[Paraview] problems with ServerManagerConfiguration and vtkImageReslice

[Dominik Szczerba]

Hi,

My data is here, I would be glad if you tried it out.

http://otoro.itis.ethz.ch/~dominik/tmp/Image.vti

My ParaView is several days old git.

Thanks and regards,
Dominik

On Fri, May 20, 2011 at 8:51 AM, Jérôme <jerome.velut at gmail.com> wrote:
> 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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