1 // gdcmHeaderHelper.cxx
2 //-----------------------------------------------------------------------------
3 #include "gdcmHeaderHelper.h"
4 #include "gdcmDirList.h"
11 //-----------------------------------------------------------------------------
13 * \ingroup gdcmHeaderHelper
16 gdcmHeaderHelper::gdcmHeaderHelper() : gdcmHeader( ) {
21 * \ingroup gdcmHeaderHelper
23 * @param InFilename Name of the file to deal with
24 * @param exception_on_error
25 * @param enable_sequences = true to allow the header
26 * to be parsed *inside* the SeQuences,
27 * when they have an actual length
28 * @param ignore_shadow = true if user wants to skip shadow groups
29 * during parsing, to save memory space
31 gdcmHeaderHelper::gdcmHeaderHelper(const char *InFilename,
32 bool exception_on_error,
33 bool enable_sequences,
35 : gdcmHeader( InFilename,
42 //-----------------------------------------------------------------------------
45 //-----------------------------------------------------------------------------
48 * \ingroup gdcmHeaderHelper
49 * \brief Returns the size (in bytes) of a single pixel of data.
50 * @return The size in bytes of a single pixel of data.
53 int gdcmHeaderHelper::GetPixelSize() {
55 // 0028 0100 US IMG Bits Allocated
56 // (in order no to be messed up by old RGB images)
57 if (gdcmHeader::GetEntryByNumber(0x0028,0x0100) == "24")
60 std::string PixelType = GetPixelType();
61 if (PixelType == "8U" || PixelType == "8S")
63 if (PixelType == "16U" || PixelType == "16S")
65 if (PixelType == "32U" || PixelType == "32S")
67 if (PixelType == "FD") // to help unfortunate users to manage DOUBLE
69 dbg.Verbose(0, "gdcmHeader::GetPixelSize: Unknown pixel type");
74 * \ingroup gdcmHeaderHelper
75 * \brief Build the Pixel Type of the image.
76 * Possible values are:
77 * - 8U unsigned 8 bit,
79 * - 16U unsigned 16 bit,
80 * - 16S signed 16 bit,
81 * - 32U unsigned 32 bit,
82 * - 32S signed 32 bit,
84 * \warning 12 bit images appear as 16 bit.
85 * 24 bit images appear as 8 bit
86 * 64 bit means 'DOUBLE' images
87 * (no DOUBLE images in kosher DICOM,
88 * but so usefull for people that miss them ;-)
91 std::string gdcmHeaderHelper::GetPixelType() {
92 std::string BitsAlloc;
93 BitsAlloc = GetEntryByNumber(0x0028, 0x0100);
94 if (BitsAlloc == GDCM_UNFOUND) { // Bits Allocated
95 dbg.Verbose(0, "gdcmHeader::GetPixelType: unfound Bits Allocated");
96 BitsAlloc = std::string("16");
98 if (BitsAlloc == "12") // It will be unpacked
99 BitsAlloc = std::string("16");
100 else if (BitsAlloc == "24") // (in order no to be messed up
101 BitsAlloc = std::string("8"); // by old RGB images)
104 Signed = GetEntryByNumber(0x0028, 0x0103);
105 if (Signed == GDCM_UNFOUND) { // "Pixel Representation"
106 dbg.Verbose(0, "gdcmHeader::GetPixelType: unfound Pixel Representation");
107 BitsAlloc = std::string("0");
109 if (BitsAlloc == "64") // to help users that want to deal with DOUBLE
113 Signed = std::string("U");
115 Signed = std::string("S");
117 return( BitsAlloc + Signed);
121 * \ingroup gdcmHeaderHelper
122 * \brief gets the info from 0028,0030 : Pixel Spacing
124 * @return X dimension of a pixel
126 float gdcmHeaderHelper::GetXSpacing() {
127 float xspacing, yspacing;
128 std::string StrSpacing = GetEntryByNumber(0x0028,0x0030);
130 if (StrSpacing == GDCM_UNFOUND) {
131 dbg.Verbose(0, "gdcmHeader::GetXSpacing: unfound Pixel Spacing (0028,0030)");
134 if( sscanf( StrSpacing.c_str(), "%f\\%f", &yspacing, &xspacing) != 2)
136 if (xspacing == 0.) {
137 dbg.Verbose(0, "gdcmHeader::GetYSpacing: gdcmData/CT-MONO2-8-abdo.dcm problem");
138 // seems to be a bug in the header ...
