[Insight-users] setting initial parameters for itkVersorRigid3DTransform

[Karthik Krishnan]

Hi Rick,

To correct myself, as the documentation and Luis mentions, SetMatrix is
not a safe way to initialize the versor. The versor is not set in the
process. 


  /** This method must be made protected here because it is not a safe
way of
   * initializing the Versor */
  virtual void SetRotationMatrix(const MatrixType & matrix)


Instead, construct an itk::Versor, use its SetMatrix method and set the
VersorRigid3DTransform to that matrix

Sorry about the confusion.

-karthik

On Sat, 2006-05-20 at 21:58 -0400, Karthik Krishnan wrote:
> Yes you can use the methods SetMatrix and SetOffset(). All transforms
> that derive from MatrixOffsetTransformBase convert their representations
> to a rotation matrix and offset internally. See the ComputeMatrix()
> method in itkVersorTransform.txx
> 
> -karthik
> 
> On Thu, 2006-05-18 at 15:14 -0700, Rick Shilling wrote:
> > I want to provide an initial guess for an itkVersorRigid3DTransform
> > registration object in the form of a rotation matrix & translation
> > directly without converting it to a versor. I have
> > 
> > TransformType::MatrixType matrix;
> > TransformType::OffsetType offset;
> > .
> > .
> > .
> > Is it possible to set the itktransform object directly to a matrix &
> > offset directly or do I need to convert it explicitly?  (I didn't see
> > an example in ITK guide) Thanks.  
> > 
> > Rick
> > 
> > 
> > 
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