[Insight-users] About the metric derivative of image registration

[Huanxiang Lu]

Hello,

 

I am creating a new metric using CUDA implementation. So far I found it is
very difficult to get the derivative value from my implementation. I'd like
to know if there is an optimizer in ITK which is derivative free. Or is
there any other way to calculate the derivative value?

 

Thanks a lot!

 

Huanxiang Lu

 

 

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