[Insight-users] Registration performance

[Li, George (NIH/NCI)]

Hi, Luis:

Sometime ago, you commented on improving performance
As the following. I now understand what you meant by
Multi-resolution. However, is there any sample code
For its implementation?

>Trivial answer to your question about performance:
>
>             The way to improve performance
>              is to use multi-resolution.
>
>You can register volumes of size 200x200x200 pixels 
>in about 20 seconds when using 3 levels of a multi-
>resolution pyramid, by subsampling by 2 at each level, 
>in a typical Pentium 4 machine at 2Ghz, and 512Mb of 
>memory.

Now, it seems that the registration performance has
Become a big issue to me, and some 20 seconds for a 
Registration is much attractive, comparing with a few 
minutes.

So, could you further provide some guidance on it?

Thanks,

George