[Insight-users] confirmation of isotropic spacing requirement for levelset filters in ITK

[Karthik Krishnan]

The level set filter evolves a PDE over time. The PDE solver framework does
not take spacing into account.
The few ones that do have a UseImageSpacing ivar. I would recommend using
the ResampleImageFilter to resample your image to isotropic spacing prior to
using any of the level set filters.

-- 
Karthik Krishnan
R&D Engineer,
Kitware Inc.
Ph: 518 371 3971 x119
Fax: 518 371 3971

On 12/10/07, Charl Botha <c.p.botha at tudelft.nl> wrote:
>
> Dear all,
>
> In
> http://www.itk.org/Doxygen/html/classitk_1_1SegmentationLevelSetImageFilter.html
> under "A NOTE ON DATA SPACING" it says "Input data with anisotropic
> spacing should be resampled to isotropic voxels for use in this
> filter".
>
> Is this still the case for all filters derived from the
> itkSegmentationLevelSetImageFilter?
>
> Thanks,
> Charl
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>
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