基于AOS格式的水平集快速分割模型

针对C-V图像分割模型提出了一种快速分割模型。首先引入一种新的内部能量函数,即以水平集函数与距离函数的偏差作为能量函数,无需重初始化水平集函数,且初始水平集函数可以用一般的分段函数来定义,节省了初始化和重初始化过程所消耗的时间。其次计算格式采用AOS格式,该差分格式无条件稳定。实验结果表明了该分割模型的有效性。

Fast Image Segmentation Model Based on AOS Scheme

In this paper,we present a fast segementation model for C-V model.First,a new internal energy is introduced that forces the level set function to be close to a signed distance function,therefore not only the re-initialization procedure is completely eliminated,but also the level set function can be initialized with general functions.Second,we provide a fast algorithm using the semi-implicit additive operator splitting(AOS) scheme,which is unconditionally stable.The experimental results show that our model is very effective for image segmentation.