[Insight-developers] imageregionsplitter migration

[Bradley Lowekamp]

Hello Marius,

The region argument is taken as the largest region as input and is modified in place to become the splitted region as output. A similar change to what you need was made in the ImageStreamingFilter here:

https://github.com/Kitware/ITK/commit/d84ddc8a8b72f39a07bd4e76e136e046168e28bb#L2L21

Brad


On Apr 17, 2013, at 3:58 AM, m.staring at lumc.nl wrote:

> Hi Brad, others,
>  
> I am trying to convert my code to use the recently modified ImageRegionSplitter classes.
>  
> The migration guide + the header comments suggests that a simple change from
> itk::ImageRegionSplitter<Dim>::Pointer splitter;
> to
> itk::ImageRegionSplitterSlowDimension::Pointer splitter;
> should be enough.
>  
> However in my code it is not.
> I used typedefs from the now deprecated class, that are not in the new class. For example the RegionType and SizeType. I was able to work around that by adding my own typedefs for these things.
> Secondly, the function signature of GetSplit changed. Previously it returned a new splitted region, but now it returns an unsigned int. I am not sure how to use this function.
>  
> The full signature used to be:
> virtual RegionType GetSplit(unsigned int i,
> unsigned int numberOfPieces,
>                                 const RegionType & region);
> and now is:
> unsigned int GetSplit( unsigned int i,
>                            unsigned int numberOfPieces,
>                            ImageRegion<VImageDimension> & region ) const
>  
> I was expecting that the argument "region" is the full region, and that the function returns a new splitted region.
>  
> How do I get the splitted region from the new function?
>  
> Regards, Marius
>  
> Marius Staring, PhD
> Division of Image Processing (LKEB)
> Department of Radiology
> Leiden University Medical Center
> PO Box 9600, 2300 RC Leiden, The Netherlands
> phone: +31 (0)71 526 2137, fax: +31 (0)71 524 8256
> m.staring at lumc.nl
>  
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