[Insight-users] Re: limiting the maximum angle of rotation

[Luis Ibanez]

Hi Shankar,

You may want to look at the LBFGSB Optimizer:

http://www.itk.org/Insight/Doxygen/html/classitk_1_1LBFGSBOptimizer.html

This optimizers supports "bound constrained optimization".

Another option is to implement this at the level of the Observer
that you connect to your current optimizer.

Notice, however, that in practice, if the angle of rotation is
growing too large, it is probably an indication that the scaling
that you are using for the transform parameters are not balanced
correctly.


You will find details on the settings for scaling the parameters
passed to the optimizer in the Image Registration chapter of the
ITK Software Guide:

       http://www.itk.org/ItkSoftwareGuide.pdf


Please let us know if you have further questions,


     Thanks


        Luis


-------------------------
shankar venkatesan wrote:
> Hi,
> 
>  
> 
>  I would like to limit the maximum angle of rotation used by, say, 
> ImageRegistration7. Is there a way to specify this? Thanks
> 
>  
> 
> SV
>