Gradient flows and geometric active contour models
Abstract
In this paper, we analyze the geometric active contour models
discussed previously from a curve evolution point of view and
propose some modifications based on gradient flows relative to
certain new feature-based Riemannian metrics. This leads to a
novel snake paradigm in which the feature of interest may be
considered to lie at the bottom of a potential well. Thus the
snake is attracted very naturally and efficiently to the desired
feature. Moreover, we consider some 3-D active surface models
based on these ideas.