139 sscanf( StrSpacing.c_str(), "%f\\0\\%f", &yspacing, &xspacing);
145 * \ingroup gdcmHeaderHelper
146 * \brief gets the info from 0028,0030 : Pixel Spacing
148 * @return Y dimension of a pixel
150 float gdcmHeaderHelper::GetYSpacing() {
151 float xspacing, yspacing;
152 std::string StrSpacing = GetEntryByNumber(0x0028,0x0030);
154 if (StrSpacing == GDCM_UNFOUND) {
155 dbg.Verbose(0, "gdcmHeader::GetYSpacing: unfound Pixel Spacing (0028,0030)");
158 if( sscanf( StrSpacing.c_str(), "%f\\%f", &yspacing, &xspacing) != 2)
160 if (xspacing == 0.) {
161 dbg.Verbose(0, "gdcmHeader::GetYSpacing: gdcmData/CT-MONO2-8-abdo.dcm problem");
162 // seems to be a bug in the header ...
163 sscanf( StrSpacing.c_str(), "%f\\0\\%f", &yspacing, &xspacing);
169 *\ingroup gdcmHeaderHelper
170 *\brief gets the info from 0018,0088 : Space Between Slices
171 * else from 0018,0050 : Slice Thickness
173 * @return Z dimension of a voxel-to be
175 float gdcmHeaderHelper::GetZSpacing() {
176 // Spacing Between Slices : distance entre le milieu de chaque coupe
177 // Les coupes peuvent etre :
178 // jointives (Spacing between Slices = Slice Thickness)
179 // chevauchantes (Spacing between Slices < Slice Thickness)
180 // disjointes (Spacing between Slices > Slice Thickness)
181 // Slice Thickness : epaisseur de tissus sur laquelle est acquis le signal
182 // ca interesse le physicien de l'IRM, pas le visualisateur de volumes ...
183 // Si le Spacing Between Slices est absent,
184 // on suppose que les coupes sont jointives
186 std::string StrSpacingBSlices = GetEntryByNumber(0x0018,0x0088);
188 if (StrSpacingBSlices == GDCM_UNFOUND) {
189 dbg.Verbose(0, "gdcmHeader::GetZSpacing: unfound StrSpacingBSlices");
190 std::string StrSliceThickness = GetEntryByNumber(0x0018,0x0050);
191 if (StrSliceThickness == GDCM_UNFOUND)
194 // if no 'Spacing Between Slices' is found,
195 // we assume slices join together
196 // (no overlapping, no interslice gap)
197 // if they don't, we're fucked up
198 return atof(StrSliceThickness.c_str());
200 return atof(StrSpacingBSlices.c_str());
205 *\ingroup gdcmHeaderHelper
206 *\brief gets the info from 0028,1052 : Rescale Intercept
207 * @return Rescale Intercept
209 float gdcmHeaderHelper::GetRescaleIntercept() {
211 std::string StrRescInter = GetEntryByNumber(0x0028,0x1052); //0028 1052 DS IMG Rescale Intercept
212 if (StrRescInter != GDCM_UNFOUND) {
213 if( sscanf( StrRescInter.c_str(), "%f", &resInter) != 1) {
214 dbg.Verbose(0, "gdcmHeader::GetRescaleIntercept: Rescale Slope is empty");
215 // bug in the element 0x0028,0x1052
222 *\ingroup gdcmHeaderHelper
223 *\brief gets the info from 0028,1053 : Rescale Slope
224 * @return Rescale Slope
226 float gdcmHeaderHelper::GetRescaleSlope() {
228 std::string StrRescSlope = GetEntryByNumber(0x0028,0x1053); //0028 1053 DS IMG Rescale Slope
229 if (StrRescSlope != GDCM_UNFOUND) {
230 if( sscanf( StrRescSlope.c_str(), "%f", &resSlope) != 1) {
231 dbg.Verbose(0, "gdcmHeader::GetRescaleSlope: Rescale Slope is empty");
232 // bug in the element 0x0028,0x1053
239 * \ingroup gdcmHeaderHelper
240 * \brief This function is intended to user who doesn't want
241 * to have to manage a LUT and expects to get an RBG Pixel image
242 * (or a monochrome one ...)
