[Insight-users] Metric insight analysis

[Xabier Artaechevarria Artieda]

Dear Jim,

If the input images are 3D, which if I understand right is your case, ITK
will operate directly on them.

Then, the answers to your questions would be:
1. In 3D, no interpolation.
2. In voxels.

Regards,
Xabier

-- 
Xabier Artaechevarria
Cancer Imaging Laboratory
Centre for Applied Medical Research
www.cima.es



abatzis at ceid.upatras.gr ha escrito:

>
>
>
>   Dear Luis and itk collegues,
>
> i've used two itk algorithms so as to perform 3d segmentation of carotids
> and so as to assess the results obtained, i used kappa statistic, match
> cardinality and hausdorff distance metrics. The ground-truth standard i
> used so as to compare my results, on the basis of the aforementioned
> metrics is a manual delineation of the datasets provided, by use of the
> itk-snap tool. What i'd like to be explained of is how these metrics work,
> that is how  the comparison is performed. Do these metrics operate on 2d
> space by comparing the automated and manual results slice by slice and
> then providing an average of the 2d results or some kind of interpolation
> is performed to the manual segmentation and the comparison is performed on
> the 3d space? Furthermore the unit results of the hausdorff metric is in
> pixels or voxels?
>
> Thanks in advance
>  Jim Abatzis
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>



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