"Comp"acity calculation in 3D ROI Manager

[Ogg, Robert]

Can same tell or point me to the formula used to calculate compacity as reported in the 3D ROI manager?

Thanks! Rob

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[Thomas Boudier]

Hi,

The compactness is basically the normalized ratio between volume and
surface

C = V2/S3 (Volume exp 2, Surface exp 3)

The problem in images is how to compute surfaces, only the number or
border voxels, visible faces, ... ? The value should be between 0 and 1,
1 for a perfect sphere. I am currently working on that, I may update
explanation soon on the wiki site.

Best,

Thomas

Le 17/06/2014 18:36, Ogg, Robert a écrit :

> Can same tell or point me to the formula used to calculate compacity as reported in the 3D ROI manager?
>
> Thanks! Rob
>
> ________________________________
> Email Disclaimer: www.stjude.org/emaildisclaimer
> Consultation Disclaimer: www.stjude.org/consultationdisclaimer
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