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<H1>Gdcm News</a></H1>
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<HR size="1"><ADDRESS style="align: right;"></ADDRESS>
<H2>
We know the following are missing; don't loose time looking for them ...<br>
We know they could be helpfull. We shall add them some day.<br>
Any contribution is welcome.
-
<UL>
- <LI> gdcm doesn't read yet JPEG-LS and JPEG2000 encoded files.
- <LI> Allow user to tell <TT>gdcm::Document</TT> constructor he doesn't
- want to deal with <TT>SeqEntry</TT (every time it's possible)
- <LI> Allow user to tell <TT>gdcm::Document</TT> constructor he doesn't
- want to deal with <TT>Shadow groups</TT>
- <LI> Allow user to tell <TT>gdcm::Document</TT> constructor he just wants
- to load a given list of <TT>DocEntries</TT> (to save CPU time and RAM
- space)
- <LI> Allow user to tell the Writer he doesn't want to write down
+<LI> Decoders
+ <UL>
+ <LI> gdcm doesn't read yet <TT>JPEG-LS</TT> encoded files.
+ <UL>
+ We said '<TT>JPEG-LS</TT>', not Lossless Jpeg ...<br>
+ [<TT>JPEG-LS</TT> is the basis for new lossless/near-lossless compression
+ standard for continuous-tone images intended for <TT>JPEG2000</TT>.
+ The standard is based on the LOCO-I algorithm
+ (LOw COmplexity LOssless COmpression for Images)
+ developed at Hewlett-Packard Laboratories]
+ </UL>
+ <LI> gdcm doesn't read yet all <TT>JPEG2000</TT> encoded files.
+ <UL>
+ But we are working on it (a lot of troubles with Jasper).
+ Update: as of Oct 10 2005, we are currently investigating another library:
+ openjpeg. The problem still exist for this library but one of the author
+ is currently working on it:
+ http://www.openjpeg.org/forum/viewtopic.php?t=18
+ </UL>
+ <LI> gdcm doesn't read yet <TT>MPEG2</TT> encoded files.
+
+ </UL>
+ <LI>Reader
+ <UL>
+ <LI> Allow user to tell <TT>gdcm::Document</TT> constructor he just wants
+ to load a given list of <TT>DocEntries</TT>
+ (to save CPU time and RAM space)
+ <LI> Allow 'frame by frame' reading (should be helpfull for huge
+ multiframe images)
+ <LI> Allow subvolume selection / frames selection before reading.
+ <LI> Expose Read/Decompression mechanisms to allow user getting
+ information from <tt>DICOMDIR</TT> <br> -or from his own Data Base-
+ and reading his images without parsing
+ the header, one more time.
+ </UL>
+ <LI>Writer
+ <UL>
+ <LI> Allow user to tell the Writer he doesn't want to write down
<TT>SeqEntry</TT> (if any)
- <LI> Allow user to tell the Writer he doesn't want to write down
+ <LI> Allow user to tell the Writer he doesn't want to write down
<TT>Shadow groups</TT> (if any)
- <LI> <TT>Icon Image</TT> management (Read and Write)
- <LI> <TT>DICOMDIR</TT> full management (not limited to
+ <LI> Allow user to tell the Writer which compression mode he wants<br>
+ (Right now, no one is available)
+ <LI> Allow user to tell the Writer he wants to split a
+ <TT>Multiframe</TT> image into a serie of
+ <TT>Single frame</TT> images.
+ <LI> Allow user to tell the Writer he wants to agregate a
+ Serie of <TT>Single frame</TT> images into a
+ <TT>Multiframe</TT> image.
