[Insight-users] problem with AntiAliasBinaryImageFilter

[maillist_xx at sina.com]

 hi,all    I got a problem when I try to use itk::AntiAliasBinaryImageFilter to process the 3D image and VtkMarchingCubes to visualise it, but the output of filter is nothing.I have no idea why the size of output is 0,here is part of my code:
&nbsp;&nbsp;typedef float IoPixelType;&nbsp;&nbsp;typedef itk::Image< IoPixelType, 3 > IoImageType_3D;&nbsp;&nbsp;typedef itk::AntiAliasBinaryImageFilter<IoImageType_3D,IoImageType_3D> AntiAliasFilterType;&nbsp;&nbsp;&nbsp;AntiAliasFilterType::Pointer antialias = AntiAliasFilterType::New();&nbsp;&nbsp; antialias->SetInput(inputimage);&nbsp;&nbsp; &nbsp;printf("Smoothing\n");&nbsp;&nbsp; &nbsp;antialias->SetMaximumRMSError(0.01);&nbsp;&nbsp; &nbsp;antialias->SetNumberOfIterations(50);&nbsp;&nbsp; &nbsp;antialias->SetNumberOfLayers( 2 );&nbsp;&nbsp; DistanceField_s = &nbsp;antialias->GetOutput();
&nbsp;any advice will be appreciated.
XuXing
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