1 /*=========================================================================
4 Module: $RCSfile: gdcmFile.cxx,v $
6 Date: $Date: 2005/04/14 14:26:19 $
7 Version: $Revision: 1.232 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
20 // -------------- Remember ! ----------------------------------
22 // Image Position Patient (0020,0032):
23 // If not found (ACR_NEMA) we try Image Position (0020,0030)
24 // If not found (ACR-NEMA), we consider Slice Location (0020,1041)
25 // or Location (0020,0050)
26 // as the Z coordinate,
27 // 0. for all the coordinates if nothing is found
29 // ---------------------------------------------------------------
32 #include "gdcmGlobal.h"
34 #include "gdcmDebug.h"
36 #include "gdcmValEntry.h"
37 #include "gdcmBinEntry.h"
38 #include "gdcmSeqEntry.h"
39 #include "gdcmRLEFramesInfo.h"
40 #include "gdcmJPEGFragmentsInfo.h"
42 #include <stdio.h> //sscanf
47 //-----------------------------------------------------------------------------
48 // Constructor / Destructor
51 * \brief Constructor used when we want to generate dicom files from scratch
56 RLEInfo = new RLEFramesInfo;
57 JPEGInfo = new JPEGFragmentsInfo;
64 * @param filename name of the file whose header we want to analyze
66 File::File( std::string const &filename )
69 RLEInfo = new RLEFramesInfo;
70 JPEGInfo = new JPEGFragmentsInfo;
72 // for some ACR-NEMA images GrPixel, NumPixel is *not* 7fe0,0010
73 // We may encounter the 'RETired' (0x0028, 0x0200) tag
74 // (Image Location") . This entry contains the number of
75 // the group that contains the pixel data (hence the "Pixel Data"
76 // is found by indirection through the "Image Location").
77 // Inside the group pointed by "Image Location" the searched element
78 // is conventionally the element 0x0010 (when the norm is respected).
79 // When the "Image Location" is missing we default to group 0x7fe0.
80 // Note: this IS the right place for the code
83 const std::string &imgLocation = GetEntryValue(0x0028, 0x0200);
84 if ( imgLocation == GDCM_UNFOUND )
91 GrPixel = (uint16_t) atoi( imgLocation.c_str() );
94 // sometimes Image Location value doesn't follow
95 // the supposed processor endianness.
96 // see gdcmData/cr172241.dcm
97 if ( GrPixel == 0xe07f )
102 if ( GrPixel != 0x7fe0 )
104 // This is a kludge for old dirty Philips imager.
112 // Now, we know GrPixel and NumPixel.
113 // Let's create a VirtualDictEntry to allow a further VR modification
114 // and force VR to match with BitsAllocated.
115 DocEntry *entry = GetDocEntry(GrPixel, NumPixel);
118 // Compute the RLE or JPEG info
120 std::string ts = GetTransferSyntax();
121 Fp->seekg( entry->GetOffset(), std::ios::beg );
122 if ( Global::GetTS()->IsRLELossless(ts) )
124 else if ( Global::GetTS()->IsJPEG(ts) )
125 ComputeJPEGFragmentInfo();
128 // Create a new BinEntry to change the the DictEntry
129 // The changed DictEntry will have
130 // - a correct PixelVR OB or OW)
131 // - the name to "Pixel Data"
132 BinEntry *oldEntry = dynamic_cast<BinEntry *>(entry);
136 // 8 bits allocated is a 'O Bytes' , as well as 24 (old ACR-NEMA RGB)
137 // more than 8 (i.e 12, 16) is a 'O Words'
138 if ( GetBitsAllocated() == 8 || GetBitsAllocated() == 24 )
143 // Change only made if usefull
144 if( PixelVR != oldEntry->GetVR() )
146 DictEntry* newDict = NewVirtualDictEntry(GrPixel,NumPixel,
147 PixelVR,"1","Pixel Data");
149 BinEntry *newEntry = new BinEntry(newDict);
150 newEntry->Copy(entry);
151 newEntry->SetBinArea(oldEntry->GetBinArea(),oldEntry->IsSelfArea());
152 oldEntry->SetSelfArea(false);
154 RemoveEntry(oldEntry);
163 * \brief Canonical destructor.
173 //-----------------------------------------------------------------------------
178 * \brief This predicate, based on hopefully reasonable heuristics,
179 * decides whether or not the current File was properly parsed
180 * and contains the mandatory information for being considered as
181 * a well formed and usable Dicom/Acr File.
182 * @return true when File is the one of a reasonable Dicom/Acr file,
185 bool File::IsReadable()
187 if( !Document::IsReadable() )
192 const std::string &res = GetEntryValue(0x0028, 0x0005);
193 if ( res != GDCM_UNFOUND && atoi(res.c_str()) > 4 )
195 return false; // Image Dimensions
197 if ( !GetDocEntry(0x0028, 0x0100) )
199 return false; // "Bits Allocated"
201 if ( !GetDocEntry(0x0028, 0x0101) )
203 return false; // "Bits Stored"
205 if ( !GetDocEntry(0x0028, 0x0102) )
207 return false; // "High Bit"
209 if ( !GetDocEntry(0x0028, 0x0103) )
211 return false; // "Pixel Representation" i.e. 'Sign'
218 * \brief gets the info from 0020,0013 : Image Number else 0.