243 * \warning to be used with GetImagePixels()
244 * @return 1 if Gray level, 3 if Color (RGB, YBR or PALETTE COLOR)
246 int gdcmHeaderHelper::GetNumberOfScalarComponents() {
247 if (GetSamplesPerPixel() ==3)
250 // 0028 0100 US IMG Bits Allocated
251 // (in order no to be messed up by old RGB images)
252 if (gdcmHeader::GetEntryByNumber(0x0028,0x0100) == "24")
255 std::string PhotometricInterpretation =
256 gdcmHeader::GetEntryByNumber(0x0028,0x0004);
258 if ( ( PhotometricInterpretation == "PALETTE COLOR ") ) {
259 if (HasLUT()) // PALETTE COLOR is NOT enough
265 //beware of trailing space at end of string
266 if (PhotometricInterpretation.find(GDCM_UNFOUND) <
267 PhotometricInterpretation.length() ||
268 PhotometricInterpretation.find("MONOCHROME1") <
269 PhotometricInterpretation.length() ||
270 PhotometricInterpretation.find("MONOCHROME2") <
271 PhotometricInterpretation.length() )
274 // we assume that *all* kinds of YBR are dealt with
279 * \ingroup gdcmHeaderHelper
280 * \brief This function is intended to user that DOESN'T want
281 * to get RGB pixels image when it's stored as a PALETTE COLOR image
282 * - the (vtk) user is supposed to know how deal with LUTs -
283 * \warning to be used with GetImagePixelsRaw()
284 * @return 1 if Gray level, 3 if Color (RGB or YBR - NOT 'PALETTE COLOR' -)
286 int gdcmHeaderHelper::GetNumberOfScalarComponentsRaw() {
288 // 0028 0100 US IMG Bits Allocated
289 // (in order no to be messed up by old RGB images)
290 if (gdcmHeader::GetEntryByNumber(0x0028,0x0100) == "24")
293 // we assume that *all* kinds of YBR are dealt with
294 return GetSamplesPerPixel();
298 *\ingroup gdcmHeaderHelper
299 *\brief gets the info from 0020,000d : Study Instance UID
300 *\todo ? : return the ACR-NEMA element value if DICOM one is not found
301 * @return Study Instance UID
303 std::string gdcmHeaderHelper::GetStudyUID(){
304 return GetEntryByNumber(0x0020,0x000d); //0020 000d UI REL Study Instance UID
308 *\ingroup gdcmHeaderHelper
309 *\brief gets the info from 0020,000e : Series Instance UID
310 *\todo ? : return the ACR-NEMA element value if DICOM one is not found
311 * @return Series Instance UID
313 std::string gdcmHeaderHelper::GetSeriesUID(){
314 return GetEntryByNumber(0x0020,0x000e); //0020 000e UI REL Series Instance UID
318 *\ingroup gdcmHeaderHelper
319 *\brief gets the info from 0008,0016 : SOP Class UID
320 *\todo ? : return the ACR-NEMA element value if DICOM one is not found
321 * @return SOP Class UID
323 std::string gdcmHeaderHelper::GetClassUID(){
324 return GetEntryByNumber(0x0008,0x0016); //0008 0016 UI ID SOP Class UID
328 *\ingroup gdcmHeaderHelper
329 *\brief gets the info from 0008,0018 : SOP Instance UID
330 *\todo ? : return the ACR-NEMA element value if DICOM one is not found
331 * @return SOP Instance UID
333 std::string gdcmHeaderHelper::GetInstanceUID(){
334 return GetEntryByNumber(0x0008,0x0018); //0008 0018 UI ID SOP Instance UID
337 // -------------- Remember ! ----------------------------------
339 // Image Position Patient (0020,0032):
340 // If not found (ACR_NEMA) we try Image Position (0020,0030)
341 // If not found (ACR-NEMA), we consider Slice Location (0020,1041)
342 // or Location (0020,0050)
343 // as the Z coordinate,
344 // 0. for all the coordinates if nothing is found
346 // TODO : find a way to inform the caller nothing was found
347 // TODO : How to tell the caller a wrong number of values was found?
