[Insight-users] Problem with GeodesicActiveContourShapePriorLevelSetImageFilter

[orientation f]

Hello,
I use GeodesicActiveContourShapePriorLevelSet filter to segment  heart CT
image.
But I don't know how to set the following two parameters:(the example in vtk
user's guide)
ReadType::Pointer meanShapeReader=ReaderType::New();
meanShapeReader->SetFileName(parameter1);//parameter 1
itk::NumericSeriesFileNames::Pointer
Creator=itk::NumericSeriesFileNames::New();
Creator->SetSeriesFormat(parameter2);//parameter 2

Maybe parameter 1 is the directory of shape model file(*.mha). For a new
image, how to create *.mha file?
thank you very much!
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