[Insight-users] How to compute the Hessian?

[Karthik Krishnan]

If you look at the source for Curves3DExtraction, you will find that it uses
the itk::HessianRecursiveGaussianImageFilter and the
itk::HessianToLaplacianFunction. The application allows you to play around
in eigen space to extract structures from DSA, lung CT scans etc. The
motivation being that you can discern tubular, plate like and spherical
structures from the relationship that the eigen values of the hessian have.
See notes on
http://public.kitware.com/Insight/Doxygen/html/classitk_1_1Hessian3DToVesselnessMeasureImageFilter.html

Once you can find a culling frustum using Curves3DExtractor to extract
structures in your image, I'd suggest you take a look at the Frangi filter
(from InsightJournal) and Sato (itk::Hessian3DToVesselnessMeasureImageFilter
int ITK) to do a better job of extraction.

HTH
--
karthik

On 1/10/08, rashedk <rashed.vtk at googlemail.com> wrote:
>
>
> Hi there,
>
> I am interested in finding ridges in intensity (for vessel detection). In
> order to do this I need to compute the Hessian. I couldn't a function or
> filter in ITK which computes the Hessian (although Curves3DExtraction
> somehow does it). Is there any?
>
> Thanks in advance,
>
> Rashed.
>
>
> --
> View this message in context:
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> Sent from the ITK - Users mailing list archive at Nabble.com.
>
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