Module: $RCSfile: gdcmFileHelper.cxx,v $
Language: C++
- Date: $Date: 2005/11/03 08:46:03 $
- Version: $Revision: 1.78 $
+ Date: $Date: 2005/11/07 09:50:52 $
+ Version: $Revision: 1.79 $
Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
l'Image). All rights reserved. See Doc/License.txt or
/**
* \brief This method is called automatically, just before writting
* in order to produce a 'True Dicom V3' image
- * We cannot know *how* the user made the File (reading an old ACR-NEMA
- * file or a not very clean DICOM file ...)
+ * We cannot know *how* the user made the File :
+ * (reading an old ACR-NEMA file or a not very clean DICOM file ...)
*
* Just before writting :
* - we check the Entries
* - we push the sensitive entries to the Archive
* The writing process will restore the entries as they where before
* entering FileHelper::CheckMandatoryElements, so the user will always
- * see the entries just as he left them.
+ * see the entries just as they were before he decided to write.
* \note
* - Entries whose type is 1 are mandatory, with a mandatory value
* - Entries whose type is 1c are mandatory-inside-a-Sequence,
To be moved to User's guide / WIKI ?
+
-->'Media Storage SOP Class UID' (0x0002,0x0002)
-->'SOP Class UID' (0x0008,0x0016) are set to
[Secondary Capture Image Storage]
(Potentialy, the image was modified by user, and post-processed;
it's no longer a 'native' image)
+ Except if user told he wants to keep MediaStorageSOPClassUID,
+ when *he* knows he didn't modify the image (e.g. : he just anonymized the file)
--> 'Image Type' (0x0008,0x0008)
is forced to "DERIVED\PRIMARY"
(The written image is no longer an 'ORIGINAL' one)
-
+ Except if user told he wants to keep MediaStorageSOPClassUID,
+ when *he* knows he didn't modify the image (e.g. : he just anonymized the file)
+
--> 'Modality' (0x0008,0x0060)
is defaulted to "OT" (other) if missing.
(a fully user created image belongs to *no* modality)
Warning :
The user shouldn't add any image to a 'Manufacturer Serie'
but there is no way no to allowed him to do that
-
--> If 'SOP Class UID' exists in the native image ('true DICOM' image)
we create the 'Source Image Sequence' SeqEntry (0x0008, 0x2112)
--> Bits Stored, Bits Allocated, Hight Bit Position are checked for consistency
--> Pixel Spacing (0x0028,0x0030) is defaulted to "1.0\1.0"
--> Samples Per Pixel (0x0028,0x0002) is defaulted to 1 (grayscale)
---> Imager Pixel Spacing (0x0018,0x1164) : defaulted to 1.0\1.0
+--> Imager Pixel Spacing (0x0018,0x1164) : defaulted to Pixel Spacing value
--> Instance Creation Date, Instance Creation Time, Study Date, Study Time
are force to current Date and Time
false);
e_0002_0001->SetLength(2);
Archive->Push(e_0002_0001);
- e_0002_0001->Delete();
+ e_0002_0001->Delete();
- // FIXME : we should allow user to tell he *wants* to keep the original
- // 'Media Storage SOP Class UID'
+ if ( KeepMediaStorageSOPClassUID)
+ // It up to the use to *know* whether he modified the pixels or not.
+ // he is allowed to keep the original 'Media Storage SOP Class UID'
+ CheckMandatoryEntry(0x0002,0x0002,"1.2.840.10008.5.1.4.1.1.7");
+ else
// Potentialy this is a post-processed image
// 'Media Storage SOP Class UID' --> [Secondary Capture Image Storage]
- //
- CopyMandatoryEntry(0x0002,0x0002,"1.2.840.10008.5.1.4.1.1.7");
-
+ CopyMandatoryEntry(0x0002,0x0002,"1.2.840.10008.5.1.4.1.1.7");
+
// 'Media Storage SOP Instance UID'
CopyMandatoryEntry(0x0002,0x0003,sop);
// 'Implementation Class UID'
+ // FIXME : in all examples we have, 0x0002,0x0012 is not so long :
+ // semms to be Root UID + 4 digits (?)