349 // ---------------------------------------------------------------
353 * \ingroup gdcmHeaderHelper
354 * \brief gets the info from 0020,0032 : Image Position Patient
355 * else from 0020,0030 : Image Position (RET)
357 * @return up-left image corner X position
360 float gdcmHeaderHelper::GetXOrigin() {
361 float xImPos, yImPos, zImPos;
362 std::string StrImPos = GetEntryByNumber(0x0020,0x0032);
364 if (StrImPos == GDCM_UNFOUND) {
365 dbg.Verbose(0, "gdcmHeader::GetXImagePosition: unfound Image Position Patient (0020,0032)");
366 StrImPos = GetEntryByNumber(0x0020,0x0030); // For ACR-NEMA images
367 if (StrImPos == GDCM_UNFOUND) {
368 dbg.Verbose(0, "gdcmHeader::GetXImagePosition: unfound Image Position (RET) (0020,0030)");
369 // How to tell the caller nothing was found ?
373 if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
379 * \ingroup gdcmHeaderHelper
380 * \brief gets the info from 0020,0032 : Image Position Patient
381 * else from 0020,0030 : Image Position (RET)
383 * @return up-left image corner Y position
385 float gdcmHeaderHelper::GetYOrigin() {
386 float xImPos, yImPos, zImPos;
387 std::string StrImPos = GetEntryByNumber(0x0020,0x0032);
389 if (StrImPos == GDCM_UNFOUND) {
390 dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Image Position Patient (0020,0032)");
391 StrImPos = GetEntryByNumber(0x0020,0x0030); // For ACR-NEMA images
392 if (StrImPos == GDCM_UNFOUND) {
393 dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Image Position (RET) (0020,0030)");
394 // How to tell the caller nothing was found ?
398 if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
404 * \ingroup gdcmHeaderHelper
405 * \brief gets the info from 0020,0032 : Image Position Patient
406 * \ else from 0020,0030 : Image Position (RET)
407 * \ else from 0020,1041 : Slice Location
408 * \ else from 0020,0050 : Location
410 * @return up-left image corner Z position
412 float gdcmHeaderHelper::GetZOrigin() {
413 float xImPos, yImPos, zImPos;
414 std::string StrImPos = GetEntryByNumber(0x0020,0x0032);
415 if (StrImPos != GDCM_UNFOUND) {
416 if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3) {
417 dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Image Position Patient (0020,0032)");
418 return 0.; // bug in the element 0x0020,0x0032
423 StrImPos = GetEntryByNumber(0x0020,0x0030); // For ACR-NEMA images
424 if (StrImPos != GDCM_UNFOUND) {
425 if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3) {
426 dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Image Position (RET) (0020,0030)");
427 return 0.; // bug in the element 0x0020,0x0032
432 std::string StrSliceLocation = GetEntryByNumber(0x0020,0x1041);// for *very* old ACR-NEMA images
433 if (StrSliceLocation != GDCM_UNFOUND) {
434 if( sscanf( StrSliceLocation.c_str(), "%f", &zImPos) !=1) {
435 dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Slice Location (0020,1041)");
436 return 0.; // bug in the element 0x0020,0x1041
441 dbg.Verbose(0, "gdcmHeader::GetZImagePosition: unfound Slice Location (0020,1041)");
442 std::string StrLocation = GetEntryByNumber(0x0020,0x0050);
443 if (StrLocation != GDCM_UNFOUND) {
444 if( sscanf( StrLocation.c_str(), "%f", &zImPos) !=1) {
445 dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Location (0020,0050)");
446 return 0.; // bug in the element 0x0020,0x0050
451 dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Location (0020,0050)");
452 return 0.; // Hopeless
456 * \ingroup gdcmHeaderHelper
457 * \brief gets the info from 0020,0013 : Image Number
459 * @return image number
461 int gdcmHeaderHelper::GetImageNumber() {
462 //The function i atoi() takes the address of an area of memory as parameter and converts
463 //the string stored at that location to an integer using the external decimal to internal
464 //binary conversion rules. This may be preferable to sscanf() since atoi() is a much smaller,
465 // simpler and faster function. sscanf() can do all possible conversions whereas atoi() can
466 //only do single decimal integer conversions.
