A higher-order active contour model of a `gas of circles' and its application to tree crown extraction

Péter Horváth Ian Jermyn Zoltan Kato Josiane Zerubia A higher-order active contour model of a `gas of circles' and its application to tree crown extraction http://arxiv.org/abs/cs/0611115 2006 CoRR abs/cs/0611115 db/journals/corr/corr0611.html#abs-cs-0611115 informal publication