[Insight-users] Rigid registration with translation restricted to single axis?

[Luis Ibanez]

Hi George,

You are correct.
This is fairly easy to accomplish.

The main two options are:

A) Write a customized Transform class.

B) Use the Scaling parameters of the optimizer.
    along with a standard Translation Transform.


Option (B) will mostly "discourage" the optimizer
from moving along one of the axis. So, if you really
want to enforce a single axis movement, then
option (A) is your best bet.


You basically has to copy/paste the current
itkTranslationTransform class into a new one

and modify:

0)    Make this new transform derive from itkTranslationTransform

1)    itkStaticConstMacro(ParametersDimension, unsigned int, NDimensions);
       to be
       itkStaticConstMacro(ParametersDimension, unsigned int, 1 );

2)   Overload the methods

      SetParameters()
      GetParameters()
      GetJacobian()




   Regards


        Luis


-------------------------------------------------------------------
On Mon, May 24, 2010 at 7:53 AM, g c <gc12358 at googlemail.com> wrote:
> Hi,
>
> I would like to rigidly register two 2D images, where the translation
> should be restricted to a single axis (say the x-axis). I suppose this
> should be fairly straightforward, perhaps by modifying the
> itk::TranslationTransform class? Has anyone already done this before?
> Any suggestion appreciated.
>
> Best regards,
>
> George
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
>