Hi Michal,<br><br><br>Here are some of the key steps that you may want to try:<br><br>1) Save our Speed image to a file and look at it with an decent Viewer<br> (e.g. the ImageViewer from InsightApplications).<br> <br>
The image should *ALMOST* look like a segmentation of the structure<br> you are trying to get. The object should be almost set to 1.0, its edges<br> should be almost set to 0.0<br><br> For examples on how the Speed image should look like,
<br> please look at the ITK Software Guide<br><br> <a href="http://www.itk.org/ItkSoftwareGuide.pdf">http://www.itk.org/ItkSoftwareGuide.pdf</a><br> <br> in particular to the Level Sets section.<br><br><br>2) Verify that the seed points that you are providing are indeed inside
<br> the 1.0 region, inside of the object that you want to extract.<br><br><br>3) Also pay attention the pixel type that you are using for storing the output<br> (that you see to be zeros) and the file format that you are using for that
<br> output (is that also a MetaImage ?)<br><br><br> Please let us know what you find,<br><br><br> Thanks<br><br><br> Luis<br> <br><br>----------------------<br><div><span class="gmail_quote">On 7/25/07,
<b class="gmail_sendername">Michal Plotkowiak</b> <<a href="mailto:michal.plotkowiak@bnc.ox.ac.uk">michal.plotkowiak@bnc.ox.ac.uk</a>> wrote:</span><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've just started working with ITK few days ago. I'm trying to segment 3d mri data<br>(in mha format)using the Fast Marching Segmentation but I'm getting zeros as a<br>final result. I tried different parameters but didnt succeed. The filters
<br>parameters are alright as I get outputs 1-3. I run the program for 2d mri slice<br>(taken from my 3d data as a png) and it was fine. Could someone please help me?<br><br>many thanks<br>michal<br><br>_______________________________________________
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