219 * @return image number
221 int File::GetImageNumber()
223 //0020 0013 : Image Number
224 std::string strImNumber = GetEntryValue(0x0020,0x0013);
225 if ( strImNumber != GDCM_UNFOUND )
227 return atoi( strImNumber.c_str() );
233 * \brief gets the info from 0008,0060 : Modality
234 * @return Modality Type
236 ModalityType File::GetModality()
238 // 0008 0060 : Modality
239 std::string strModality = GetEntryValue(0x0008,0x0060);
240 if ( strModality != GDCM_UNFOUND )
242 if ( strModality.find("AU") < strModality.length()) return AU;
243 else if ( strModality.find("AS") < strModality.length()) return AS;
244 else if ( strModality.find("BI") < strModality.length()) return BI;
245 else if ( strModality.find("CF") < strModality.length()) return CF;
246 else if ( strModality.find("CP") < strModality.length()) return CP;
247 else if ( strModality.find("CR") < strModality.length()) return CR;
248 else if ( strModality.find("CT") < strModality.length()) return CT;
249 else if ( strModality.find("CS") < strModality.length()) return CS;
250 else if ( strModality.find("DD") < strModality.length()) return DD;
251 else if ( strModality.find("DF") < strModality.length()) return DF;
252 else if ( strModality.find("DG") < strModality.length()) return DG;
253 else if ( strModality.find("DM") < strModality.length()) return DM;
254 else if ( strModality.find("DS") < strModality.length()) return DS;
255 else if ( strModality.find("DX") < strModality.length()) return DX;
256 else if ( strModality.find("ECG") < strModality.length()) return ECG;
257 else if ( strModality.find("EPS") < strModality.length()) return EPS;
258 else if ( strModality.find("FA") < strModality.length()) return FA;
259 else if ( strModality.find("FS") < strModality.length()) return FS;
260 else if ( strModality.find("HC") < strModality.length()) return HC;
261 else if ( strModality.find("HD") < strModality.length()) return HD;
262 else if ( strModality.find("LP") < strModality.length()) return LP;
263 else if ( strModality.find("LS") < strModality.length()) return LS;
264 else if ( strModality.find("MA") < strModality.length()) return MA;
265 else if ( strModality.find("MR") < strModality.length()) return MR;
266 else if ( strModality.find("NM") < strModality.length()) return NM;
267 else if ( strModality.find("OT") < strModality.length()) return OT;
268 else if ( strModality.find("PT") < strModality.length()) return PT;
269 else if ( strModality.find("RF") < strModality.length()) return RF;
270 else if ( strModality.find("RG") < strModality.length()) return RG;
271 else if ( strModality.find("RTDOSE")
272 < strModality.length()) return RTDOSE;
273 else if ( strModality.find("RTIMAGE")
274 < strModality.length()) return RTIMAGE;
275 else if ( strModality.find("RTPLAN")
276 < strModality.length()) return RTPLAN;
277 else if ( strModality.find("RTSTRUCT")
278 < strModality.length()) return RTSTRUCT;
279 else if ( strModality.find("SM") < strModality.length()) return SM;
280 else if ( strModality.find("ST") < strModality.length()) return ST;
281 else if ( strModality.find("TG") < strModality.length()) return TG;
282 else if ( strModality.find("US") < strModality.length()) return US;
283 else if ( strModality.find("VF") < strModality.length()) return VF;
284 else if ( strModality.find("XA") < strModality.length()) return XA;
285 else if ( strModality.find("XC") < strModality.length()) return XC;
289 /// \todo throw error return value ???
290 /// specified <> unknown in our database
299 * \brief Retrieve the number of columns of image.
300 * @return The encountered size when found, 0 by default.
301 * 0 means the file is NOT USABLE. The caller will have to check
305 const std::string &strSize = GetEntryValue(0x0028,0x0011);
306 if ( strSize == GDCM_UNFOUND )
311 return atoi( strSize.c_str() );
315 * \brief Retrieve the number of lines of image.
316 * \warning The defaulted value is 1 as opposed to File::GetXSize()
317 * @return The encountered size when found, 1 by default
318 * (The ACR-NEMA file contains a Signal, not an Image).
322 const std::string &strSize = GetEntryValue(0x0028,0x0010);
323 if ( strSize != GDCM_UNFOUND )
325 return atoi( strSize.c_str() );
332 // The Rows (0028,0010) entry was optional for ACR/NEMA. It might
333 // hence be a signal (1D image). So we default to 1:
338 * \brief Retrieve the number of planes of volume or the number
339 * of frames of a multiframe.
340 * \warning When present we consider the "Number of Frames" as the third
341 * dimension. When Missing we consider the third dimension as
342 * being the ACR-NEMA "Planes" tag content.
343 * @return The encountered size when found, 1 by default (single image).
347 // Both DicomV3 and ACR/Nema consider the "Number of Frames"
348 // as the third dimension.
349 const std::string &strSize = GetEntryValue(0x0028,0x0008);
350 if ( strSize != GDCM_UNFOUND )
352 return atoi( strSize.c_str() );
355 // We then consider the "Planes" entry as the third dimension
356 const std::string &strSize2 = GetEntryValue(0x0028,0x0012);
357 if ( strSize2 != GDCM_UNFOUND )
359 return atoi( strSize2.c_str() );
366 * \brief gets the info from 0028,0030 : Pixel Spacing
368 * @return X dimension of a pixel
370 float File::GetXSpacing()
372 float xspacing = 1.0;
373 float yspacing = 1.0;
374 const std::string &strSpacing = GetEntryValue(0x0028,0x0030);
376 if( strSpacing == GDCM_UNFOUND )
378 gdcmWarningMacro( "Unfound Pixel Spacing (0028,0030)" );
383 if( ( nbValues = sscanf( strSpacing.c_str(),
384 "%f\\%f", &yspacing, &xspacing)) != 2 )
386 // if no values, xspacing is set to 1.0
389 // if single value is found, xspacing is defaulted to yspacing
393 if ( xspacing == 0.0 )
400 // to avoid troubles with David Clunie's-like images
401 if ( xspacing == 0. && yspacing == 0.)
406 gdcmWarningMacro("gdcmData/CT-MONO2-8-abdo.dcm-like problem");
407 // seems to be a bug in the header ...
408 nbValues = sscanf( strSpacing.c_str(), "%f\\0\\%f", &yspacing, &xspacing);
409 gdcmAssertMacro( nbValues == 2 );
416 * \brief gets the info from 0028,0030 : Pixel Spacing
418 * @return Y dimension of a pixel
420 float File::GetYSpacing()
423 std::string strSpacing = GetEntryValue(0x0028,0x0030);
425 if ( strSpacing == GDCM_UNFOUND )
427 gdcmWarningMacro("Unfound Pixel Spacing (0028,0030)");
431 // if sscanf cannot read any float value, it won't affect yspacing
432 int nbValues = sscanf( strSpacing.c_str(), "%f", &yspacing);
434 // if no values, xspacing is set to 1.0
438 if ( yspacing == 0.0 )
445 * \brief gets the info from 0018,0088 : Space Between Slices
446 * else from 0018,0050 : Slice Thickness
448 * @return Z dimension of a voxel-to be
450 float File::GetZSpacing()
452 // Spacing Between Slices : distance between the middle of 2 slices
454 // jointives (Spacing between Slices = Slice Thickness)
455 // overlapping (Spacing between Slices < Slice Thickness)
456 // disjointes (Spacing between Slices > Slice Thickness)
457 // Slice Thickness : epaisseur de tissus sur laquelle est acquis le signal
458 // It only concerns the MRI guys, not people wanting to visualize volmues
459 // If Spacing Between Slices is Missing,
460 // we suppose slices joint together
462 const std::string &strSpacingBSlices = GetEntryValue(0x0018,0x0088);
464 if ( strSpacingBSlices == GDCM_UNFOUND )
466 gdcmWarningMacro("Unfound Spacing Between Slices (0018,0088)");
467 const std::string &strSliceThickness = GetEntryValue(0x0018,0x0050);
468 if ( strSliceThickness == GDCM_UNFOUND )
470 gdcmWarningMacro("Unfound Slice Thickness (0018,0050)");
475 // if no 'Spacing Between Slices' is found,
476 // we assume slices join together
477 // (no overlapping, no interslice gap)
478 // if they don't, we're fucked up
479 return (float)atof( strSliceThickness.c_str() );
483 return (float)atof( strSpacingBSlices.c_str() );
487 * \brief gets the info from 0020,0032 : Image Position Patient
488 * else from 0020,0030 : Image Position (RET)
490 * @return up-left image corner X position
492 float File::GetXOrigin()
494 float xImPos, yImPos, zImPos;
495 std::string strImPos = GetEntryValue(0x0020,0x0032);
497 if ( strImPos == GDCM_UNFOUND )
499 gdcmWarningMacro( "Unfound Image Position Patient (0020,0032)");
500 strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
501 if ( strImPos == GDCM_UNFOUND )
503 gdcmWarningMacro( "Unfound Image Position (RET) (0020,0030)");
508 if( sscanf( strImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3 )
517 * \brief gets the info from 0020,0032 : Image Position Patient
518 * else from 0020,0030 : Image Position (RET)
520 * @return up-left image corner Y position
522 float File::GetYOrigin()
524 float xImPos, yImPos, zImPos;
525 std::string strImPos = GetEntryValue(0x0020,0x0032);
527 if ( strImPos == GDCM_UNFOUND)
529 gdcmWarningMacro( "Unfound Image Position Patient (0020,0032)");
530 strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
531 if ( strImPos == GDCM_UNFOUND )
533 gdcmWarningMacro( "Unfound Image Position (RET) (0020,0030)");
538 if( sscanf( strImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3 )
547 * \brief gets the info from 0020,0032 : Image Position Patient
548 * else from 0020,0030 : Image Position (RET)
549 * else from 0020,1041 : Slice Location
550 * else from 0020,0050 : Location
552 * @return up-left image corner Z position
554 float File::GetZOrigin()
556 float xImPos, yImPos, zImPos;
557 std::string strImPos = GetEntryValue(0x0020,0x0032);
559 if ( strImPos != GDCM_UNFOUND )
561 if( sscanf( strImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
563 gdcmWarningMacro( "Wrong Image Position Patient (0020,0032)");
564 return 0.; // bug in the element 0x0020,0x0032
572 strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
573 if ( strImPos != GDCM_UNFOUND )
575 if( sscanf( strImPos.c_str(),
576 "%f\\%f\\%f", &xImPos, &yImPos, &zImPos ) != 3 )
578 gdcmWarningMacro( "Wrong Image Position (RET) (0020,0030)");
579 return 0.; // bug in the element 0x0020,0x0032
587 std::string strSliceLocation = GetEntryValue(0x0020,0x1041); // for *very* old ACR-NEMA images
588 if ( strSliceLocation != GDCM_UNFOUND )
590 if( sscanf( strSliceLocation.c_str(), "%f", &zImPos) != 1)
592 gdcmWarningMacro( "Wrong Slice Location (0020,1041)");
593 return 0.; // bug in the element 0x0020,0x1041
600 gdcmWarningMacro( "Unfound Slice Location (0020,1041)");
602 std::string strLocation = GetEntryValue(0x0020,0x0050);
603 if ( strLocation != GDCM_UNFOUND )
605 if( sscanf( strLocation.c_str(), "%f", &zImPos) != 1)
607 gdcmWarningMacro( "Wrong Location (0020,0050)");
608 return 0.; // bug in the element 0x0020,0x0050
615 gdcmWarningMacro( "Unfound Location (0020,0050)");
617 return 0.; // Hopeless
621 * \brief gets the info from 0020,0037 : Image Orientation Patient
622 * (needed to organize DICOM files based on their x,y,z position)
623 * @param iop adress of the (6)float aray to receive values
624 * @return cosines of image orientation patient
626 void File::GetImageOrientationPatient( float iop[6] )
628 std::string strImOriPat;
629 //iop is supposed to be float[6]
630 iop[0] = iop[1] = iop[2] = iop[3] = iop[4] = iop[5] = 0.;
632 // 0020 0037 DS REL Image Orientation (Patient)
633 if ( (strImOriPat = GetEntryValue(0x0020,0x0037)) != GDCM_UNFOUND )
635 if( sscanf( strImOriPat.c_str(), "%f\\%f\\%f\\%f\\%f\\%f",
636 &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6 )
638 gdcmWarningMacro( "Wrong Image Orientation Patient (0020,0037). Less than 6 values were found." );
642 // 0020 0035 DS REL Image Orientation (RET)
643 else if ( (strImOriPat = GetEntryValue(0x0020,0x0035)) != GDCM_UNFOUND )
645 if( sscanf( strImOriPat.c_str(), "%f\\%f\\%f\\%f\\%f\\%f",
646 &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6 )
648 gdcmWarningMacro( "wrong Image Orientation Patient (0020,0035). Less than 6 values were found." );
654 * \brief Retrieve the number of Bits Stored (actually used)
655 * (as opposed to number of Bits Allocated)
656 * @return The encountered number of Bits Stored, 0 by default.
657 * 0 means the file is NOT USABLE. The caller has to check it !
659 int File::GetBitsStored()
661 std::string strSize = GetEntryValue( 0x0028, 0x0101 );
662 if ( strSize == GDCM_UNFOUND )
664 gdcmWarningMacro("(0028,0101) is supposed to be mandatory");
665 return 0; // It's supposed to be mandatory
666 // the caller will have to check
668 return atoi( strSize.c_str() );
672 * \brief Retrieve the number of Bits Allocated
673 * (8, 12 -compacted ACR-NEMA files, 16, ...)
674 * @return The encountered number of Bits Allocated, 0 by default.
675 * 0 means the file is NOT USABLE. The caller has to check it !
677 int File::GetBitsAllocated()
679 std::string strSize = GetEntryValue(0x0028,0x0100);
680 if ( strSize == GDCM_UNFOUND )
682 gdcmWarningMacro( "(0028,0100) is supposed to be mandatory");
683 return 0; // It's supposed to be mandatory
684 // the caller will have to check
686 return atoi( strSize.c_str() );
690 * \brief Retrieve the high bit position.
691 * \warning The method defaults to 0 when information is Missing.
692 * The responsability of checking this value is left to the caller.
693 * @return The high bit positin when present. 0 when Missing.
695 int File::GetHighBitPosition()
697 std::string strSize = GetEntryValue( 0x0028, 0x0102 );
698 if ( strSize == GDCM_UNFOUND )
700 gdcmWarningMacro( "(0028,0102) is supposed to be mandatory");
703 return atoi( strSize.c_str() );
707 * \brief Retrieve the number of Samples Per Pixel
708 * (1 : gray level, 3 : RGB -1 or 3 Planes-)
709 * @return The encountered number of Samples Per Pixel, 1 by default.
710 * (Gray level Pixels)
712 int File::GetSamplesPerPixel()
714 const std::string &strSize = GetEntryValue(0x0028,0x0002);
715 if ( strSize == GDCM_UNFOUND )
717 gdcmWarningMacro( "(0028,0002) is supposed to be mandatory");
718 return 1; // Well, it's supposed to be mandatory ...
719 // but sometimes it's missing : *we* assume Gray pixels
721 return atoi( strSize.c_str() );
725 * \brief Retrieve the Planar Configuration for RGB images
726 * (0 : RGB Pixels , 1 : R Plane + G Plane + B Plane)
727 * @return The encountered Planar Configuration, 0 by default.
729 int File::GetPlanarConfiguration()
731 std::string strSize = GetEntryValue(0x0028,0x0006);
732 if ( strSize == GDCM_UNFOUND )
734 gdcmWarningMacro( "Not found : Planar Configuration (0028,0006)");
737 return atoi( strSize.c_str() );
741 * \brief Return the size (in bytes) of a single pixel of data.
742 * @return The size in bytes of a single pixel of data; 0 by default
743 * 0 means the file is NOT USABLE; the caller will have to check
745 int File::GetPixelSize()
747 // 0028 0100 US IMG Bits Allocated
748 // (in order no to be messed up by old RGB images)
749 // if (File::GetEntryValue(0x0028,0x0100) == "24")
752 std::string pixelType = GetPixelType();
753 if ( pixelType == "8U" || pixelType == "8S" )
757 if ( pixelType == "16U" || pixelType == "16S")
761 if ( pixelType == "32U" || pixelType == "32S")
765 if ( pixelType == "FD" )
769 gdcmWarningMacro( "Unknown pixel type");
774 * \brief Build the Pixel Type of the image.
775 * Possible values are:
776 * - 8U unsigned 8 bit,
778 * - 16U unsigned 16 bit,
779 * - 16S signed 16 bit,
780 * - 32U unsigned 32 bit,
781 * - 32S signed 32 bit,
782 * - FD floating double 64 bits (Not kosher DICOM, but so usefull!)
783 * \warning 12 bit images appear as 16 bit.
784 * 24 bit images appear as 8 bit + photochromatic interp ="RGB "
785 * @return 0S if nothing found. NOT USABLE file. The caller has to check
787 std::string File::GetPixelType()
789 std::string bitsAlloc = GetEntryValue(0x0028, 0x0100); // Bits Allocated
790 if ( bitsAlloc == GDCM_UNFOUND )
792 gdcmWarningMacro( "Missing Bits Allocated (0028,0100)");
793 bitsAlloc = "16"; // default and arbitrary value, not to polute the output
796 if ( bitsAlloc == "64" )
800 else if ( bitsAlloc == "12" )
802 // It will be unpacked
805 else if ( bitsAlloc == "24" )
807 // (in order no to be messed up
808 bitsAlloc = "8"; // by old RGB images)
811 std::string sign = GetEntryValue(0x0028, 0x0103);//"Pixel Representation"
813 if (sign == GDCM_UNFOUND )
815 gdcmWarningMacro( "Missing Pixel Representation (0028,0103)");
816 sign = "U"; // default and arbitrary value, not to polute the output
818 else if ( sign == "0" )
826 return bitsAlloc + sign;
830 * \brief Check whether the pixels are signed (1) or UNsigned (0) data.
831 * \warning The method defaults to false (UNsigned) when tag 0028|0103
833 * The responsability of checking this value is left to the caller.
834 * @return True when signed, false when UNsigned
836 bool File::IsSignedPixelData()
838 std::string strSign = GetEntryValue( 0x0028, 0x0103 );
839 if ( strSign == GDCM_UNFOUND )
841 gdcmWarningMacro( "(0028,0103) is supposed to be mandatory");
844 int sign = atoi( strSign.c_str() );
853 * \brief Check whether this a monochrome picture (gray levels) or not,
854 * using "Photometric Interpretation" tag (0x0028,0x0004).
855 * @return true when "MONOCHROME1" or "MONOCHROME2". False otherwise.
857 bool File::IsMonochrome()
859 const std::string &PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
860 if ( Util::DicomStringEqual(PhotometricInterp, "MONOCHROME1")
861 || Util::DicomStringEqual(PhotometricInterp, "MONOCHROME2") )
865 if ( PhotometricInterp == GDCM_UNFOUND )
867 gdcmWarningMacro( "Not found : Photometric Interpretation (0028,0004)");
873 * \brief Check whether this a MONOCHROME1 picture (high values = dark)
874 * or not using "Photometric Interpretation" tag (0x0028,0x0004).
875 * @return true when "MONOCHROME1" . False otherwise.