467 std::string StrImNumber = GetEntryByNumber(0x0020,0x0013); //0020 0013 IS REL Image Number
468 if (StrImNumber != GDCM_UNFOUND) {
469 return atoi( StrImNumber.c_str() );
475 * \ingroup gdcmHeaderHelper
476 * \brief gets the info from 0008,0060 : Modality
477 * @return Modality Type
479 ModalityType gdcmHeaderHelper::GetModality(void) {
480 std::string StrModality = GetEntryByNumber(0x0008,0x0060); //0008 0060 CS ID Modality
481 if (StrModality != GDCM_UNFOUND) {
482 if ( StrModality.find("AU") < StrModality.length()) return AU;
483 else if ( StrModality.find("AS") < StrModality.length()) return AS;
484 else if ( StrModality.find("BI") < StrModality.length()) return BI;
485 else if ( StrModality.find("CF") < StrModality.length()) return CF;
486 else if ( StrModality.find("CP") < StrModality.length()) return CP;
487 else if ( StrModality.find("CR") < StrModality.length()) return CR;
488 else if ( StrModality.find("CT") < StrModality.length()) return CT;
489 else if ( StrModality.find("CS") < StrModality.length()) return CS;
490 else if ( StrModality.find("DD") < StrModality.length()) return DD;
491 else if ( StrModality.find("DF") < StrModality.length()) return DF;
492 else if ( StrModality.find("DG") < StrModality.length()) return DG;
493 else if ( StrModality.find("DM") < StrModality.length()) return DM;
494 else if ( StrModality.find("DS") < StrModality.length()) return DS;
495 else if ( StrModality.find("DX") < StrModality.length()) return DX;
496 else if ( StrModality.find("ECG") < StrModality.length()) return ECG;
497 else if ( StrModality.find("EPS") < StrModality.length()) return EPS;
498 else if ( StrModality.find("FA") < StrModality.length()) return FA;
499 else if ( StrModality.find("FS") < StrModality.length()) return FS;
500 else if ( StrModality.find("HC") < StrModality.length()) return HC;
501 else if ( StrModality.find("HD") < StrModality.length()) return HD;
502 else if ( StrModality.find("LP") < StrModality.length()) return LP;
503 else if ( StrModality.find("LS") < StrModality.length()) return LS;
504 else if ( StrModality.find("MA") < StrModality.length()) return MA;
505 else if ( StrModality.find("MR") < StrModality.length()) return MR;
506 else if ( StrModality.find("NM") < StrModality.length()) return NM;
507 else if ( StrModality.find("OT") < StrModality.length()) return OT;
508 else if ( StrModality.find("PT") < StrModality.length()) return PT;
509 else if ( StrModality.find("RF") < StrModality.length()) return RF;
510 else if ( StrModality.find("RG") < StrModality.length()) return RG;
511 else if ( StrModality.find("RTDOSE") < StrModality.length()) return RTDOSE;
512 else if ( StrModality.find("RTIMAGE") < StrModality.length()) return RTIMAGE;
513 else if ( StrModality.find("RTPLAN") < StrModality.length()) return RTPLAN;
514 else if ( StrModality.find("RTSTRUCT")< StrModality.length()) return RTSTRUCT;
515 else if ( StrModality.find("SM") < StrModality.length()) return SM;
516 else if ( StrModality.find("ST") < StrModality.length()) return ST;
517 else if ( StrModality.find("TG") < StrModality.length()) return TG;
518 else if ( StrModality.find("US") < StrModality.length()) return US;
519 else if ( StrModality.find("VF") < StrModality.length()) return VF;
520 else if ( StrModality.find("XA") < StrModality.length()) return XA;
521 else if ( StrModality.find("XC") < StrModality.length()) return XC;
525 //throw error return value ???