CopyMandatoryEntry(0x0002,0x0012,Util::CreateUniqueUID());
// 'Implementation Version Name'
<< " for consistency purpose");
}
- // Imager Pixel Spacing : defaulted to 1.0\1.0
- // --> This one is the *legal* one !
- // FIXME : we should write it only when we are *sure* the image comes from
- // an imager (see also 0008,0x0064)
- CheckMandatoryEntry(0x0018,0x1164,"1.0\\1.0");
- // Pixel Spacing : defaulted to 1.0\1.0
- CheckMandatoryEntry(0x0028,0x0030,"1.0\\1.0");
+ std::string pixelSpacing = FileInternal->GetEntryString(0x0028,0x0030);
+ if ( pixelSpacing == GDCM_UNKNOWN )
+ pixelSpacing = "1.0\\1.0";
+ else
+ // if missing, Pixel Spacing forced to "1.0\1.0"
+ CopyMandatoryEntry(0x0028,0x0030,"1.0\\1.0");
+
+ // 'Imager Pixel Spacing' : defaulted to 'Pixel Spacing'
+ // --> This one is the *legal* one !
+ // FIXME : we should write it only when we are *sure* the image comes from
+ // an imager (see also 0008,0x0064)
+
+ CheckMandatoryEntry(0x0018,0x1164,pixelSpacing);
// Samples Per Pixel (type 1) : default to grayscale
CheckMandatoryEntry(0x0028,0x0002,"1");
- // --- Check UID-related Entries ---
+ // --- Check UID-related Entries ---
// If 'SOP Class UID' exists ('true DICOM' image)
// we create the 'Source Image Sequence' SeqEntry
sis->Delete();
// FIXME : is 'Image Type' *really* depending on the presence of'SOP Class UID'?
-
- // 'Image Type' (The written image is no longer an 'ORIGINAL' one)
+ if ( KeepMediaStorageSOPClassUID)
+ // It up to the use to *know* whether he modified the pixels or not.
+ // he is allowed to keep the original 'Media Storage SOP Class UID'
+ // and 'Image Type' as well
+ CheckMandatoryEntry(0x0008,0x0008,"DERIVED\\PRIMARY");
+ else
+ // Potentialy this is a post-processed image
+ // (The written image is no longer an 'ORIGINAL' one)
CopyMandatoryEntry(0x0008,0x0008,"DERIVED\\PRIMARY");
+
}
// At the end, not to overwrite the original ones,
// 'SOP Instance UID'
CopyMandatoryEntry(0x0008,0x0018,sop);
- // whether a 'SOP Class UID' already exists or not in the original image
- // the gdcm written image *is* a [Secondary Capture Image Storage] !
- // 'SOP Class UID' : [Secondary Capture Image Storage]
- CopyMandatoryEntry(0x0008,0x0016,"1.2.840.10008.5.1.4.1.1.7");
-
-// ---- The user will never have to take any action on the following ----.
+ // the gdcm written image is a [Secondary Capture Image Storage]
+ // except if user told us he dind't modify the pixels, and, therefore
+ // he want to keep the 'Media Storage SOP Class UID'
+
+ // 'Media Storage SOP Class UID' : [Secondary Capture Image Storage]
+ if ( KeepMediaStorageSOPClassUID)
+ {
+ // It up to the use to *know* whether he modified the pixels or not.
+ // he is allowed to keep the original 'Media Storage SOP Class UID'
+ CheckMandatoryEntry(0x0008,0x0016,"1.2.840.10008.5.1.4.1.1.7");
+ }
+ else
+ {
+ // Potentialy this is a post-processed image
+ // 'Media Storage SOP Class UID' --> [Secondary Capture Image Storage]
+ CopyMandatoryEntry(0x0008,0x0016,"1.2.840.10008.5.1.4.1.1.7");
+
+ // FIXME : Must we Force Value, or Default value ?
