[Insight-users] Question about itk::WarpImageFilter

[Fotis Drakopoulos]

Actually I am asking this because I have an example where  itk::WarpImageFilter
creates a discontinuous image.

According  the ThreadedGeneratedData function of the
itk::WarpImageFilter  there
is no check about if the calculated output voxel  lie inside or outside the
deformation field.
In the case that lie outside (field value = 0) and the value of the input
image is non-zero, then a non-zero value will assign to the output voxel.
How can we assign a non zero value to the output voxel if this voxel lie
outside the deformation field?

Regards





On Sun, Jul 15, 2012 at 7:01 PM, David Doria <daviddoria at gmail.com> wrote:

> On Sun, Jul 15, 2012 at 6:35 PM, Yixun Liu <yxliuwm at gmail.com> wrote:
>
>> The direction of the displacement is from output to input.
>>
>> Yixun
>>
>>
> Fotis,
>
> Now that Yixun has answered your question, it would be great if you would
> add this information to the Doxygen documentation so that others do not
> have the same confusion in the future. When you go to this page:
>
> http://www.itk.org/Doxygen/html/classitk_1_1WarpImageFilter.html
>
> you will find an "Edit Comments" link near the class name at the top. It
> will allow you to edit the comment for the SetDisplacementField() function
> so you can include this crucial information. Alternatively, you could
> manually push a documentation patch to Gerrit, but this web interface has
> been designed so that you do not need to know how to do it manually for
> such a small patch :)
>
> Please let us know if you have any problems,
>
> David
>
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