[Insight-users] Help with conjugate gradient optimizer

[Luis Ibanez]

Hi Ashish,

What ITK version are you using ?

We made some recent changes to the VNL adapted optimizers
in order to make them report iterations.

If you update to the CVS version of ITK, you should get
iteration events from the optimizer.


Please let us know if you still find any problems.


   Thanks


    Luis



----------------------
Ashish Poddar wrote:

> I tried to plugin the observer like regular step gradient descent 
> optimizer, but it was never called for the internal iterations. Is 
> this a bug or a restraint for this algorithm?
>  
> I was also trying to trace the code, and there is a provision of 
> preconditioning in which {vnl_conjugate_gradient::preconditioner_} 
> function is called. probably my guess is the observer can be linked in 
> here.
>  
> any help / guidelines will be highly appreciated.
>  
> with regards,
> Ashish.
> 
> -- 
> Ashish Poddar
> Have an acceptable reason for accepting anything.
> Y:ashish_poddar | MSN:ashish_poddar at yahoo.com 
> <mailto:MSN:ashish_poddar at yahoo.com>
> 
> 
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