Image segmentation and boundary extraction are very important in the fields of image understanding
image analysis
pattern recognition and computer vision et al
while active contour model is one of the most important tools in the areas of image segmentation and boundary extraction which mainly includes parametric active contour model and geometric active contour model.Geometric active contour model has many advantages over parametric active contour model
such as computational simplicity and the ability to change curve topology during deformation
et al.Therefore
significant advances have been made in theories and applications of geometric active contour model recently.In order to show the general idea of this technique
a novel classified mode is developed to describe the parametric active contour model
geometric active contour model and the relationship between them at first in this paper.Moreover
by analyzing several classical active contour models
this paper summarizes the research
development and applications of active contour model.Finally
this paper points out future research orientations on the theories and applications research of active contour model.