[Insight-users] anisotropic diffusion

[Bruno Arbter]

Hi,

I started using nonlinear diffusion filters in 3D. As far as I understood,
the classic Perona-Malik implementation
(itkGradientNDAnisotropicDiffusionFunction) uses a scalar value for the
conductance and is strictly speaking isotropic. Further I found the
level-set-based initkCurvatureNDAnisotropicDiffusionFunction. 

But are there any anisotropic (edge-enhancing) diffusion filters that are
able to stop diffusion perpendicular to edges but allows diffusion parallel
to edges?

In itkAnisotropicDiffusionFunction.h I found the hint that "several
variations on the scheme [...] are implemented in Itk"...

Thanks,
Bruno