[ITK] [ITK-users] Problem applying landmarks in FEM registration

[Vikas]

Hi,

I am having issues applying landmarks to FEM registration and would
appreciate any help to resolve it.

I am following the example in RegistrationITKv4/DeformableRegistration11
with the following modification:

  //Add landmartks
  RegistrationType::PointType SourceLandmark;
  RegistrationType::PointType TargetLandmark;

SourceLandmark[0] = 23;SourceLandmark[1] = 12;SourceLandmark[2] = 41;
  TargetLandmark[0] = 26;TargetLandmark[1] = 16;TargetLandmark[2] = 45;
  registrationFilter->AddLandmark(SourceLandmark,TargetLandmark);

registrationFilter->SetUseLandmarks(true);


I get a run time error: "Vector subscript out of range".

The call stack is as follows:
>    msvcp90d.dll!std::_Debug_message(const wchar_t *
message=0x000000013fa48fc8, const wchar_t * file=0x000000013fa49010,
unsigned int line=779)  Line 24    C++
     HybridRegistration.exe!std::vector<itk::fem::Element const *
__ptr64,std::allocator<itk::fem::Element const * __ptr64>
>::operator[](unsigned __int64 _Pos=0)  Line 780    C++

HybridRegistration.exe!itk::fem::FEMRegistrationFilter<itk::Image<float,3>,itk::Image<float,3>,itk::fem::FEMObject<3>
>::ApplyLoads(itk::Size<3> ImgSz={...}, double *
scaling=0x0000000000000000)  Line 410 + 0x35 bytes    C++

HybridRegistration.exe!itk::fem::FEMRegistrationFilter<itk::Image<float,3>,itk::Image<float,3>,itk::fem::FEMObject<3>
>::MultiResSolve()  Line 1173    C++

HybridRegistration.exe!itk::fem::FEMRegistrationFilter<itk::Image<float,3>,itk::Image<float,3>,itk::fem::FEMObject<3>
>::RunRegistration()  Line 169    C++
     HybridRegistration.exe!main(int argc=1, char * *
argv=0x0000000002546b40)  Line 225    C++
     HybridRegistration.exe!__tmainCRTStartup()  Line 586 + 0x19 bytes    C
     HybridRegistration.exe!mainCRTStartup()  Line 403    C


Thanks
Vikas
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