+ </UL>
+<LI>Reader / Writer
+ <UL>
+ <LI> Full <TT>Icon Image</TT> management (Read and Write)
+ <LI> Full <TT>Overlays</TT> management (Read and Write) <br>
+ both for '<TT>ACR-NEMA</TT> style' (using groups <TT>0x6000</TT>
+ and next) and '<TT>DICOM V3</TT> style' (using Sequences)
+ </UL>
+<LI> <TT>DICOMDIR</TT>
+ <UL>
+ <LI> <TT>DICOMDIR</TT> full management (not limited to
<TT> PATIENT</TT>/<TT>STUDY</TT>/<TT>SERIE</TT>/<TT>IMAGE</TT>)
- <LI> Allow user to add an Entry to the default entry list, before
+ <LI> Allow user to add an entry (belonging to the file header Dicom
+ entries)to the default entry list, before
making a <TT>DICOMDIR</TT> from a root directory
- <LI> <TT>DICOMDIR</TT> anonymiser (<TT>Load</TT> and <TT>Noload</TT> mode)
- <LI> 16-bits-LUT full Management
- <LI> User friendly management of <TT>Rescale Slope</TT> and
+ <LI> Allow user to add an entry of his owns (for instance an <TT>Icon</TT>
+ to each image, or to each Serie).
+ </UL>
+<LI> SerieHelper
+ <UL>
+
+ <LI> An accurate <TT>SerieHelper</TT> <br>
+ Right now <TT>SerieHelper</TT> only works on 'bona fide Series', and
+ breaks on wrongly forged Series.<br>
+ We are still looking for any heuristics...
+ <LI> A <TT>SerieHelper</TT> that would use the <TT>DICOMDIR</TT> (if any)
+ instead of parsing all the files within the Root Directory
+ </UL>
+<LI> Other
+ <UL>
+ <LI> 16-bits-LUT full Management
+ <LI> User friendly management of <TT>Rescale Slope</TT> and
<TT>Rescale Intercept</TT>
- <LI> Allow parsing the <TT>Shadow groups</TT> against a user supplied
- private <TT>Dicom Dictionary</TT> (pfff!...)
- <LI> An accurate <TT>SerieHelper</TT>
+ <LI> Allow manual adjunction / automatic recognition (pfff!...)
+ of the private <TT>Dicom Dictionary</TT>
+ to be used to parse <TT>Shadow groups</TT> against.
+ </UL>
</UL>
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<HR size="1"><ADDRESS style="align: right;"></ADDRESS>
<H2>
<UL>
<LI>
<a href="uml-gdcm.pdf">gdcm UML Class Diagram</a> current version.
-
- <LI>
+ <br><br>
</UL>
-
+ <LI> <A HREF="News.html#missing">Missing Features</a>
<LI> New Features
<UL>
- <LI>Both <TT>vtkgdcmViewer</TT> and <TT>vtkgdcmViewer2</TT>
- are available to allow easy displaying of single/multiframe
- GreyLevel/RGB/PaletteColor images
+ <LI> Add the methods
+ <TT>gdcm::Dict:AddDict(std::string fullPathPrivateDictionaryFileName)</TT>
+ <br>and<br>
+ <TT>gdcm::Dict::RemoveDict(std::string fullPathPrivateDictionaryFileName)</TT>
+ <br>
+ to allow user to choose the 'Private Dictionary' he wants to work with.
+ <br>
+ One can dream about a better API;<br>
+ 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.
+ <br><br>
+ <LI>
+ <TT>PrintFile</TT> has now a new command line argument manager option :<br>
+ <TT>dict=fullPathNamePrivateDictionaryFile</TT><br>
+ to allow user to see with no extra coding what differences
+ makes the use or not of a private Dicom Dictionary.<br>
+ e.g. : use it as follow <br>
+ <TT>PrintFile filein=myGEdicomFile.dcm
+ dict=/user/userName/gdcm/Dicts/GEMS-Advance.dic</TT>
+ <br><br>
+ <LI>
+ (Not a great one ...)
+ Stupid method names : <br><TT>DicomDir::WriteDicomDir()</TT>
+ and <TT>DicomDir::AnonymizeDicomDir()</TT> <br>replaced by : <br>
+ <TT>DicomDir::Write()</TT>
+ and <TT>DicomDir::Anonymize()</TT>
+ <br><br>
+ <LI><TT>
+ void Document::AddForceLoadElement(uint16_t group, uint16_t elem);
+ </TT><br>
+ allows user to tell <TT>gdcm::Document</TT> Loader he wants
+ to force the loading of a given set of <TT>DocEntries</TT>,
+ even if their length exceeds the current
+ <TT>MAX_SIZE_LOAD_ELEMENT_VALUE</TT>.
+ <br><br>
+ <LI>
+ Many users expect from <TT>vtkGdcmReader</TT> it 'orders' the images
+ (that's the job of <TT>gdcm::SerieHelper</TT> ...)<br>
+ When user <b>knows</b> the files with same Serie UID
+ have same sizes, same 'pixel' type, same color convention, ...
+ the right way to proceed is as follow :
+ <pre>
+ 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();
+ </pre>
+ You can see a full example in <TT>vtk/vtkgdcmSerieViewer.cxx</TT><br>
+ e.g.<br>
+
+ <TT>vtkgdcmSerieViewer dirname=Dentist mirror</TT><br>
+ <TT>vtkgdcmSerieViewer dirname=Dentist reverse</TT><br>
+ <TT>vtkgdcmSerieViewer dirname=Dentist reverse topdown</TT><br>
+ </pre>
+ <br>
+
+ <LI> <TT>vtkGdcmReader::SetUserFunction (userSuppliedFunction)</TT><br>
+ with :<br>
+ <TT>void userSuppliedFunction(uint8_t *imageData, File *f);</TT><br>
+ allows user to reorganize the pixels of each image just after reading
+ it (to mirror, or topdown the image, for instance)<br>
+ Note : <TT>uint8_t *</TT> doesn't mean it works only on 8 Bits images.
+ <br> It's for prototyping. Feel free to cast it.
+ <br><br>
+ <LI> <TT>
+ SerieHelper::SetUserLessThanFunction(userSuppliedComparisonFunction)
+ </TT><br> with : <br>
+ <TT>bool userSuppliedComparisonFunction(File *, File *);</TT><br>
+ allows user -when he knows more about his files than gdcm does-
+ to give his own comparison function.
+ <LI> <TT>SerieHelper::SetSortOrderToReverse</TT> allows user to ask
+ to sort the Files reverse order.
+ <LI> <TT>SerieHelper::AddRestriction</TT> has now a new constructor<br>
+ <TT>AddRestriction(group, element, value, operator);</TT><br>
+ allows user to exclude some files from the sorting, according to
+ any comparison operator <br>
+ (<TT>GDCM_EQUAL</TT>, <TT>GDCM_DIFFERENT</TT>,
+ <TT>GDCM_GREATER</TT>, <TT>GDCM_GREATEROREQUAL</TT>,
+ <TT>GDCM_LESS</TT>, <TT>GDCM_LESSOREQUAL</TT>), not only on the
+ equality.
+ <br><br>
+ <LI> <TT>AnonymizeNoLoad</TT> used with <TT>dirin=inputDirectoryName</TT>
+ anonymizes all the files within the given Directory.
+ <br>
+ User may also choose extra elements he wants to rub out: <br>
+ <TT>rubout=listOfElementsToRubOut</TT><br>
+ with <tt>listOfElementsToRubOut : group1-elem1,group2-elem2,
+ ...</TT> (in hexa, no space within the list )
+ <br><br>
+ <LI> <TT>gdcm::SerieHelper()</TT> has a new method
+ <TT>void AddGdcmFile(File *header)</TT>, that allows aware user to
+ create a '<TT>FileList</TT>' (actually a
+ <TT>std::vector< File* > </TT>).<br>
+ The <TT>FileList</TT> created this way will be the
+ 'first one' in the <TT>gdcm::FileHelper()</TT> (retrieve it with
+ <TT>FileList *GetFirstCoherentFileList()</TT> ).<br>
+ It may be sorted using <TT>OrderFileList</TT>.<br>
+ No 'coherence check' will be performed on this <TT>FileList</TT>
+ before sorting.<br>
+ It may be passed to a <TT>vtkGdcmReader</TT>
+ (to avoid parsing twice the files)
+ <br><br>
+ <LI> <TT>vtkGdcmReader</TT> can now get the result of
+ <TT>gdcm::SerieHelper</TT> (to avoid parsing twice the files)<br>
+ Proceed as follow :<br>
+ <pre>
+ gdcmSerieHelper *sh = new gdcmSerieHelper();
+ sh->SetDirectory(myImageDirectory, true);
+ gdcmFileList *l = s->GetFirstCoherentFileList();
+ s->OrderFileList(l);
+ vtkGdcmReader *gr = new vtkGdcmReader();
+ gr->SetCoherentFileList(l);
+ gr->Update();
+ </pre>
+ This works with a directory that contains only one '<TT>Serie</TT>'
+ (same <TT>Serie UID</TT> for all the images).<br>
+ If it contains more than one <TT>Serie</TT>, you'll have to loop
+ on the Series, using <TT>GetNextCoherentFileList()</TT>;<br>
+ It will be up to the user to delete the <TT>gdcm::File</TT>.
