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Hi,<br>I have 3D microCT images that I'm trying to segment. I'm trying to use the Application in ITK:<br><a href="http://www.itk.org/ITK/applications/GeodesicActiveContour.html">Geodesic Active Contour Segmentation </a><br><br><a href="http://www.itk.org/ITK/applications/ShapeDetectionLevelSet.html">Shape Detection Level Set Segmentation</a> <br><br><a href="http://www.itk.org/ITK/applications/FastMarchingLevelSet.html">Fast Marching Level Set Segmentation</a> <br><br><a href="http://www.itk.org/ITK/applications/RegionGrowingSegmentation.html">Region Growing Segmentation</a> <br><br>Alfter building the application Geodesic Active Contour Segmentation, I ran the GUI and was able to load the image. However, I don't know what values to set for the Sigma of the Gradient Magnitude, the alpha and beta for the linear+Sigmoid, and the time threshold for the Fast Marching. The default values in the GUI are as follows:<br>sigma=1.2<br>alpha=-1.0<br>beta=5.0<br>Time threshold=5.0<br><br>I don't know if these values are appropriate for a 3D (short) image type. I get this error and I'm not sure why:<br><br>shoosh@shoosh-laptop:~/InsightApplications-bin/GeodesicActiveContour$ ./GeodesicActiveContour <br>terminate called after throwing an instance of 'itk::ExceptionObject'<br> what(): /home/shoosh/InsightToolkit-3.10.2/Code/Common/itkImportImageContainer.txx:194:<br>Failed to allocate memory for image.<br>Aborted<br><br>Any help would be greatly appreciated. Thanks<br><br /><hr />What can you do with the new Windows Live? <a href='http://www.microsoft.com/windows/windowslive/default.aspx' target='_new'>Find out</a></body>
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