[Paraview] problems with ServerManagerConfiguration and vtkImageReslice

[Jérôme]

I don't have any problem running Median or Gradient on image of type
double. If you are allowed to share your data, I may give a try here.

Maybe are you running out of memory? You can try to extract a subset
of your data and see if the segfault occurs.

Jerome

2011/5/20 Dominik Szczerba <dominik at itis.ethz.ch>

> Hi Jerome,
>
> Thanks for the references, but there does not to be any solution in there?
> And yes, "strange extents" are also taking place in some cases, i.e.,
> extents are actually correct, but the content of the image data is
> smaller if the new spacing is finer than the original.
> Due to the lack of detailed description of this whole mechanism I can
> not say if this is my lack of knowledge or a bug.
>
> Regarding segfaults, the only non-standard thing I can say about my
> input image data is that it contains a scalar type "double". The said
> filters will work with image generated by Sources/Wavelet, but the
> type of that one is float. I am afraid something is hardcoded
> somewhere.
>
> Regards,
> Dominik
>
> On Fri, May 20, 2011 at 8:25 AM, Jérôme <jerome.velut at gmail.com> wrote:
> > Hi,
> > regarding the vtkImageSlice exposition in ParaView, you should take
> > a look at these threads:
> > - issue report:
> >    http://www.mail-archive.com/paraview@paraview.org/msg02225.html
> >    http://www.mail-archive.com/paraview@paraview.org/msg08260.html
> > - issue deep explanation:
> >    http://www.cmake.org/pipermail/paraview/2010-June/017738.html
> >
> > regarding the segfault, I feel surprise ! I use Median and Gradient very
> > often, and I never noticed a bug. Can you give the step to reproduce ?
> >
> > Best regards,
> > Jerome
> >
> >
> > 2011/5/19 Dominik Szczerba <dominik at itis.ethz.ch>
> >>
> >> I think my theory that it has to do with threading may be correct...
> >>
> >> I just tried instead of my custom plugin to run the built-in Gradient
> >> or Median on my vtkImageData and Paraview (3.11) silently segfaults.
> >> Both these built-in filters derive from vtkThreadedImageAlgorithm.
> >> Built-in vtkExtractVOI. however, works correctly, just as my other
> >> custom plugins deriving from vtkImageAlgorithm.
> >>
> >> Any pointers in this bug hunting are appreciated.
> >>
> >> Dominik
> >>
> >> On Thu, May 19, 2011 at 9:30 PM, Dominik Szczerba <dominik at itis.ethz.ch
> >
> >> wrote:
> >> > So far I was able to add a few simple custom plugins, but am slowly
> >> > losing the grip.
> >> > I am trying to resample an image like this:
> >> >
> >> > <SourceProxy name="ImageResample" class="vtkImageResample"
> >> > label="ImageResample">
> >> > <InputProperty name="Input" command="SetInputConnection">
> >> >        <ProxyGroupDomain name="groups">
> >> >                <Group name="sources"/>
> >> >                <Group name="filters"/>
> >> >        </ProxyGroupDomain>
> >> >        <DataTypeDomain name="input_type">
> >> >                <DataType value="vtkImageData"/>
> >> >        </DataTypeDomain>
> >> > </InputProperty>
> >> > <DoubleVectorProperty name="Magnification Factor"
> >> > command="SetAxisMagnificationFactor" number_of_elements="3"
> >> > number_of_elements_per_command="1" repeat_command="1" use_index="1"
> >> > default_values="1 1 1"/>
> >> >
> >> > I get these 2 problems:
> >> >
> >> > 1) There appear two (!) outputs (named Output-0 and Output-1). I get
> >> > this message:
> >> >
> >> > ERROR: In
> >> > /home/dsz/pack/ParaView/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
> >> > line 827
> >> > vtkPVPostFilterExecutive (0x3aa4f60): Input for connection index 0 on
> >> > input port index 0 for algorithm vtkPVPostFilter(0x2cfb850) is of type
> >> > vtkImageStencilData, but a vtkDataSet is required.
> >> >
> >> > 2) The first output has the expected Spacing, but it does not contain
> >> > the same scalar array as in the input. Instead, it contains a new
> >> > array ImageScalars ranging [0,0]. I get this message:
> >> >
> >> > Warning: In
> >> >
> /home/dsz/pack/ParaView/ParaViewCore/VTKExtensions/vtkTexturePainter.cxx,
> >> > line 179
> >> > vtkTexturePainter (0x339fa70): Failed to locate selected scalars. Will
> >> > use image scalars by default.
> >> >
> >> > I have been so far successful with other image algorithms, however
> >> > they were all deriving from vtkImageAlgorithm. This one derives from
> >> > vtkThreadedImageAlgorithm - could this have anything to do here?
> >> > Could anyone point me into the right direction? After inspection of
> >> > the xml files in the ParaView source tree I am still clueless.
> >> >
> >> > Thanks and regards,
> >> > Dominik
> >> >
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