[Insight-users] Vessel seg Hessian3DToVesselnessMeasureImageFilter Question

[C.Cagatay Bilgin]

Hi Gen-Nan,
Hessian3DToVesselnessMeasureImageFilter does not
`detect' the vessels but it `enhances' them.

Have a look at the original paper by Frangi et al
http://www.tecn.upf.es/~afrangi/articles/miccai1998.pdf

Cagatay Bilgin

On Feb 21, 2009, at 7:40 PM, Gen-Nan Chen wrote:

>  Hi! All,
>
> I tried to use Hessian3DToVesselnessMeasureImageFilter to segment  
> vessel tree in the lung. I have a few questions here
>
> 1. The output Image of Hessian3DToVesselnessMeasureImageFilter is  
> not a binary image as I thought. Can anyone tell me what those voxel  
> value mean? Do I need to
> \
> 2. HessianRecursiveGaussianImageFilter's sigma. Anyone know what  
> does this sigma value mean and for? Looks like I can get a biggger  
> vessel by using a bigger sigma?
>
> 3. For thin tube like those vessels in the lung, what's the  
> recommendation value for alph1 and alph2?
>
> -- 
> Gen-Nan Chen,
> email: gnchen at gmail.com
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