[Insight-users] updated n4itk

[Nick Tustison]

Hi Andriy,

I think with the most recent update, we've stabilized the modifications that
we've made to N4ITK.  We've pretty much left the itkN3MRI...Filter class
intact but introduced an additional filter to the Source, itkN4MRI...Filter,
which contains all the modifications that we've made since the last update.
 We also included the interface code, N4.cxx, which gives the user access to
all the parameters on the command line.  This is the code that I use for my
various processing workflows.  N4.cxx also accommodates specifying the
"spline distance" by adding a padding/extraction pre/post processing step in
case one would like to set the knot distances that way.  You'll also see
that itkN4MRI...Filter optimizes within a multi-resolution framework
(similar to FFD image registration).  Based on my experience, I use the
itkN4MRI...Filter class but I've included both for completeness.  Let me
know if you find anything that needs to be corrected.

Nick



On Fri, Nov 6, 2009 at 2:56 PM, Andriy Fedorov <fedorov at bwh.harvard.edu>wrote:

> Nick,
>
> Thank you for keeping me up to date! I appreciate this, and your work
> on further improving this code.
>
> AF
>
>
> On Fri, Nov 6, 2009 at 14:40, Nicholas Tustison <ntustison at gmail.com>
> wrote:
> > Hi Andriy,
> > Since you've expressed interest, I thought you'd like to know that there
> is
> > an updated version of the n3 bias correction filter on the IJ website.
>  The
> > changes weren't bug corrections but they definitely improve performance
> for
> > levels < 4. Details are given in the new documentation in Section 2.2.
> Let
> > me know if you have any questions/problems.
> > http://hdl.handle.net/10380/3053
> > Nick
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20091117/ba412ac4/attachment-0001.htm>