[Insight-users] Bug Report: itkZeroFluxNeumannBoundaryCondition.h

[Mengqiu Tian]

Hi Cory and David,

Thanks for reply.
Actually, I tried both MirrorPadImageFilter and
ZeroFluxNeumannPadImageFilter. Unfortunately, in MirrorPadImageFilter, the
0 indices  width but in ZeroFluxNeumannPadImageFilter it behaves opposite
way.
Regarding the general view of image, I think 0 indices height would be more
reasonable, similar as behavior in Matlab.
It is ok if it would not be corrected, I just swap my codes :)

Regards,
Mengqiu


On Fri, Feb 17, 2012 at 3:43 AM, Cory Quammen <cquammen at cs.unc.edu> wrote:

> Thanks for the report. I think the figures for the other
> PadImageFilter filters are wrong. The indices 0 and 1 should be
> swapped in the figures.
>
> David, I think you made these figures originally. Do you concur that
> the indices should be swapped in the figures?
>
> Thanks,
> Cory
>
> On Thu, Feb 16, 2012 at 12:03 PM, Mengqiu Tian <tianmengqiu at gmail.com>
> wrote:
> > Hi all,
> >
> > I am using itkZeroFluxNeumannPadImageFilter.h to pad my image, here I
> found
> > a bug.
> >
> > According to other PadImageFilter, take MirrorPadImageFilter for example:
> >
> > http://www.itk.org/Doxygen/html/classitk_1_1MirrorPadImageFilter.html
> >
> > lowerBound[0] and upperBound[0] should correspond to vertical direction.
> >
> > But ZeroFluxNeumannPadImageFilter does not consist with this behavior.
> > lowerBound[0] and upperBound[0] corrspond to horizontal direction in this
> > case.
> > Although it is not a big deal, it might cause misunderstanding. I think
> it
> > is better to correct it.
> >
> > Hope it helps. :)
> >
> > Regards,
> > Mengqiu Tian
> >
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>
> --
> Cory Quammen
> Research Associate
> Department of Computer Science
> The University of North Carolina at Chapel Hill
>
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