+ <br><br>
+ See <TT>vtkgdcmSerieViewer</TT> for an example.
+ <br><br>
+ <LI> Both <TT>vtkgdcmViewer</TT> and <TT>vtkgdcmViewer2</TT>
+ are available to allow easy displaying of single/multiframe
+ GreyLevel/RGB/PaletteColor images<br><br>
+ <LI> <TT>DICOMDIR</TT> anonymiser (<TT>Load</TT> and <TT>Noload</TT> mode)
+ <br><br>
+ <LI> Because the <TT>gdcm::DicomDir::Load()</TT> method may be used
+ either for loading an already made <TT>DICOMDIR</TT> file or for
+ parsing all the dicom files with a given root directory we
+ syntaxically separated the operations: <br>
+ For loading an already made <TT>DICOMDIR</TT> file, use : <br>
+ <pre>
+ gdcm::DicomDir *d = new gdcm::DicomDir();
+ d->SetFileName(fileName);
+ d->Load( );
+ </pre>
+
+ For parsing all the dicom files within a given root directory, use :<br>
+ <pre>
+ gdcm::DicomDir *d = new gdcm::DicomDir();
+ d->SetDirectoryName(dirName);
+ d->Load( )
+ </pre>
+
+ <b>Don't</b> use any longer old deprecated style: <br>
+ <TT>
+ gdcm::DicomDir *d = new gdcm::DicomDir();<br>
+ d->SetParseDir(true); // </TT>or <TT>d->SetParseDir(false);<br>
+ d->Load( fileName );<br>
+ </TT>
+ <br>
+ <LI> User is now allowed to tell <TT>gdcm::Document</TT> constructor
+ he doesn't want to deal with <TT>SeqEntry</TT>
+ (every time it's possible, i.e for 'true length' Sequences) <br>
+ and/or he doesn't want to deal with <TT>Shadow groups</TT>
+ (every time it's possible i.e. when element <TT>0x0000</TT>
+ exists for this Group) <br>
+ or he doesn't want to deal with <TT>SeqEntry</TT> that belong to a
+ <TT>Shadow group</TT> (every time it's possible
+ -'true length' Sequence-)<br>
+ use : <br>
+ <pre>
+ 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( );
+ </pre>
+ <b>Don't</b> use any longer old deprecated style: <br>
+ <TT>
+ gdcm::File *f = new gdcm::File(fileName);</TT> <br>
+ <br>
+ <LI> User is now allowed to tell <TT>gdcm::DicomDir</TT> constructor
+ he doesn't want to deal with <TT>SeqEntry</TT>
+ (every time it's possible, i.e for 'true length' Sequences) <br>
+ and/or he doesn't want to deal with <TT>Shadow groups</TT>
+ (every time it's possible i.e. when element <TT>0x0000</TT>
+ exists for this Group) <br>
+ or he doesn't want to deal with <TT>SeqEntry</TT> that belong to a
+ <TT>Shadow group</TT> (every time it's possible
+ -'true length' Sequence-)<br>
+ when he parses all the Dicom files within a given directory.<br>
+ use : <br>
+ <pre>
+ 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( );
+ </pre>
+ <b>Don't</b> use any longer old deprecated style: <br>
+ <TT>
+ gdcm::DicomDir *dcmdir = new gdcm::DicomDir(dirName, true);</TT><br>
+ <br>
</UL>
<LI> Bug fixes
<UL>
+ <LI> No more trouble when the 'endianess' switches within Sequences.
