[Insight-users] ImageRegistration4

[Luis Ibanez]

Hi Ganesh,



            No, that line change is not enough.



You must also balance the number of parameters for
the Translation transform.

In particular,

lines 259-260

  initialParameters[0] = 0.0;  // Initial offset in mm along X
  initialParameters[1] = 0.0;  // Initial offset in mm along Y

should become

  initialParameters[0] = 0.0;  // Initial offset in mm along X
  initialParameters[1] = 0.0;  // Initial offset in mm along Y
  initialParameters[2] = 0.0;  // Initial offset in mm along Z


and lines 325-326:

  double TranslationAlongX = finalParameters[0];
  double TranslationAlongY = finalParameters[1];

should become:

  double TranslationAlongX = finalParameters[0];
  double TranslationAlongY = finalParameters[1];
  double TranslationAlongZ = finalParameters[2];



Without these additional changes you will be
running your code with uninitialized variables.


   Regards,


         Luis



-----------------------------------------------------------------
On Tue, May 25, 2010 at 2:10 PM, Ganesh Narayanasamy
<nganesh76 at hotmail.com>wrote:

>
> I converted the ImageRegistration4.cxx on MattesMutualInformation technique
> from 2D into 3D by changing line #123 from 2 to 3:
> const    unsigned int    Dimension = 3;
>
> Is that all that needs to be done?
> When I did Build Solution and ran the executable with 2 input images and a
> name for an output image, I got this error message:
>
>
> ****
> C:\Ganesh\ITK316\Build\bin\Debug>ImageRegistration4  P1T1Img1.mha P1T2
> Img2.mha Final_P1T1fT2m.mha
>
> ExceptionObject caught !
>
> itk::ExceptionObject (0146FB48)
> Location: "void __thiscall
> itk::MattesMutualInformationImageToImageMetric<class
> itk::Image<unsigned short,3>,class itk::Image<unsigned short,3>
> >::GetValueAndDe
> rivative(const class itk::Array<double> &,double &,class itk::Array<double>
> &) c
> onst"
> File:
> c:\ganesh\itk316\itk\code\algorithms\itkMattesMutualInformationImageToImag
> eMetric.txx
> Line: 1113
> Description: itk::ERROR:
> MattesMutualInformationImageToImageMetric(019441E0): To
> o many samples map outside moving image buffer: 0 / 10000
> ****
>
>
> Can you identify the error and let me know any corrective step?
> Thanks for your help,
> Ganesh
>
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