526 // specified <> unknow in our database
534 * \ingroup gdcmHeaderHelper
535 * \brief gets the info from 0020,0037 : Image Orientation Patient
536 * @param iop adress of the (6)float aray to receive values
537 * @return cosines of image orientation patient
539 void gdcmHeaderHelper::GetImageOrientationPatient( float* iop ) {
541 //iop is supposed to be float[6]
542 iop[0] = iop[1] = iop[2] = iop[3] = iop[4] = iop[5] = 0;
544 std::string StrImOriPat = GetEntryByNumber(0x0020,0x0037); // 0020 0037 DS REL Image Orientation (Patient)
545 if (StrImOriPat != GDCM_UNFOUND) {
546 if( sscanf( StrImOriPat.c_str(), "%f\\%f\\%f\\%f\\%f\\%f",
547 &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6) {
548 dbg.Verbose(0, "gdcmHeader::GetImageOrientationPatient: wrong Image Orientation Patient (0020,0037)");
549 return ; // bug in the element 0x0020,0x0037
556 StrImOriPat = GetEntryByNumber(0x0020,0x0035); //0020 0035 DS REL Image Orientation (RET)
557 if (StrImOriPat != GDCM_UNFOUND) {
558 if( sscanf( StrImOriPat.c_str(), "%f\\%f\\%f\\%f\\%f\\%f",
559 &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6) {
560 dbg.Verbose(0, "gdcmHeader::GetImageOrientationPatient: wrong Image Orientation Patient (0020,0035)");
561 return ; // bug in the element 0x0020,0x0035
568 //-----------------------------------------------------------------------------
571 //-----------------------------------------------------------------------------
574 //-----------------------------------------------------------------------------
578 //-----------------------------------------------------------------------------
579 // gdcmSerieHeaderHelper
580 //-----------------------------------------------------------------------------
581 // Constructor / Destructor
582 gdcmSerieHeaderHelper::~gdcmSerieHeaderHelper(){
584 for (std::list<gdcmHeaderHelper*>::iterator it = CoherentGdcmFileList.begin();
585 it != CoherentGdcmFileList.end(); it++)
589 CoherentGdcmFileList.clear();
592 //-----------------------------------------------------------------------------
595 //-----------------------------------------------------------------------------
598 * \ingroup gdcmHeaderHelper
599 * \brief add a gdcmFile to the list based on file name
600 * @param filename Name of the file to deal with
602 void gdcmSerieHeaderHelper::AddFileName(std::string filename) {
603 gdcmHeaderHelper *GdcmFile = new gdcmHeaderHelper( filename.c_str() );
604 this->CoherentGdcmFileList.push_back( GdcmFile );
608 * \ingroup gdcmHeaderHelper
609 * \brief add a gdcmFile to the list
610 * @param file gdcmHeaderHelper to add
612 void gdcmSerieHeaderHelper::AddGdcmFile(gdcmHeaderHelper *file){
613 this->CoherentGdcmFileList.push_back( file );
617 * \ingroup gdcmHeaderHelper
618 * \brief Sets the Directory
619 * @param dir Name of the directory to deal with
621 void gdcmSerieHeaderHelper::SetDirectory(std::string dir){
622 gdcmDirList filenames_list(dir); //OS specific
624 for(gdcmDirList::iterator it = filenames_list.begin();
625 it !=filenames_list.end(); it++)
627 gdcmHeaderHelper *file = new gdcmHeaderHelper( it->c_str() );
628 this->CoherentGdcmFileList.push_back( file );
633 * \ingroup gdcmHeaderHelper
634 * \brief Sorts the File List
635 * \warning This could be implemented in a 'Strategy Pattern' approach
636 * But as I don't know how to do it, I leave it this way
637 * BTW, this is also a Strategy, I don't know this is the best approach :)
639 void gdcmSerieHeaderHelper::OrderGdcmFileList(){
640 if( ImagePositionPatientOrdering() ) {
643 else if( ImageNumberOrdering() ) {
651 * \ingroup gdcmHeaderHelper
652 * \brief Gets the *coherent* File List
653 * @return the *coherent* File List
655 std::list<gdcmHeaderHelper*> &gdcmSerieHeaderHelper::GetGdcmFileList() {
656 return CoherentGdcmFileList;
659 //-----------------------------------------------------------------------------
662 //-----------------------------------------------------------------------------
665 * \ingroup gdcmHeaderHelper
666 * \brief sorts the images, according to their Patient Position
667 * We may order, considering :
669 * -# Image Position Patient
671 * @return false only if the header is bugged !
673 bool gdcmSerieHeaderHelper::ImagePositionPatientOrdering()
674 //based on Jolinda's algorithm
676 //iop is calculated based on the file file
677 float *cosines = new float[6];
684 std::vector<float> distlist;
686 //!\todo rewrite this for loop.