+ // Is it Type 1 for any Modality ?
+ // --> Answer seems to be NO :-(
+ // FIXME : we should write it only when we are *sure* the image
+ // *does not* come from an imager (see also 0018,0x1164)
+
+ // Conversion Type.
+ // Other possible values are :
+ // See PS 3.3, Page 408
+
+ // DV = Digitized Video
+ // DI = Digital Interface
+ // DF = Digitized Film
+ // WSD = Workstation
+ // SD = Scanned Document
+ // SI = Scanned Image
+ // DRW = Drawing
+ // SYN = Synthetic Image
+
+ CheckMandatoryEntry(0x0008,0x0064,"SYN");
+ }
+
+ // ---- The user will never have to take any action on the following ----
+
// new value for 'SOP Instance UID'
//SetMandatoryEntry(0x0008,0x0018,Util::CreateUniqueUID());
//CopyMandatoryEntry(0x0008,0x0050,"");
CheckMandatoryEntry(0x0008,0x0050,"");
- // Conversion Type.
- // Other possible values are :
- // See PS 3.3, Page 408
-
- // DV = Digitized Video
- // DI = Digital Interface
- // DF = Digitized Film
- // WSD = Workstation
- // SD = Scanned Document
- // SI = Scanned Image
- // DRW = Drawing
- // SYN = Synthetic Image
-
- // FIXME : Must we Force Value, or Default value ?
- // Is it Type 1 for any Modality ?
- // --> Answer seems to be NO :-(
- // FIXME : we should write it only when we are *sure* the image
- // *does not* come from an imager (see also 0018,0x1164)
- CopyMandatoryEntry(0x0008,0x0064,"SYN");
-
-// ----- Add Mandatory Entries if missing ---
- // Entries whose type is 1 are mandatory, with a mandatory value
- // Entries whose type is 1c are mandatory-inside-a-Sequence,
- // with a mandatory value
- // Entries whose type is 2 are mandatory, with an optional value
- // Entries whose type is 2c are mandatory-inside-a-Sequence,
- // with an optional value
- // Entries whose type is 3 are optional
+
+ // ----- Add Mandatory Entries if missing ---
+ // Entries whose type is 1 are mandatory, with a mandatory value
+ // Entries whose type is 1c are mandatory-inside-a-Sequence,
+ // with a mandatory value
+ // Entries whose type is 2 are mandatory, with an optional value
+ // Entries whose type is 2c are mandatory-inside-a-Sequence,
+ // with an optional value
+ // Entries whose type is 3 are optional
// 'Study Instance UID'
// Keep the value if exists
{
Archive->Push(0x0020, 0x0052);
}
+
+ // Deal with element 0x0000 (group length) of each group.
+ // First stage : get all the different Groups
+ GroupHT grHT;
+ DocEntry *d=input->GetFirstEntry();
+ while(d)
+ {
+ grHT[d->GetGroup()] = 0;
+ d=input->GetNextEntry();
+ }
+ // Second stage : add the missing ones (if any)
+ for (GroupHT::iterator it = grHT.begin(); it != grHT.end(); ++it)
+ {
+ CheckMandatoryEntry(it->first, 0x0000, "0");
+ }
+ // Third stage : update all 'zero level' groups length
+
}
void FileHelper::CheckMandatoryEntry(uint16_t group,uint16_t elem,std::string value)
Archive->Restore(0x0002,0x0100);
Archive->Restore(0x0002,0x0102);
+ // FIXME : Check if none is missing !
+
Archive->Restore(0x0008,0x0012);
Archive->Restore(0x0008,0x0013);
Archive->Restore(0x0008,0x0016);
void FileHelper::Initialize()
{
UserFunction = 0;
-
+ KeepMediaStorageSOPClassUID = false;
+
WriteMode = WMODE_RAW;
WriteType = ExplicitVR;
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