[Insight-developers] InterpolateImageFunction and Threads

[kent williams]

I kinda figured that out after I posted that note.  Actually I am adding a
second interpolator, for the deformation field, so that the resolution of
the output doesn¹t have to match the resolution of the deformation field.


On 3/13/09 2:04 PM, "Karthik Krishnan" <karthik.krishnan at kitware.com> wrote:

> On Fri, Mar 13, 2009 at 1:13 PM, kent williams <norman-k-williams at uiowa.edu>
> wrote:
>> Hi. I'm working on enhancing the WarpImageFilter to work with
>> DeformationFields with resolution/spacing different than the output image
>> size.
>> 
>> To do this I am using itk::VectorLinearInterpolateImageFunction, to get a
>> deformation field at a particular physical point, rather than simply using
>> an ImageRegionIterator.
>> 
>> My question is this: The most natural thing to do is to instantiate the
>> interpolater right before where it's used, in ThreadedGenerateData.  But
>> this means it will get created/destroy for each thread.
>> 
>> Can I create one interpolater in BeforeThreadedGenerateData, and use it in
>> all threads? It looks like it's thread safe.
> 
> Isn't this already done in itkWarpImageFilter.txx now ? There is a single
> interpolator that is created once in BeforeThreadedGenerateData.
> 
> Thanks
> --
> karthik
> 
> 
> 




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