[vtkusers] Problems with vtkImageReslice

[David Gobbi]

It looks like an integer overflow problem.  Perhaps the data is "unsigned
short" but was read as "short"?

Just in case the Cubic interpolation is causing overflow (since cubic
interpolation has undershoots/overshoots), try linear interpolation:

resliceFilter->SetSlabModeToMaximum();
resliceFilter->SetSlabNumberOfSlices(3);
resliceFilter->SetInterpolationModeToLinear();

 - David


On Fri, Oct 27, 2017 at 5:38 AM, DJQ <836856733 at qq.com> wrote:

> vtkSmartPointer<vtkImageReslice> resliceFilter =
> vtkSmartPointer<vtkImageReslice>::New();
> resliceFilter->SetInputData(m_spVtkImageData);
> resliceFilter->SetOutputSpacing(resliceSpacing,resliceSpacing,
> resliceSpacing);
> resliceFilter->SetOutputSpacing(0.4,0.4,0.4);
> resliceFilter->SetSlabModeToMean();
> resliceFilter->SetSlabNumberOfSlices(1);
> resliceFilter->SetInterpolationModeToCubic();
> resliceFilter->Update();
>
> m_spVtkImageData=resliceFilter->GetOutput();
>
> I want to reslice the m_spVtkImageData to make it isotropic, as
> 0.4*0.4*0.4.
> However, when I use MIP to show this resliced image, it suggests that there
> must be some problems. What's wrong with that?
>
>
> <http://vtk.1045678.n5.nabble.com/file/t342141/MIP.png>
>
> <http://vtk.1045678.n5.nabble.com/file/t342141/ImageResliced.png>
>
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