GDCM

Downloads: ← Older revision Revision as of 08:14, 18 September 2012 (2 intermediate revisions not shown)Line 30: Line 30: === PDF Version === === PDF Version === -* http://gdcm.sourceforge.net/2.2/gdcm-2.2.0.pdf+* ... [More] http://sourceforge.net/projects/gdcm/files/gdcm%202.x/GDCM%202.2.1/gdcm-2.2.1.pdf == Downloads == == Downloads == directly: directly: -* https://sourceforge.net/projects/gdcm/files/gdcm%202.x/GDCM%202.2.0/+* http://sourceforge.net/projects/gdcm/files/gdcm%202.x/GDCM%202.2.1/ or the parent directory: or the parent directory: -* https://sourceforge.net/projects/gdcm/files/gdcm%202.x/+* http://sourceforge.net/projects/gdcm/files/gdcm%202.x/ == tags == == tags == Line 44: Line 44: See here [[GDCM Release 2.2.0]] See here [[GDCM Release 2.2.0]]  +  +=== GDCM 2.2.1 (2012/09/18) ===  +  +See here [[GDCM Release 2.2.1]] {{GDCM/Template/Footer}} {{GDCM/Template/Footer}} [Less]

Downloads: ← Older revision Revision as of 08:14, 18 September 2012 (2 intermediate revisions not shown)Line 30: Line 30: === PDF Version === === PDF Version === -* http://gdcm.sourceforge.net/2.2/gdcm-2.2.0.pdf+* ... [More] http://sourceforge.net/projects/gdcm/files/gdcm%202.x/GDCM%202.2.1/gdcm-2.2.1.pdf == Downloads == == Downloads == directly: directly: -* https://sourceforge.net/projects/gdcm/files/gdcm%202.x/GDCM%202.2.0/+* http://sourceforge.net/projects/gdcm/files/gdcm%202.x/GDCM%202.2.1/ or the parent directory: or the parent directory: -* https://sourceforge.net/projects/gdcm/files/gdcm%202.x/+* http://sourceforge.net/projects/gdcm/files/gdcm%202.x/ == tags == == tags == Line 44: Line 44: See here [[GDCM Release 2.2.0]] See here [[GDCM Release 2.2.0]]  +  +=== GDCM 2.2.1 (2012/09/18) ===  +  +See here [[GDCM Release 2.2.1]] {{GDCM/Template/Footer}} {{GDCM/Template/Footer}} [Less]

What is gdcmData ?: ← Older revision Revision as of 18:42, 5 September 2012 Line 239: Line 239:   $ git clone git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData   $ git clone ... [More] git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData  +  +Note: if you use git clone --recursive (see [[Git]]) to retrieve GDCM, then you do not need to explicitely download gdcmData.  +  +=== What is gdcmData (advanced!) === All those DICOM files can be also be retrieved via sf.net file server: All those DICOM files can be also be retrieved via sf.net file server: [Less]

What is gdcmData ?: ← Older revision Revision as of 18:42, 5 September 2012 Line 239: Line 239:   $ git clone git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData   $ git clone ... [More] git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData  +  +Note: if you use git clone --recursive (see [[Git]]) to retrieve GDCM, then you do not need to explicitely download gdcmData.  +  +=== What is gdcmData (advanced!) === All those DICOM files can be also be retrieved via sf.net file server: All those DICOM files can be also be retrieved via sf.net file server: [Less]

What is gdcmData ?: ← Older revision Revision as of 18:42, 5 September 2012 Line 239: Line 239:   $ git clone git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData   $ git clone ... [More] git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData  +  +Note: if you use git clone --recursive (see [[Git]]) to retrieve GDCM, then you do not need to explicitely download gdcmData.  +  +=== What is gdcmData (advanced!) === All those DICOM files can be also be retrieved via sf.net file server: All those DICOM files can be also be retrieved via sf.net file server: [Less]

What is gdcmData ?: ← Older revision Revision as of 18:42, 5 September 2012 Line 239: Line 239:   $ git clone git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData   $ git clone ... [More] git://gdcm.git.sourceforge.net/gitroot/gdcm/gdcmData  +  +Note: if you use git clone --recursive (see [[Git]]) to retrieve GDCM, then you do not need to explicitely download gdcmData.  +  +=== What is gdcmData (advanced!) === All those DICOM files can be also be retrieved via sf.net file server: All those DICOM files can be also be retrieved via sf.net file server: [Less]

