Semi-automatic segmentation by active contours.
Download and copy absnake_.jar into you plugins directory
The source is available as a jar file below absnake-src (unzip it) or on GitHub.
New options were added by Feel Contraire in absnake2 :
The plugin was applied to segmentation and quantification of visceral, subcutaneaous and total abdominal adipose tissue, acquired with magnetic resonance imaging. See the AATAP plugin.
P. Andrey, T. Boudier, Adaptive Active Contours, ImageJ Conference 2006 (absnake.pdf)
T. Boudier, Elaboration d'un modèle de déformation pour la détection de contours aux formes complexes, Innov. Techn. Biol. Med., Vol 18, n°1, 1997.