<br>Hi Yusuf,<br><br><br>You should start by separating the segmentation<br>problem from the visualization problem.<br><br><br>Please do the following:<br><br>0) Just after you call:<br><br> reader->SetFileNames( fileNames );<br>
reader->Update();<br><br> add<br><br> reader->GetOutput()->Print( std::cout );<br><br> then<br><br>1) Run the ITK segmentation pipeline until you <br> get the segmented image, and save it as a<br> MetaImage file (with extension .mhd)<br>
<br><br>2) Post the content of the resulting .mhd file <br> back to the list, as well as the print out of <br> the statement:<br><br> reader->GetOutput()->Print( std::cout );<br>
<br><br>3) Use Paraview (<a href="http://www.paraview.org">www.paraview.org</a>) to load the<br> resulting image and extracting an iso-surface.<br> Compare that iso-surface with the one that <br> you get by directly from the DICOM image.<br>
(and let us know what you find).<br><br><br>With the information from (2) we should be <br>able to identify if any geometrical information<br>is missing from the ITK processing pipeline.<br><br><br> Thanks<br><br><br>
Luis<br><br><br>------------------------------------------------------------------------<br><div class="gmail_quote">On Thu, Apr 15, 2010 at 5:54 PM, Yusuf OEZBEK <span dir="ltr"><<a href="mailto:nasil122002@yahoo.de">nasil122002@yahoo.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div style=""><div>
<p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US">Hello,</span></p>
<p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US">Can anyone help me please? I have a problem with to cut (cropping) a 3D
object, which I produced by the segmentation-method “watershed and region growing”.
In the beginning I read the DICOM images with itkImageSeriesReader, then I run watershed
or region growing algorithm, in order to connect itk with vtk and a 3D object
produce and for the displaying of segmentation, I use vtkContourFilter. After
segmentation of cropping the images I use vtkBoxClipDataSet,
vtkDataSetSurfaceFilter and vtkPolyDataMapper, but the result is a black
screen. <span> </span>When I read the images with
vtkDICOMImageReader and then segmented with volume rendering or marching cubes,
then it works completely well. The problem arises only for watershed and region
growing Algorithm. Where is my mistake in the code, what am I doing wrong?<span> </span></span></p>
<p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US">To understand my problem better, please see my screenshots on the
following link.</span></p><p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US"><br></span></p><p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US"><span><a href="http://www.wopsys.com/bilder/segmentation.html" target="_blank">http://www.wopsys.com/bilder/segmentation.html</a></span><br>
</span></p><p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US"><br></span></p>
<p class="MsoNormal" style="line-height: 150%;"><span lang="EN-US">Thank you.</span></p><br></div><div class="hm">
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