[Insight-developers] FEM Registration : dsrc2c.c : Copyrights

[Nicholas Tustison]

Hi Luis,

Very interesting and quite unfortunate.  Finding a robust sparse  
matrix solver is a priority in the list of improvements of the FEM  
library that we intend to make.  Unfortunately, I have yet to find  
something which suits our needs.

Nick

On Nov 3, 2006, at 3:28 PM, Luis Ibanez wrote:

>
>
> Hi Jim, Nick,
>
>
> As you probably saw in the mailing list,
> we have recently removed the file
>
>
>    Insight/Code/Numerics/FEM/dsrc2c.c
>
>
> because it is copyrighted by IMSL and we
> do not have a license for distributing
> the code.
>
> One of the consequences of this removal
> is that the classes
>
>   itkFEMItpackSparseMatrix
>   itkFEMLinearSystemWrapperItpack
>
> were removed as well.
>
> These two classes where used in the
>
>   itkFEMRegistrationFilter
>
>
> as replacement, we use now the ITK wrapper
> over the VNL linear system solver. However,
> this one is not as efficient as the previous
> one.
>
>
> We are wondering if you are aware of other
> efficient linear solver for sparse matrices
> for which we could get the source with a
> license compatible the the BSD-like license
> used by ITK.
>
> We will appreciate any hints,
>
>
>   Thanks
>
>
>      Luis
>
>
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