[Insight-users] regularStepGradientDescent problem

[Luis Ibanez]

Hi Christos,

If you want to use the Affine translation to produce only
translations, you can simply initialize it with SetIdentity();
and the call Translate();

http://www.itk.org/Insight/Doxygen/html/classitk_1_1AffineTransform.html

Regards


    Luis



-------------------
Christos Panagiotou wrote:
> Dear luis
> 
> thanks for you reply
> 1. i ll try the regular gradient descent with the mattes implementation 
> ( the normalized histogram mutual information image 2 image metric would 
> do as an alternative?)
> 2. i ll try the mutual information with the one+one evolutionary 
> algorithm too.
> 
> a question: to get the metric values for translations for example means 
> that i need to switch from an affine transformation to something simpler
> or there is a way a) to get only the translation values b) somehow make 
> the affine transformation to ignore rotations
> the same question also for rotations
> 
> my last question is just for implementation reasons...
> 
> thanks once again luis
> christos
> 
>