::DicomDir *dcmdir = new gdcm::DicomDir(dirName, true);
+
+
+
+ - Bug fixes
+
+ - No more trouble when the 'endianess' switches within Sequences.
+
- No more trouble with 'no length Sequences' belonging to a
+ Shadow Group when they are 'Implicit VR'.
+
- The difference between MONOCHROME1 (low values = bright,
+ high values = dark) and MONOCHROME2 (low values = dark,
+ high values = bright) is now taken into account.
+ It's no longer up to the user to change the pixels value
+ - Writing a 'True Dicom' image after reading an ACR-NEMA image
+ does not request any longer from the user to build up
+ 'manually' the Meta Elements group (0x0002)
+
- Old '24 Bits' ACR-NEMA are now correctly re-written
+ in DICOM V3 mode.
+
- Element 0x0000 of Shadow groups is always forced to be a
+ ValEntry and its VR is forced to UL
+
+
+
+ - A.P.I. breaking modifications (since previous version : 1.0)
+
+ - NEVER more API breaking modifications !!!
+
+
+
+ - Known bugs
+
+
-
-
-For people who get this new release :
-
-We consider now that :
-- any dicom related file is a gdcm::Document.
-- a gdcm::Document can be :
- - a gdcm::File, if it contains pixel data,
- - a gdcm::DicomDir, if it contains only informations
- on the files in a given directory
-- in a gdcm::Document, there are gdcm::DocEntry, that can be :
- - gdcm::ValEntry (whose value is std::string representable
- i.e. character values, or integers),
- - gdcm::BinEntry (whose value is not std::string representable
- i.e. color palettes, overlays, icons , ...)
- - gdcm::Sequence (no proper 'value', but a set of gdcm::SQItems,
- composed of a set of gdc::DocEntry, recursively)
-- in a gdcm::DicomDir, we only deal, hierachically, with :
- - gdcmPatient
- - gdcmStudy
- - gdcmSerie
- - gdcmImage
-
+
+
+
+
+ - State of the art
+
+
+
+
- A.P.I. breaking modifications (since previous version : 0.6)
+
+ - Use of namespace : all the methods formerly named
+ className::gdcmXxx() are now named className::Xxx()
+
End user will have to call them as gdcm::className::Xxx()
+ - a gdcm::Document is now specialized in :
+
+ - gdcm::DicomDir
+
- gdcm::File
+
+ - a gdcm::DicomElementSet is composed of a set of
+ gdcm::DicomDocEntry
+
- a gdcm::DicomDocEntry can be :
+
+ - a gdcm::ContentEntry, specialized in :
+
+ - gdcm::ValEntry
+
- gdcm::BinEntry (no longer a specialization of
+ gdcm::ValEntry)
+
+ - a gdcm::SeqEntry
+
+ - Removal of useless accessors GetXxxByname, SetXxxByname
+
- Renaming of accessors GetXxxByNumber, SetXxxByNumber
+ as follow :
+
+ - GetEntryByNumber
+
+ --> GetEntryValue
+
- GetEntryLengthByNumber --> GetEntryLength
+
- GetEntryOffsetByNumber --> GetEntryOffset
+
- GetEntryVRByNumber
+ --> GetEntryVR
+
-
+
- GetDocEntryByNumber
+ --> GetDocEntry
+
- GetValEntryByNumber
+ --> GetValEntry
+
- GetBinEntryByNumber
+ --> GetBinEntry
+
- GetSeqEntryByNumber
+ --> GetSeqEntry
+
+
+
@@ -66,28 +606,40 @@ We consider now that :
This version will be used by Insight Tool Kit
- (ITK 1.10) at the beginning of 2005.
+ (ITK 2.0) at the beginning of 2005.
It's not yet packaged ...
+ - User Documentation"
+
- Developper Documentation"
- The new gdcmDocument class is a parent class of
gdcmHeader class and gdcmDicomDir class.
- Massive modifications in the Class Diagram :
- - Entries (gdcmEntry) are now separated into
- ValEntry and SeqEntry (whose VR =
- SQ)
-
- a gdcmDocument is_a gdcmElementSet,
- composed of a set of gdcmValEntry
- and gdcmSeqEntry
-
- a gdcmSeqEntry is considered as a set
- of gdcmSQItem
-
- Dicom Sequences (VR = SQ) are now dealt as tree-like
- structures within gdcmSQItem class.
- they are considered as a set of gdcmSQItems
- - a gdcmSQItem is_a gdcmElementSet
-
- - Improvement of the jpeg sub-library: jpeg
- compressed Dicom files (lossless and lossy)
- might be read (check-it out)
+
- any dicom related file is a gdcmDocument
+
- a gdcmDocument can be :
+
+ - a gdcmHeader, if it contains pixel data
+
- a gdcmDicomDir, if it contains only informations
+ on the files in a given directory
+
+
+ - a gdcmDocument is_a gdcmElementSet,
+ composed of a set of gdcmEntry separated into :
+
+ - gdcmValEntry
+ a specialization of gdcmValEntry, for 'non
+ std::string representable' values is
+ gdcmBinEntry
+ - gdcmSeqEntry (VR = SQ, i.e Dicom Sequences)
+ they are dealt as tree-like structures :
+ - a gdcmSeqEntry is considered as a set
+ of gdcmSQItem,
+ - a gdcmSQItem is_a gdcmElementSet, composed
+ of gdcmDocEntries, recursively
+
+
+