Hi,<br>You should be more precise about your problem. I guess you missed a resample->Update() before setting the input of colorMap, but not for sure. <br><br>Jerome<br><br><div class="gmail_quote">2009/12/2 Karl <span dir="ltr"><<a href="mailto:bulkmailaddress@gmail.com">bulkmailaddress@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
<br>
I am attempting unsuccessfully to use vtkImageResample to change the spacing<br>
of an image.<br>
I have a 3D volume that is being resliced with a vtkImagePlaneWidget. I am<br>
then requesting the slice.<br>
The code works fine until I add this filter, can anyone tell me what I am<br>
doing wrong.<br>
<br>
Thanks<br>
KB<br>
<br>
Code before filter is added (executes with no problem):<br>
_________________________________________<br>
vtkSmartPointer<vtkImageData> ImageSliceInfo::GetSliceData(QString<br>
sliceName)<br>
{<br>
// use vtkImageMapToColors to map to 8-bit for output<br>
vtkImageMapToColors* colorMap = vtkImageMapToColors::New();<br>
colorMap->PassAlphaToOutputOff();<br>
colorMap->SetActiveComponent(0);<br>
colorMap->SetOutputFormatToLuminance();<br>
colorMap->SetInput(planeWidget->GetResliceOutput());<br>
colorMap->SetLookupTable(planeWidget->GetLookupTable());<br>
<br>
vtkSmartPointer<vtkImageData> slice = colorMap->GetOutput();<br>
<br>
colorMap->Delete();<br>
return slice;<br>
}<br>
<br>
<br>
<br>
Code after filter is added:<br>
__________________________________________<br>
vtkSmartPointer<vtkImageData> ImageSliceInfo::GetSliceData()<br>
{<br>
// resample to isotropic spacing<br>
vtkImageResample* resample = vtkImageResample::New();<br>
resample->SetInput(planeWidget->GetResliceOutput());<br>
resample->SetDimensionality(2);<br>
resample->SetAxisOutputSpacing(0,1);<br>
resample->SetAxisOutputSpacing(1,1);<br>
<br>
// use vtkImageMapToColors to map to 8-bit for output<br>
vtkImageMapToColors* colorMap = vtkImageMapToColors::New();<br>
colorMap->PassAlphaToOutputOff();<br>
colorMap->SetActiveComponent(0);<br>
colorMap->SetOutputFormatToLuminance();<br>
colorMap->SetInput(resample->GetOutput());<br>
colorMap->SetLookupTable(planeWidget->GetLookupTable());<br>
<br>
vtkSmartPointer<vtkImageData> slice = colorMap->GetOutput();<br>
<br>
resample->Delete();<br>
colorMap->Delete();<br>
return slice;<br>
}<br>
<br>
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</blockquote></div><br>