[Insight-users] QuaternionRigidTransform SetRotation

[tony hakki]

yes I am doing this for initializing the transform before registration. By the way at the end of the Pointsettoimageregistration  i get finalparameters,shouldn't I calculate these parameters opposite,because these parameters belong to image ,i mean they indicates that how far image will transform and how far it will rotate. But I would like to apply these finalparameters to my pointset. For this reason I use TransformMeshFilter.  When I get the inverse of the final transform (  finalTransform2->GetInverse(finalTransform2);)the new  translation parameters  are calculated,but rotation parameters not renew? If I  am right,is there a way to find the opposite rotation patameters. 

typedef itk::TransformMeshFilter<
FMeshType,
FMeshType,
TransformType > FilterType;
 
FilterType::Pointer filter = FilterType::New();
filter->SetInput( outputMesh); 
filter->SetTransform(finalTransform ); 
filter->Update();
FMeshType::Pointer outputMesh2 = filter->GetOutput();




----- Original Message ----
From: Luis Ibanez <luis.ibanez at kitware.com>
To: tony hakki <tony2007vtk at yahoo.com>
Cc: insight-users at itk.org
Sent: Saturday, March 31, 2007 7:33:28 PM
Subject: Re: [Insight-users] QuaternionRigidTransform SetRotation


Hi Tony,

Are you doing this for Initializing the transform
before starting the registration process ?


Please look at the documentation of this class:
http://www.itk.org/Insight/Doxygen/html/classitk_1_1QuaternionRigidTransform.html

You can call the SetRotationMatrix() method.




    Regards,


       Luis



--------------------
tony hakki wrote:
> Hello;
> I am trying to implement pointsettoimageregistration and I use 
> QuaternionRigidTransform class. How should I set the rotation of this 
> transform?for example I set the translation like that  
> *finalTransform->SetTranslation( centerMovingimage - centerFixedpointset 
> );*  translation works fine ,but i also have to set rotation  . how can 
> I calculate the rotation matrix? I hope somebody will help me.
> Thank you very but very much
> Tony
> 
> ------------------------------------------------------------------------
> 
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> Insight-users at itk.org
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