+ <LI> No more trouble with 'no length Sequences' belonging to a
+ <TT>Shadow Group</TT> when they are 'Implicit VR'.
<LI> The difference between <TT>MONOCHROME1</TT> (low values = bright,
high values = dark) and <TT>MONOCHROME2</TT> (low values = dark,
high values = bright) is now taken into account.<br>
It's no longer up to the user to change the pixels value
-
+ <LI> Writing a 'True Dicom' image after reading an <TT>ACR-NEMA</TT> image
+ does not request any longer from the user to build up
+ 'manually' the Meta Elements group (<TT>0x0002</TT>)
+ <LI> Old '24 Bits' <TT>ACR-NEMA</TT> are now correctly re-written
+ in <TT>DICOM V3</TT> mode.
+ <LI> Element <TT>0x0000</TT> of <TT>Shadow groups</TT> is always forced to be a
+ <TT>ValEntry</TT> and its <TT>VR</TT> is forced to <TT>UL</TT>
+ <br><br>
</UL>
<LI> A.P.I. breaking modifications (since previous version : <TT>1.0</TT>)
<UL>
- <LI>
-
+ <LI> NEVER more API breaking modifications !!!
+ <br><br>
</UL>
-
<LI> Known bugs
<UL>
- <LI> Writing a 'True Dicom' image after reading an ACR-NEMA image requests
- from the user to build up 'manually' the Meta Elements group (0002)
- <LI> Management, on Big Endian Processors, of unloaded BinEntries
- <LI> Old '24 Bits' ACR-NEMA are not correctly re-written in DICOM mode.
+ <LI> Use of <TT>Implicit Value Representation</TT> writting mode may
+ causes troubles, when there are some <TT>SQ</TT> belonging to a
+ <TT>Shadow Group</TT>. <br>
+ Better you use <TT>Explicit Value Representation</TT> writting mode ...
+ <LI> Troubles on 'Big endian' processors (i.e. Apple/Motorola, SunSparc
+ ...) when writting 16 Bits images.
+ <LI> Troubles on 64-bits processors.
</UL>
+
</UL>
+
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<HR size="1"><ADDRESS style="align: right;"></ADDRESS>
<H2>
</UL>
<LI> a <TT>gdcm::SeqEntry</TT>
</UL>
- <LI> Removal of useless accessors <TT>GetXxxByname</TT>, <TT>SetXxxByname</TT>
- <LI> Removal of accessors <TT>GetXxxByNumber</TT>, <TT>SetXxxByNumber</TT>,
- renamed as <TT>GetXxx</TT>, <TT>SetXxx</TT>
+ <LI> Removal of useless accessors <TT>GetXxxByname</TT>, <TT>SetXxxByname</TT>
+ <LI> Renaming of accessors <TT>GetXxxByNumber</TT>, <TT>SetXxxByNumber</TT>
+ as follow :
+ <UL>
+ <LI> <TT>GetEntryByNumber
+
+ --> GetEntryValue</TT>
+ <LI> <TT>GetEntryLengthByNumber --> GetEntryLength</TT>
+ <LI> <TT>GetEntryOffsetByNumber --> GetEntryOffset</TT>
+ <LI> <TT>GetEntryVRByNumber
+ --> GetEntryVR</TT>
+ <LI>
+ <LI> <TT>GetDocEntryByNumber
+ --> GetDocEntry</TT>
+ <LI> <TT>GetValEntryByNumber
+ --> GetValEntry</TT>
+ <LI> <TT>GetBinEntryByNumber
+ --> GetBinEntry</TT>
+ <LI> <TT>GetSeqEntryByNumber
+ --> GetSeqEntry</TT>
+ </UL>
</UL>
</UL>
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff