-//----------------------------------------------------------------------------
-//
-// Image Position Patient (0020,0032):
-// If not found (ACR_NEMA) we try Image Position (0020,0030)
-// If not found (ACR-NEMA), we consider Slice Location (0020,1041)
-// or Location (0020,0050)
-// as the Z coordinate,
-// 0. for all the coordinates if nothing is found
-
-// TODO : find a way to inform the caller nothing was found
-// TODO : How to tell the caller a wrong number of values was found?
-
-/**
- * \ingroup gdcmHeaderHelper
- * \brief gets the info from 0020,0032 : Image Position Patient
- *\ else from 0020,0030 : Image Position (RET)
- *\ else 0.
- * @return up-left image corner position
- */
-float gdcmHeaderHelper::GetXOrigin() {
- float xImPos, yImPos, zImPos;
- std::string StrImPos = GetPubElValByNumber(0x0020,0x0032);
-
- if (StrImPos == GDCM_UNFOUND) {
- dbg.Verbose(0, "gdcmHeader::GetXImagePosition: unfound Image Position Patient (0020,0032)");
- StrImPos = GetPubElValByNumber(0x0020,0x0030); // For ACR-NEMA images
- if (StrImPos == GDCM_UNFOUND) {
- dbg.Verbose(0, "gdcmHeader::GetXImagePosition: unfound Image Position (RET) (0020,0030)");
- // How to tell the caller nothing was found ?
- return 0.;
- }
- }
- if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
- return 0.;
- return xImPos;
-}
-//----------------------------------------------------------------------------
-/**
- * \ingroup gdcmHeaderHelper
- * \brief gets the info from 0020,0032 : Image Position Patient
- * \ else from 0020,0030 : Image Position (RET)
- * \ else 0.
- * @return up-left image corner position
- */
-float gdcmHeaderHelper::GetYOrigin() {
- float xImPos, yImPos, zImPos;
- std::string StrImPos = GetPubElValByNumber(0x0020,0x0032);
-
- if (StrImPos == GDCM_UNFOUND) {
- dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Image Position Patient (0020,0032)");
- StrImPos = GetPubElValByNumber(0x0020,0x0030); // For ACR-NEMA images
- if (StrImPos == GDCM_UNFOUND) {
- dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Image Position (RET) (0020,0030)");
- // How to tell the caller nothing was found ?
- return 0.;
- }
- }
- if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
- return 0.;
- return yImPos;
-}
-//----------------------------------------------------------------------------
-/**
- * \ingroup gdcmHeaderHelper
- * \brief gets the info from 0020,0032 : Image Position Patient
- * \ else from 0020,0030 : Image Position (RET)
- * \ else from 0020,1041 : Slice Location
- * \ else from 0020,0050 : Location
- * \ else 0.
- * @return up-left image corner position
- */
-float gdcmHeaderHelper::GetZOrigin() {
- float xImPos, yImPos, zImPos;
- std::string StrImPos = GetPubElValByNumber(0x0020,0x0032);
- if (StrImPos != GDCM_UNFOUND) {
- if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3) {
- dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Image Position Patient (0020,0032)");
- return 0.; // bug in the element 0x0020,0x0032
- } else {
- return zImPos;
- }
- }
- StrImPos = GetPubElValByNumber(0x0020,0x0030); // For ACR-NEMA images
- if (StrImPos != GDCM_UNFOUND) {
- if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3) {
- dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Image Position (RET) (0020,0030)");
- return 0.; // bug in the element 0x0020,0x0032
- } else {
- return zImPos;
- }
- }
- std::string StrSliceLocation = GetPubElValByNumber(0x0020,0x1041);// for *very* old ACR-NEMA images
- if (StrSliceLocation != GDCM_UNFOUND) {
- if( sscanf( StrSliceLocation.c_str(), "%f", &zImPos) !=1) {
- dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Slice Location (0020,1041)");
- return 0.; // bug in the element 0x0020,0x1041
- } else {
- return zImPos;
- }
- }
- dbg.Verbose(0, "gdcmHeader::GetZImagePosition: unfound Slice Location (0020,1041)");
- std::string StrLocation = GetPubElValByNumber(0x0020,0x0050);
- if (StrLocation != GDCM_UNFOUND) {
- if( sscanf( StrLocation.c_str(), "%f", &zImPos) !=1) {
- dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Location (0020,0050)");
- return 0.; // bug in the element 0x0020,0x0050
- } else {
- return zImPos;
- }
- }
- dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Location (0020,0050)");
- return 0.; // Hopeless
-}
-//----------------------------------------------------------------------------
-/**
- * \ingroup gdcmHeaderHelper
- * \brief gets the info from 0020,0013 : Image Number
- * \ else 0.
- * @return image number
- */
-int gdcmHeaderHelper::GetImageNumber() {
- //The function i atoi() takes the address of an area of memory as parameter and converts
- //the string stored at that location to an integer using the external decimal to internal
- //binary conversion rules. This may be preferable to sscanf() since atoi() is a much smaller,
- // simpler and faster function. sscanf() can do all possible conversions whereas atoi() can
- //only do single decimal integer conversions.
- std::string StrImNumber = GetPubElValByNumber(0x0020,0x0013); //0020 0013 IS REL Image Number
- if (StrImNumber != GDCM_UNFOUND) {
- return atoi( StrImNumber.c_str() );
- }
- return 0; //Hopeless
-}
-//----------------------------------------------------------------------------