[Insight-users] MultiResolutionImageRegistrationMethod: passing Tform parameters between levels

[Felix Bollenbeck]

Hello all,

I have I question regarding the MultiResolutionImageRegistrationMethod 
and passign the current-level parameter to the next level:

At the end of one resolution level the transformparameters of the 
current level are stored:

MultiResolutionImageRegistrationMethod.txx  line 312:

      if ( m_CurrentLevel < m_NumberOfLevels - 1 )
        {
        m_InitialTransformParametersOfNextLevel =
          m_LastTransformParameters;

And in the next level iteration these are used for intialization:

MultiResolutionImageRegistrationMethod.txx  line 108:

  m_Optimizer->SetInitialPosition( 
m_InitialTransformParametersOfNextLevel );

I do not understandt how  the transform parameters adapted to now larger 
image - for example translations?

Thanks for your help,

    Felix.