[Insight-users] applying the gradientAnisotropicDiffusion filter on voxels with different spacings

[Bradley Lowekamp]

Hello iamrndm b,

Both the itk::AnisotropicDiffusionImageFilter and the itk::CurvatureAnisotropicDiffusionImageFilter support anisotropic pixels in the underlying differential equation and the derivatives. So if you itk::Image has the correct Spacing set, the results may be acceptable. I have used both these algorithms with confocal microscopy and was happy with the results, how ever I don't recall the ratio of the voxel at the moment.

Brad

On Jul 4, 2011, at 4:25 PM, iamrndm b wrote:

> hi all , 
> I am dealing with confocal data and the XY resolution of the images is far better than Z direction.
> I am applying the gradientbased anisotropic filter to smooth my image before applying Otsu or other filters
> My question is , how effective  are these filters on data where the voxels have different spacing or does ITK recommend we first use the makeVolumeIsotropic filter.
> Thanks
> 
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========================================================
Bradley Lowekamp  
Lockheed Martin Contractor for
Office of High Performance Computing and Communications
National Library of Medicine 
blowekamp at mail.nih.gov

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