877 bool File::IsMonochrome1()
879 const std::string &PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
880 if ( Util::DicomStringEqual(PhotometricInterp, "MONOCHROME1") )
884 if ( PhotometricInterp == GDCM_UNFOUND )
886 gdcmWarningMacro( "Not found : Photometric Interpretation (0028,0004)");
892 * \brief Check whether this a "PALETTE COLOR" picture or not by accessing
893 * the "Photometric Interpretation" tag ( 0x0028, 0x0004 ).
894 * @return true when "PALETTE COLOR". False otherwise.
896 bool File::IsPaletteColor()
898 std::string PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
899 if ( PhotometricInterp == "PALETTE COLOR " )
903 if ( PhotometricInterp == GDCM_UNFOUND )
905 gdcmWarningMacro( "Not found : Palette color (0028,0004)");
911 * \brief Check whether this a "YBR_FULL" color picture or not by accessing
912 * the "Photometric Interpretation" tag ( 0x0028, 0x0004 ).
913 * @return true when "YBR_FULL". False otherwise.
915 bool File::IsYBRFull()
917 std::string PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
918 if ( PhotometricInterp == "YBR_FULL" )
922 if ( PhotometricInterp == GDCM_UNFOUND )
924 gdcmWarningMacro( "Not found : YBR Full (0028,0004)");
930 * \brief tells us if LUT are used
931 * \warning Right now, 'Segmented xxx Palette Color Lookup Table Data'
932 * are NOT considered as LUT, since nobody knows
933 * how to deal with them
934 * Please warn me if you know sbdy that *does* know ... jprx
935 * @return true if LUT Descriptors and LUT Tables were found
939 // Check the presence of the LUT Descriptors, and LUT Tables
941 if ( !GetDocEntry(0x0028,0x1101) )
945 // LutDescriptorGreen
946 if ( !GetDocEntry(0x0028,0x1102) )
951 if ( !GetDocEntry(0x0028,0x1103) )
955 // Red Palette Color Lookup Table Data
956 if ( !GetDocEntry(0x0028,0x1201) )
960 // Green Palette Color Lookup Table Data
961 if ( !GetDocEntry(0x0028,0x1202) )
965 // Blue Palette Color Lookup Table Data
966 if ( !GetDocEntry(0x0028,0x1203) )
971 // FIXME : (0x0028,0x3006) : LUT Data (CTX dependent)
972 // NOT taken into account, but we don't know how to use it ...
977 * \brief gets the info from 0028,1101 : Lookup Table Desc-Red
979 * @return Lookup Table number of Bits , 0 by default
980 * when (0028,0004),Photometric Interpretation = [PALETTE COLOR ]
981 * @ return bit number of each LUT item
983 int File::GetLUTNbits()
985 std::vector<std::string> tokens;
988 //Just hope Lookup Table Desc-Red = Lookup Table Desc-Red
989 // = Lookup Table Desc-Blue
990 // Consistency already checked in GetLUTLength
991 std::string lutDescription = GetEntryValue(0x0028,0x1101);
992 if ( lutDescription == GDCM_UNFOUND )
997 tokens.clear(); // clean any previous value
998 Util::Tokenize ( lutDescription, tokens, "\\" );
999 //LutLength=atoi(tokens[0].c_str());
1000 //LutDepth=atoi(tokens[1].c_str());
1002 lutNbits = atoi( tokens[2].c_str() );
1009 *\brief gets the info from 0028,1052 : Rescale Intercept
1010 * @return Rescale Intercept
1012 float File::GetRescaleIntercept()
1014 float resInter = 0.;
1015 /// 0028 1052 DS IMG Rescale Intercept
1016 const std::string &strRescInter = GetEntryValue(0x0028,0x1052);
1017 if ( strRescInter != GDCM_UNFOUND )
1019 if( sscanf( strRescInter.c_str(), "%f", &resInter) != 1 )
1021 // bug in the element 0x0028,0x1052
1022 gdcmWarningMacro( "Rescale Intercept (0028,1052) is empty." );
1030 *\brief gets the info from 0028,1053 : Rescale Slope
1031 * @return Rescale Slope
1033 float File::GetRescaleSlope()
1035 float resSlope = 1.;
1036 //0028 1053 DS IMG Rescale Slope
1037 std::string strRescSlope = GetEntryValue(0x0028,0x1053);
1038 if ( strRescSlope != GDCM_UNFOUND )
1040 if( sscanf( strRescSlope.c_str(), "%f", &resSlope) != 1)
1042 // bug in the element 0x0028,0x1053
1043 gdcmWarningMacro( "Rescale Slope (0028,1053) is empty.");
1051 * \brief This function is intended to user who doesn't want
1052 * to have to manage a LUT and expects to get an RBG Pixel image
1053 * (or a monochrome one ...)
1054 * \warning to be used with GetImagePixels()
1055 * @return 1 if Gray level, 3 if Color (RGB, YBR or PALETTE COLOR)
1057 int File::GetNumberOfScalarComponents()
1059 if ( GetSamplesPerPixel() == 3 )
1064 // 0028 0100 US IMG Bits Allocated
1065 // (in order no to be messed up by old RGB images)
1066 if ( GetEntryValue(0x0028,0x0100) == "24" )
1071 std::string strPhotometricInterpretation = GetEntryValue(0x0028,0x0004);
1073 if ( ( strPhotometricInterpretation == "PALETTE COLOR ") )
1075 if ( HasLUT() )// PALETTE COLOR is NOT enough
1085 // beware of trailing space at end of string
1086 // DICOM tags are never of odd length
1087 if ( strPhotometricInterpretation == GDCM_UNFOUND ||
1088 Util::DicomStringEqual(strPhotometricInterpretation, "MONOCHROME1") ||
1089 Util::DicomStringEqual(strPhotometricInterpretation, "MONOCHROME2") )
1095 // we assume that *all* kinds of YBR are dealt with
1101 * \brief This function is intended to user that DOESN'T want
1102 * to get RGB pixels image when it's stored as a PALETTE COLOR image
1103 * - the (vtk) user is supposed to know how deal with LUTs -
1104 * \warning to be used with GetImagePixelsRaw()
1105 * @return 1 if Gray level, 3 if Color (RGB or YBR - NOT 'PALETTE COLOR' -)
1107 int File::GetNumberOfScalarComponentsRaw()
1109 // 0028 0100 US IMG Bits Allocated
1110 // (in order no to be messed up by old RGB images)
1111 if ( File::GetEntryValue(0x0028,0x0100) == "24" )
1116 // we assume that *all* kinds of YBR are dealt with
1117 return GetSamplesPerPixel();
1121 * \brief Recover the offset (from the beginning of the file)
1122 * of *image* pixels (not *icone image* pixels, if any !)