687 for (std::list<gdcmHeaderHelper*>::iterator it = CoherentGdcmFileList.begin();
688 it != CoherentGdcmFileList.end(); it++)
691 (*it)->GetImageOrientationPatient(cosines);
693 //You only have to do this once for all slices in the volume. Next, for
694 //each slice, calculate the distance along the slice normal using the IPP
695 //tag ("dist" is initialized to zero before reading the first slice) :
696 normal[0] = cosines[1]*cosines[5] - cosines[2]*cosines[4];
697 normal[1] = cosines[2]*cosines[3] - cosines[0]*cosines[5];
698 normal[2] = cosines[0]*cosines[4] - cosines[1]*cosines[3];
700 ipp[0] = (*it)->GetXOrigin();
701 ipp[1] = (*it)->GetYOrigin();
702 ipp[2] = (*it)->GetZOrigin();
705 for (int i = 0; i < 3; ++i)
706 dist += normal[i]*ipp[i];
714 distlist.push_back( dist );
720 ipp[0] = (*it)->GetXOrigin();
721 ipp[1] = (*it)->GetYOrigin();
722 ipp[2] = (*it)->GetZOrigin();
725 for (int i = 0; i < 3; ++i)
726 dist += normal[i]*ipp[i];
734 distlist.push_back( dist );
736 min = (min < dist) ? min : dist;
737 max = (max > dist) ? max : dist;
742 //Then I order the slices according to the value "dist". Finally, once
743 //I've read in all the slices, I calculate the z-spacing as the difference
744 //between the "dist" values for the first two slices.
745 std::vector<gdcmHeaderHelper*> CoherentGdcmFileVector(n);
746 //CoherentGdcmFileVector.reserve( n );
747 CoherentGdcmFileVector.resize( n );
748 //assert( CoherentGdcmFileVector.capacity() >= n );
750 float step = (max - min)/(n - 1);
754 //VC++ don't understand what scope is !! it -> it2
755 for (std::list<gdcmHeaderHelper*>::iterator it2 = CoherentGdcmFileList.begin();
756 it2 != CoherentGdcmFileList.end(); it2++, n++)
759 //Assumption: all files are present (no one missing)
760 pos = (int)( fabs( (distlist[n]-min)/step) + .5 );
762 CoherentGdcmFileVector[pos] = *it2;
765 CoherentGdcmFileList.clear(); //this doesn't delete list's element, node only
767 //VC++ don't understand what scope is !! it -> it3
768 for (std::vector<gdcmHeaderHelper*>::iterator it3 = CoherentGdcmFileVector.begin();
769 it3 != CoherentGdcmFileVector.end(); it3++)
771 CoherentGdcmFileList.push_back( *it3 );
775 CoherentGdcmFileVector.clear();
782 * \ingroup gdcmHeaderHelper
783 * \brief sorts the images, according to their Image Number
784 * @return false only if the header is bugged !
787 bool gdcmSerieHeaderHelper::ImageNumberOrdering() {
789 int n = 0;//CoherentGdcmFileList.size() is a O(N) operation !!
790 unsigned char *partition;
792 std::list<gdcmHeaderHelper*>::iterator it = CoherentGdcmFileList.begin();
793 min = max = (*it)->GetImageNumber();
795 for (; it != CoherentGdcmFileList.end(); it++, n++)
797 pos = (*it)->GetImageNumber();
800 min = (min < pos) ? min : pos;
803 //bzeros(partition, n); //Cette fonction est déconseillée, utilisez plutôt memset.
804 partition = new unsigned char[n];
805 memset(partition, 0, n);
807 std::vector<gdcmHeaderHelper*> CoherentGdcmFileVector(n);
809 //VC++ don't understand what scope is !! it -> it2
810 for (std::list<gdcmHeaderHelper*>::iterator it2 = CoherentGdcmFileList.begin();
811 it2 != CoherentGdcmFileList.end(); it2++)
813 pos = (*it2)->GetImageNumber();
814 CoherentGdcmFileVector[pos - min] = *it2;
815 partition[pos - min]++;
818 unsigned char mult = 1;
819 for(int i=0; i<n ; i++)
821 mult *= partition[i];
824 //VC++ don't understand what scope is !! it -> it3
825 CoherentGdcmFileList.clear(); //this doesn't delete list's element, node only
826 for (std::vector<gdcmHeaderHelper*>::iterator it3 = CoherentGdcmFileVector.begin();
827 it3 != CoherentGdcmFileVector.end(); it3++)
829 CoherentGdcmFileList.push_back( *it3 );
831 CoherentGdcmFileVector.clear();
839 * \ingroup gdcmHeaderHelper
840 * \brief sorts the images, according to their File Name
841 * @return false only if the header is bugged !
843 bool gdcmSerieHeaderHelper::FileNameOrdering() {
845 //sort(CoherentGdcmFileList.begin(), CoherentGdcmFileList.end());
849 //-----------------------------------------------------------------------------