[Insight-users] Registration (itk Plugin for volview)

[Atwood, Robert C]

Dear Luis:

Thank you, and whoever else worked on fixing the bug; the registration
works perfectly on the same test cases I tried before, including the
combined erosion and skew-axis rotation case. With 3 erosions and a
rotation of [ 0.58 -0.58 0.58 ] 0.4 it looks a little funny but it is
probably converging on a valid local minimum ; there is quite a lot of
overlap. 
 

If the initial orientation is close, is it more likely to converge on
the correct registration; i.e. is the optimizer more likely to find the
local minimum near to the starting location in the search space?

Robert







  

-----Original Message-----
From: Luis Ibanez [mailto:luis.ibanez at kitware.com] 
Sent: 07 July 2004 02:36
To: Atwood, Robert C
Cc: Insight-users at itk.org
Subject: Re: [Insight-users] Registration (itk Plugin for volview)




Hi Robert,


A bug on the Jacobian computation of the itkVersorRigid3DTransform was
fixed last week.  New versions of the VolView plugins have been
generated after the bug was fixed.


You can download the DLLs of this new plugins from

             public.kitware.com

           /pub/itk/VolViewPlugins


Please let us know if this new version of the plugins work for
registering your images.


   Thanks



       Luis


------------------------
Atwood, Robert C wrote:

> Dear Luis:
> First, I am not sure how to determine the version number of a plugin 
> DLL downloaded from public.kitware.com. However, I have two versions 
> which I will cal the 'Old' and the 'New'.
> 
> The Old appears to have the date '11/12/2003', and the New was 
> downloaded from public.kitware.com yesterday and appears to have the 
> date '040518' on that site (though I am not sure how far to trust 
> windows-reported dates ;-)
> 
> The shrinking behaviour occurs with the Old but so far not with the 
> New, however the initial registration is much better with the Old than

> it is with the New.
> 
> ... <snip>