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IDProjectCategoryView StatusDate SubmittedLast Update
0003111VTK(No Category)public2006-04-07 20:552016-08-12 09:54
ReporterRolf Mueller 
Assigned ToWill Schroeder 
PrioritylowSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0003111: vtkImageIslandRemoval2D & vtkImageDataStreamer don't work together
DescriptionI am trying to use vtkImageIslandRemoval2D in a pipeline with streaming image data. An example code snippet of what I am trying to do is given below. If I do not call the Update-method of vtkImageDataStreamer, I get a segmentation fault (in vtkImageDataCastExecute ultimately called by vtkPNGWriter::Write()). If I do call it, I get a set of output images, but they are mostly black. This happens for different numbers of stream divisions. I am using the cvs version of vtk (April 7th, 2006) and g++ (GCC) 4.0.3 (Debian 4.0.3-1).

example code snippet:

vtkImageData *idata = vtkImageData::New();
idata->SetScalarTypeToUnsignedChar();
idata->SetExtent(0, nx-1, 0, ny-1, 0, nz-1);
unsigned char *pt = (unsigned char*)(idata->GetScalarPointer());
for (k=0; k<(nx*ny*nz); k++)
 *(pt++)=255;

vtkImageIslandRemoval2D *ir = vtkImageIslandRemoval2D::New();
ir->SetInput(idata);
ir->SetAreaThreshold(2);
ir->SquareNeighborhoodOn();
ir->SetIslandValue(0);
ir->SetReplaceValue(255);

vtkImageDataStreamer *ids = vtkImageDataStreamer::New();
ids->SetInputConnection(ir->GetOutputPort());
ids->SetNumberOfStreamDivisions(nblk);
ids->UpdateInformation();
ids->GetExtentTranslator()->SetSplitModeToBlock();
ids->Update();

vtkPNGWriter *wrt = vtkPNGWriter::New();
wrt->SetInputConnection(ids->GetOutputPort());
wrt->SetFileDimensionality(2);
wrt->SetFilePrefix("islndstrmtst");
wrt->SetFilePattern("%s_%02u.png");
wrt->Write();
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  Notes
(0036854)
Kitware Robot (administrator)
2016-08-12 09:54

 Resolving issue as `moved`.

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 Issue History
Date Modified Username Field Change
2011-06-16 13:11 Zack Galbreath Category => (No Category)
2016-08-12 09:54 Kitware Robot Note Added: 0036854
2016-08-12 09:54 Kitware Robot Status expired => closed
2016-08-12 09:54 Kitware Robot Resolution open => moved

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