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← Older revision Revision as of 11:32, 9 July 2012 (3 intermediate revisions not shown)Line 166: Line 166: I am first modifying it to meet that criterion and then use an XSLT script to generate the XSD. I am first ... [More] modifying it to meet that criterion and then use an XSLT script to generate the XSD. Also, Direct infoset validation sounds feasible but slightly tricky. I am looking more into it. Also, Direct infoset validation sounds feasible but slightly tricky. I am looking more into it.  +  +  +==='''Module DICOM -> XML'''===  +  +===='''Overview'''====  +For printing to XML I have created a class XMLPrinter in MediaStorageAndFileFormat. I have also made a command line utility in Applications/Cxx.  +  +The main files which have been changed are -->  +  +* gdcmByteValue.h  +* gdcmByteValue.cxx  +* gdcmXMLPrinter.h  +* gdcmXMLPrinter.cxx  +* CMakeLists.txt(in MediaStorageAndFileFormat)  +* gdcmElement.h( commented an assert)  +* gdcmxml  +* CMakeLists.txt(in Applications/Cxx)  +  +: There were earlier changes in the DataSet and DataElement classes when I was adding code in those classes.  +But I have rectified those changes in my repository as well.  +  +: The files produced by gdcmxml are in strict compliance with the Native DICOM model.  +  +  +===='''Attribute Printing'''====  +  +: Attributes including Tag, VR, Keyword, PrivateCreator are printed with each DICOM data element. The keyword, VR are printed after lookup from relevant dict.  +DicomAttribute = element DicomAttribute {  +Tag, VR, Keyword?, PrivateCreator?,  +( BulkData | Value+ | Item+ | PersonName+ )?  +}  +  +eg.  +  +  +===='''Value Printing'''====  +  +Three New functions have been added in ByteValue class.  +  +These being --  + * void PrintPN_XML(std::ostream &os) const;  + * void PrintASCII_XML(std::ostream &os) const;  + * void PrintHex_XML(std::ostream &os) const;  +  +  +===='''Handling of PN'''====  +  +The PN VR is handled differently as prescribed in the standard. Alphabetic , Ideographic and Phonetic names have been handled with all components.  +PersonName = element PersonName {  +Number,  +element SingleByte { NameComponents }?,  +element Ideographic { NameComponents }?,  +element Phonetic  +{ NameComponents }?  +}  +  +NameComponents =  +element FamilyName {xsd:string}?,  +element GivenName {xsd:string}?,  +element MiddleName {xsd:string}?,  +element NamePrefix {xsd:string}?,  +element NameSuffix {xsd:string}?  +  +  +===='''Option to load Bulk Data'''====  +  +By default for VR's like OB, OW the Value is not loaded , only a <BulkData> child tag is created with UID attribute. As discussed this UID is created afresh for each element.  +  +If the user wants he can use the -B option to load the Value itself. This is turn Sets the PrintStyle to allow this to happen.  +However this is not recommended as this makes the the XML files difficult to parse as they become exceedingly huge.  +  +  +===='''Value Printing according to schema'''====  +  +Value tags equal to the VM are created and numbered serially, one for each instance of the value.  +  +Value = element Value { Number, xsd:string }  +  +eg.  +  +  +Fragments, Items have been handled separately. A separate function is there to handle VR::SQ.  +  +Item and Sequence Delimiter tags have also been added where length is undefined.  +  +  +===='''Invalid XML characters'''=====  +  +For the time being, at the time of printing keywords I have put checks to detect & < > ' " . Instead these characters have been escaped.  +(& was frequently used in the dict keywords)  +  +  +===='''Application :: gdcmxml'''====  +  +I have added an application which follows the template of the other apps like gdcmdump and has various options like print version, help etc.  +  +You can also set LoadBulkData option as discussed.  +  +===='''NativeDICOM namespace'''====  +  +Actually the schema referred to a namespace URL which did not exist.I had commented that in the schema when I had tried validating.  +I have now included the appropriate namespace "http://dicom.nema.org/PS3.19/models/NativeDICOM".  +  +  +===='''Validation'''====  +  +Using simple scripting I had converted all the files in gdcmData into XML. Then I used another small script to validate all of them with jing.  +There were minor issues like Hex Values Printing should be in upper case etc.  +While Printing Fragments and SQ , directly nesting Elements within each other is not allowed. So I had to first a write an Item tag(with a serial number)  +and then include the nested Data Elements within it.  +I have removed all the problems and all the XML files can be easily validated without issues.  +  +===='''Character Set Encoding'''====  +  +I have converted some Encodings into the appropriate XML ones.  +eg. "ISO_IR 100" -> "ISO-8859-1"  +I am working on some others like those in D Clunie's chartests.  +If the encoding does not match with those recognized by GDCM or the formatting is incorrect, the default printed is "UTF-8"  +The XML standard(http://www.w3.org/TR/REC-xml/#charencoding) says that "an XML processor is required to read only entities in the UTF-8 and UTF-16 encodings" although most read a variety of others as well.  +I presume this is the reason why dcmtk have stuck with UTF-8 as the default.  +  +  +===='''Testing'''====  +  +I have created various XML files from the DICOM files present in gdcmData. I have include some as a sample for you to view.  +  +  +===='''Issues'''====  +  +There was a slight issue in gdcmElement.h (which I was using for Printing Binary values).  +  +assert( idx < Length ) is not working , so I have commented it for the time being.  +  +PN handling was slightly tricky so it might be buggy at some places. The standard itself is not clear at some places.  +I have handled it separately and I feel it should be good enough.  +  +There has been some problem in writing ELSCINT1_JP2vsJ2K.dcm to XML.  +The rest of the files have no problem, both in conversion and validation.  +I am working on it and hopefully should resolve it soon.  +         == Refs == == Refs == [Less]