Re: VTKImageReslice: slow performance.

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Hi Abhishek,

It's the Update() method is what actually executes the filter. GetOutput()
is just a getter method that returns a pointer.

Can you provide a short code snippet so that we can see exactly how you are
using vtkImageReslice?

  David

On Fri, Jul 5, 2019 at 3:55 AM abhishek <[email protected]> wrote:

> Hello Group, I am having performance issues while extracting
> SAGGITAL/CORONAL
> planes using VTKImageReslice. Each call to VTKImageReslice->GetOutput()
> takes 5-7 ms.
>
> The volume used has the following properties:
> 1. Dimensions: 512x512x297
> 2. Pixel spacing: 0.4x0.4x0.7
> 3. Scalar type: Unsigned Int16
> 4. Number of components: 1 (Monochrome).
>
> System & Build environment:
> 1. Windows 7, 12GB RAM, i3 processor.
> 2. Visual studio 2013
> 2. VTK 7.1.1
> 3. WPF for UI
>
> Are there any known considerations for making VTKImageReslice fast?
>

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<div dir=3D"ltr"><div>Hi Abhishek,</div><div><br></div><div>It&#39;s the Up=
date() method is what actually executes the filter. GetOutput() is just a g=
etter method that returns a pointer.</div><div><br></div><div>Can you provi=
de a short code snippet so that we can see exactly how you are using vtkIma=
geReslice?</div><div><br></div><div>=C2=A0 David</div><br><div class=3D"gma=
il_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 5, 2019 at 3:55=
 AM abhishek &lt;<a href=3D"mailto:[email protected]">[email protected]=
om</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex=
">Hello Group, I am having performance issues while extracting SAGGITAL/COR=
ONAL<br>
planes using VTKImageReslice. Each call to VTKImageReslice-&gt;GetOutput()<=
br>
takes 5-7 ms.<br>
<br>
The volume used has the following properties:<br>
1. Dimensions: 512x512x297<br>
2. Pixel spacing: 0.4x0.4x0.7<br>
3. Scalar type: Unsigned Int16<br>
4. Number of components: 1 (Monochrome).<br>
<br>
System &amp; Build environment:<br>
1. Windows 7, 12GB RAM, i3 processor.<br>
2. Visual studio 2013<br>
2. VTK 7.1.1<br>
3. WPF for UI<br>
<br>
Are there any known considerations for making VTKImageReslice fast? <br>
</blockquote></div></div>

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