1123 * @return Pixel Offset
1125 size_t File::GetPixelOffset()
1127 DocEntry *pxlElement = GetDocEntry(GrPixel, NumPixel);
1130 return pxlElement->GetOffset();
1134 gdcmDebugMacro( "Big trouble : Pixel Element ("
1135 << std::hex << GrPixel<<","<< NumPixel<< ") NOT found" );
1141 * \brief Recover the pixel area length (in Bytes)
1142 * @return Pixel Element Length, as stored in the header
1143 * (NOT the memory space necessary to hold the Pixels
1144 * -in case of embeded compressed image-)
1145 * 0 : NOT USABLE file. The caller has to check.
1147 size_t File::GetPixelAreaLength()
1149 DocEntry *pxlElement = GetDocEntry(GrPixel, NumPixel);
1152 return pxlElement->GetLength();
1156 gdcmDebugMacro( "Big trouble : Pixel Element ("
1157 << std::hex << GrPixel<<","<< NumPixel<< ") NOT found" );
1163 * \brief Adds the characteristics of a new element we want to anonymize
1166 void File::AddAnonymizeElement (uint16_t group, uint16_t elem,
1167 std::string const &value)
1174 AnonymizeList.push_back(el);
1178 * \brief Overwrites in the file the values of the DicomElements
1181 void File::AnonymizeNoLoad()
1183 std::fstream *fp = new std::fstream(Filename.c_str(),
1184 std::ios::in | std::ios::out | std::ios::binary);
1188 uint32_t valLgth = 0;
1189 std::string *spaces;
1190 for (ListElements::iterator it = AnonymizeList.begin();
1191 it != AnonymizeList.end();
1194 d = GetDocEntry( (*it).Group, (*it).Elem);
1199 if ( dynamic_cast<BinEntry *>(d)
1200 || dynamic_cast<SeqEntry *>(d) )
1203 offset = d->GetOffset();
1204 lgth = d->GetLength();
1207 spaces = new std::string( lgth-valLgth, ' ');
1208 (*it).Value = (*it).Value + *spaces;
1211 fp->seekp( offset, std::ios::beg );
1212 fp->write( (*it).Value.c_str(), lgth );
1220 * \brief anonymize a File (removes Patient's personal info passed with
1221 * AddAnonymizeElement()
1223 bool File::AnonymizeFile()
1225 // If Anonymisation list is empty, let's perform some basic anonymization
1226 if ( AnonymizeList.begin() == AnonymizeList.end() )
1228 // If exist, replace by spaces
1229 SetValEntry (" ",0x0010, 0x2154); // Telephone
1230 SetValEntry (" ",0x0010, 0x1040); // Adress
1231 SetValEntry (" ",0x0010, 0x0020); // Patient ID
1233 DocEntry* patientNameHE = GetDocEntry (0x0010, 0x0010);
1235 if ( patientNameHE ) // we replace it by Study Instance UID (why not ?)
1237 std::string studyInstanceUID = GetEntryValue (0x0020, 0x000d);
1238 if ( studyInstanceUID != GDCM_UNFOUND )
1240 SetValEntry(studyInstanceUID, 0x0010, 0x0010);
1244 SetValEntry("anonymised", 0x0010, 0x0010);
1251 for (ListElements::iterator it = AnonymizeList.begin();
1252 it != AnonymizeList.end();
1255 d = GetDocEntry( (*it).Group, (*it).Elem);
1260 if ( dynamic_cast<BinEntry *>(d)
1261 || dynamic_cast<SeqEntry *>(d) )
1264 SetValEntry ((*it).Value, (*it).Group, (*it).Elem);
1268 // In order to make definitively impossible any further identification
1269 // remove or replace all the stuff that contains a Date
1271 //0008 0012 DA ID Instance Creation Date
1272 //0008 0020 DA ID Study Date
1273 //0008 0021 DA ID Series Date
1274 //0008 0022 DA ID Acquisition Date
1275 //0008 0023 DA ID Content Date
1276 //0008 0024 DA ID Overlay Date
1277 //0008 0025 DA ID Curve Date
1278 //0008 002a DT ID Acquisition Datetime
1279 //0018 9074 DT ACQ Frame Acquisition Datetime
1280 //0018 9151 DT ACQ Frame Reference Datetime
1281 //0018 a002 DT ACQ Contribution Date Time
1282 //0020 3403 SH REL Modified Image Date (RET)
1283 //0032 0032 DA SDY Study Verified Date
1284 //0032 0034 DA SDY Study Read Date
1285 //0032 1000 DA SDY Scheduled Study Start Date
1286 //0032 1010 DA SDY Scheduled Study Stop Date
1287 //0032 1040 DA SDY Study Arrival Date
1288 //0032 1050 DA SDY Study Completion Date
1289 //0038 001a DA VIS Scheduled Admission Date
1290 //0038 001c DA VIS Scheduled Discharge Date
1291 //0038 0020 DA VIS Admitting Date
1292 //0038 0030 DA VIS Discharge Date
1293 //0040 0002 DA PRC Scheduled Procedure Step Start Date
1294 //0040 0004 DA PRC Scheduled Procedure Step End Date
1295 //0040 0244 DA PRC Performed Procedure Step Start Date
1296 //0040 0250 DA PRC Performed Procedure Step End Date
1297 //0040 2004 DA PRC Issue Date of Imaging Service Request
1298 //0040 4005 DT PRC Scheduled Procedure Step Start Date and Time
1299 //0040 4011 DT PRC Expected Completion Date and Time
1300 //0040 a030 DT PRC Verification Date Time
1301 //0040 a032 DT PRC Observation Date Time
1302 //0040 a120 DT PRC DateTime
1303 //0040 a121 DA PRC Date
1304 //0040 a13a DT PRC Referenced Datetime
1305 //0070 0082 DA ??? Presentation Creation Date
1306 //0100 0420 DT ??? SOP Autorization Date and Time
1307 //0400 0105 DT ??? Digital Signature DateTime
1308 //2100 0040 DA PJ Creation Date
1309 //3006 0008 DA SSET Structure Set Date
1310 //3008 0024 DA ??? Treatment Control Point Date
1311 //3008 0054 DA ??? First Treatment Date
1312 //3008 0056 DA ??? Most Recent Treatment Date
1313 //3008 0162 DA ??? Safe Position Exit Date
1314 //3008 0166 DA ??? Safe Position Return Date
1315 //3008 0250 DA ??? Treatment Date
1316 //300a 0006 DA RT RT Plan Date
1317 //300a 022c DA RT Air Kerma Rate Reference Date
1318 //300e 0004 DA RT Review Date
1324 * \brief Performs some consistency checking on various 'File related'
1325 * (as opposed to 'DicomDir related') entries
