[Insight-users] Bug Report: itkZeroFluxNeumannBoundaryCondition.h

[Cory Quammen]

I posted a patch fixing the figures for the pad image filters here:

http://review.source.kitware.com/#/c/4416/

Cory

On Mon, Feb 27, 2012 at 2:31 PM, Cory Quammen <cquammen at cs.unc.edu> wrote:
> Mengqiu,
>
> I cannot reproduce the behavior you are seeing. Please see the
> attached program and CMakeLists.txt file that exercises the four pad
> image filters. They all behave the same way, that is, the 0 index
> corresponds to padding in the x direction and the 1 index corresponds
> to the y direction.
>
> Cheers,
> Cory
>
> On Fri, Feb 17, 2012 at 6:47 AM, Mengqiu Tian <tianmengqiu at gmail.com> wrote:
>> 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
>>
>>
>
>
>
> --
> Cory Quammen
> Research Associate
> Department of Computer Science
> The University of North Carolina at Chapel Hill



-- 
Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill