[Insight-users] 3D registration using Normalized Mutual Information Metric

[Karthik Krishnan]

The moment you start using Mutual information metrics, (or other metrics 
that need a histogram), you need to start linking against ITKStatistics. 
Check the CMakeLists.txt file and add ITKStatistics to the list of 
libraries to link against.

Smriti Raghunathan wrote:

> Hi,
> I am trying to resgister 3D data sets using the
> "ImageRegsitration8.cxx" algorithm in ITK. However, this code uses
> "VersorRigid3DTransform", "itkVersorRigid3DTransformOptimizer" and
> "itkMeanSquaresImageToImageMetric" as the registration metric.
>
> I was trying to change parts of this code so that it used the same
> transforms and optimizer but used the "Normalized Mutual Information
> Metric" as the registration metric. However, when I build the project
> and compile it, it gives me the following error when linking:
>
>
>
> Linking...
>   Creating library Debug/ImageRegistration8.lib and object
> Debug/ImageRegistration8.exp
> ImageRegistration8.obj : error LNK2001: unresolved external symbol
> "protected: __thiscall
> itk::Statistics::DenseFrequencyContainer::DenseFrequencyContainer(void)"
> (??0DenseFrequencyContainer at Statistics@itk@@IAE at XZ)
> ImageRegistration8.obj : error LNK2001: unresolved external symbol
> "public: float __thiscall
> itk::Statistics::DenseFrequencyContainer::GetFrequency(unsigned
> long)const " 
> (?GetFrequency at DenseFrequencyContainer@Statistics at itk@@QBEMK at Z)
> ImageRegistration8.obj : error LNK2001: unresolved external symbol
> "public: bool __thiscall
> itk::Statistics::DenseFrequencyContainer::SetFrequency(unsigned
> long,float)" 
> (?SetFrequency at DenseFrequencyContainer@Statistics at itk@@QAE_NKM at Z)
> ImageRegistration8.obj : error LNK2001: unresolved external symbol
> "public: bool __thiscall
> itk::Statistics::DenseFrequencyContainer::IncreaseFrequency(unsigned
> long,float)" 
> (?IncreaseFrequency at DenseFrequencyContainer@Statistics at itk@@QAE_NKM at Z)
> ImageRegistration8.obj : error LNK2001: unresolved external symbol
> "public: void __thiscall
> itk::Statistics::DenseFrequencyContainer::Initialize(unsigned long)"
> (?Initialize at DenseFrequencyContainer@Statistics at itk@@QAEXK at Z)
> ImageRegistration8.obj : error LNK2001: unresolved external symbol
> "public: void __thiscall
> itk::Statistics::DenseFrequencyContainer::SetToZero(void)"
> (?SetToZero at DenseFrequencyContainer@Statistics at itk@@QAEXXZ)
> Debug/ImageRegistration8.exe : fatal error LNK1120: 6 unresolved 
> externals
> Error executing link.exe.
>
> ImageRegistration8.exe - 7 error(s), 0 warning(s)
>
>
>
> I am not sure what exactly this error is indicating... any kind of
> help would be appreciated. If this is not helpful then i could send
> the modified code.
>
> thanks a lot
>
> Smriti
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