1326 * then writes in a file all the (Dicom Elements) included the Pixels
1327 * @param fileName file name to write to
1328 * @param writetype Type of the File to be written
1329 * (ACR, ExplicitVR, ImplicitVR)
1331 bool File::Write(std::string fileName, FileType writetype)
1333 std::ofstream *fp = new std::ofstream(fileName.c_str(),
1334 std::ios::out | std::ios::binary);
1337 gdcmWarningMacro("Failed to open (write) File: " << fileName.c_str());
1341 // Entry : 0002|0000 = group length -> recalculated
1342 ValEntry*e0000 = GetValEntry(0x0002,0x0000);
1345 std::ostringstream sLen;
1346 sLen << ComputeGroup0002Length(writetype);
1347 e0000->SetValue(sLen.str());
1351 if ( GetEntryValue(0x0028,0x0100) == "12")
1353 SetValEntry("16", 0x0028,0x0100);
1356 int i_lgPix = GetEntryLength(GrPixel, NumPixel);
1359 // no (GrPixel, NumPixel) element
1360 std::string s_lgPix = Util::Format("%d", i_lgPix+12);
1361 s_lgPix = Util::DicomString( s_lgPix.c_str() );
1362 InsertValEntry(s_lgPix,GrPixel, 0x0000);
1365 // FIXME : should be nice if we could move it to File
1366 // (or in future gdcmPixelData class)
1368 // Drop Palette Color, if necessary
1369 if ( GetEntryValue(0x0028,0x0002).c_str()[0] == '3' )
1371 // if SamplesPerPixel = 3, sure we don't need any LUT !
1372 // Drop 0028|1101, 0028|1102, 0028|1103
1373 // Drop 0028|1201, 0028|1202, 0028|1203
1375 DocEntry *e = GetDocEntry(0x0028,0x01101);
1378 RemoveEntryNoDestroy(e);
1380 e = GetDocEntry(0x0028,0x1102);
1383 RemoveEntryNoDestroy(e);
1385 e = GetDocEntry(0x0028,0x1103);
1388 RemoveEntryNoDestroy(e);
1390 e = GetDocEntry(0x0028,0x01201);
1393 RemoveEntryNoDestroy(e);
1395 e = GetDocEntry(0x0028,0x1202);
1398 RemoveEntryNoDestroy(e);
1400 e = GetDocEntry(0x0028,0x1203);
1403 RemoveEntryNoDestroy(e);
1407 Document::WriteContent(fp, writetype);
1415 //-----------------------------------------------------------------------------
1419 //-----------------------------------------------------------------------------
1422 * \brief Parse pixel data from disk of [multi-]fragment RLE encoding.
1423 * Compute the RLE extra information and store it in \ref RLEInfo
1424 * for later pixel retrieval usage.
1426 void File::ComputeRLEInfo()
1428 std::string ts = GetTransferSyntax();
1429 if ( !Global::GetTS()->IsRLELossless(ts) )
1434 // Encoded pixel data: for the time being we are only concerned with
1435 // Jpeg or RLE Pixel data encodings.
1436 // As stated in PS 3.5-2003, section 8.2 p44:
1437 // "If sent in Encapsulated Format (i.e. other than the Native Format) the
1438 // value representation OB is used".
1439 // Hence we expect an OB value representation. Concerning OB VR,
1440 // the section PS 3.5-2003, section A.4.c p 58-59, states:
1441 // "For the Value Representations OB and OW, the encoding shall meet the
1442 // following specifications depending on the Data element tag:"
1444 // - the first item in the sequence of items before the encoded pixel
1445 // data stream shall be basic offset table item. The basic offset table
1446 // item value, however, is not required to be present"
1447 ReadAndSkipEncapsulatedBasicOffsetTable();
1449 // Encapsulated RLE Compressed Images (see PS 3.5-2003, Annex G)
1450 // Loop on the individual frame[s] and store the information
1451 // on the RLE fragments in a RLEFramesInfo.
1452 // Note: - when only a single frame is present, this is a
1454 // - when more than one frame are present, then we are in
1455 // the case of a multi-frame image.
1457 while ( (frameLength = ReadTagLength(0xfffe, 0xe000)) )
1459 // Parse the RLE Header and store the corresponding RLE Segment
1460 // Offset Table information on fragments of this current Frame.
1461 // Note that the fragment pixels themselves are not loaded
1462 // (but just skipped).
1463 long frameOffset = Fp->tellg();
1465 uint32_t nbRleSegments = ReadInt32();
1466 if ( nbRleSegments > 16 )
1468 // There should be at most 15 segments (refer to RLEFrame class)
1469 gdcmWarningMacro( "Too many segments.");
1472 uint32_t rleSegmentOffsetTable[16];
1473 for( int k = 1; k <= 15; k++ )
1475 rleSegmentOffsetTable[k] = ReadInt32();
1478 // Deduce from both the RLE Header and the frameLength the
1479 // fragment length, and again store this info in a
1481 long rleSegmentLength[15];
1482 // skipping (not reading) RLE Segments
1483 if ( nbRleSegments > 1)
1485 for(unsigned int k = 1; k <= nbRleSegments-1; k++)
1487 rleSegmentLength[k] = rleSegmentOffsetTable[k+1]
1488 - rleSegmentOffsetTable[k];
1489 SkipBytes(rleSegmentLength[k]);
1493 rleSegmentLength[nbRleSegments] = frameLength
1494 - rleSegmentOffsetTable[nbRleSegments];
1495 SkipBytes(rleSegmentLength[nbRleSegments]);
1497 // Store the collected info
1498 RLEFrame *newFrame = new RLEFrame;
1499 newFrame->SetNumberOfFragments(nbRleSegments);
1500 for( unsigned int uk = 1; uk <= nbRleSegments; uk++ )
1502 newFrame->SetOffset(uk,frameOffset + rleSegmentOffsetTable[uk]);
1503 newFrame->SetLength(uk,rleSegmentLength[uk]);
1505 RLEInfo->AddFrame(newFrame);
1508 // Make sure that at the end of the item we encounter a 'Sequence
1510 if ( !ReadTag(0xfffe, 0xe0dd) )
1512 gdcmWarningMacro( "No sequence delimiter item at end of RLE item sequence");
1517 * \brief Parse pixel data from disk of [multi-]fragment Jpeg encoding.
