[Insight-users] NthElementImageAdaptor and ImageRegionIterators

[Luis Ibanez]

Hi Tomas,

It is a long story, but it comes down to the fact that
the IteratorsWithIndex provide better support for
image adaptors than the other iterators.

You may want to read the chapter on Image Iterators
in the ITK Software Guide


    http://www.itk.org/ItkSoftwareGuide.pdf



BTW:

What was your motivation for changing the Iterators ?



    Thanks


       Luis



------------------------
Tomáš Kazmar wrote:
> Hi,
> 
>   i derived some code from Hessian image filter (HessianRecursiveGaussianImageFilter).
> But it stopped working when i accidentaly changed iterators used there from
> ImageRegionIteratorWithIndex to plain ImageRegionIterator and it took its time to track
> the source of the error. So i would like to know why there is such difference.
> 
> It is not clear to me why copying a Image to an element of vector image (using
> NthElementImageAdaptor) works fine with ImageRegionIteratorWithIndex but not with
> ImageRegionIterator. Is it something straightforward i did not get? Can someone
> explain it?
> 
> 
> Regards,
> 
> Tomas
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