Active contour methods are model based approaches for image segmentation and were developed in the late 1980s.There are two main categories of these methods:energy based methods and geometric methods.Geometric method are intrinsic models.Because of its completeness in mathematics,geometric active contour model overcomes many difficulties of the energy bases active contour model.However,in medical images with heavy structural noise,the evolution of the geometric active contour will be seriously affected. ...
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