1518 * Compute the jpeg extra information (fragment[s] offset[s] and
1519 * length) and store it[them] in \ref JPEGInfo for later pixel
1522 void File::ComputeJPEGFragmentInfo()
1524 // If you need to, look for comments of ComputeRLEInfo().
1525 std::string ts = GetTransferSyntax();
1526 if ( ! Global::GetTS()->IsJPEG(ts) )
1531 ReadAndSkipEncapsulatedBasicOffsetTable();
1533 // Loop on the fragments[s] and store the parsed information in a
1535 long fragmentLength;
1536 while ( (fragmentLength = ReadTagLength(0xfffe, 0xe000)) )
1538 long fragmentOffset = Fp->tellg();
1540 // Store the collected info
1541 JPEGFragment *newFragment = new JPEGFragment;
1542 newFragment->SetOffset(fragmentOffset);
1543 newFragment->SetLength(fragmentLength);
1544 JPEGInfo->AddFragment(newFragment);
1546 SkipBytes(fragmentLength);
1549 // Make sure that at the end of the item we encounter a 'Sequence
1551 if ( !ReadTag(0xfffe, 0xe0dd) )
1553 gdcmWarningMacro( "No sequence delimiter item at end of JPEG item sequence");
1558 * \brief Assuming the internal file pointer \ref Document::Fp
1559 * is placed at the beginning of a tag check whether this
1560 * tag is (TestGroup, TestElement).
1561 * \warning On success the internal file pointer \ref Document::Fp
1562 * is modified to point after the tag.
1563 * On failure (i.e. when the tag wasn't the expected tag
1564 * (TestGroup, TestElement) the internal file pointer
1565 * \ref Document::Fp is restored to it's original position.
1566 * @param testGroup The expected group of the tag.
1567 * @param testElement The expected Element of the tag.
1568 * @return True on success, false otherwise.
1570 bool File::ReadTag(uint16_t testGroup, uint16_t testElement)
1572 long positionOnEntry = Fp->tellg();
1573 long currentPosition = Fp->tellg(); // On debugging purposes
1575 // Read the Item Tag group and element, and make
1576 // sure they are what we expected:
1577 uint16_t itemTagGroup;
1578 uint16_t itemTagElement;
1581 itemTagGroup = ReadInt16();
1582 itemTagElement = ReadInt16();
1584 catch ( FormatError e )
1586 //std::cerr << e << std::endl;
1589 if ( itemTagGroup != testGroup || itemTagElement != testElement )
1591 gdcmWarningMacro( "Wrong Item Tag found:"
1592 << " We should have found tag ("
1593 << std::hex << testGroup << "," << testElement << ")" << std::endl
1594 << " but instead we encountered tag ("
1595 << std::hex << itemTagGroup << "," << itemTagElement << ")"
1596 << " at address: " << " 0x(" << (unsigned int)currentPosition << ")"
1598 Fp->seekg(positionOnEntry, std::ios::beg);
1606 * \brief Assuming the internal file pointer \ref Document::Fp
1607 * is placed at the beginning of a tag (TestGroup, TestElement),
1608 * read the length associated to the Tag.
1609 * \warning On success the internal file pointer \ref Document::Fp
1610 * is modified to point after the tag and it's length.
1611 * On failure (i.e. when the tag wasn't the expected tag
1612 * (TestGroup, TestElement) the internal file pointer
1613 * \ref Document::Fp is restored to it's original position.
1614 * @param testGroup The expected group of the tag.
1615 * @param testElement The expected Element of the tag.
1616 * @return On success returns the length associated to the tag. On failure
1619 uint32_t File::ReadTagLength(uint16_t testGroup, uint16_t testElement)
1622 if ( !ReadTag(testGroup, testElement) )
1627 //// Then read the associated Item Length
1628 long currentPosition = Fp->tellg();
1629 uint32_t itemLength = ReadInt32();
1631 gdcmWarningMacro( "Basic Item Length is: "
1632 << itemLength << std::endl
1633 << " at address: " << std::hex << (unsigned int)currentPosition);
1639 * \brief When parsing the Pixel Data of an encapsulated file, read
1640 * the basic offset table (when present, and BTW dump it).
1642 void File::ReadAndSkipEncapsulatedBasicOffsetTable()
1644 //// Read the Basic Offset Table Item Tag length...
1645 uint32_t itemLength = ReadTagLength(0xfffe, 0xe000);
1647 // When present, read the basic offset table itself.
1648 // Notes: - since the presence of this basic offset table is optional
1649 // we can't rely on it for the implementation, and we will simply
1650 // trash it's content (when present).
1651 // - still, when present, we could add some further checks on the
1652 // lengths, but we won't bother with such fuses for the time being.
1653 if ( itemLength != 0 )
1655 char *basicOffsetTableItemValue = new char[itemLength + 1];
1656 Fp->read(basicOffsetTableItemValue, itemLength);
1659 for (unsigned int i=0; i < itemLength; i += 4 )
1661 uint32_t individualLength = str2num( &basicOffsetTableItemValue[i],
1663 gdcmWarningMacro( "Read one length: " <<
1664 std::hex << individualLength );
1668 delete[] basicOffsetTableItemValue;
1672 //-----------------------------------------------------------------------------
1675 //-----------------------------------------------------------------------------
1676 } // end namespace gdcm