A Modified Stop Criterion in Level Set Method
Xiaoping Zhu · Journal of Astronautics · 2007
A modified speed stop item in level set method was proposed in order to solve the problem of the traditional level set that can only deal with the image with additive noise.In order to make the evolving front insensitive to the multiplicative noise,a new speed stop item based on adaptive filter is presented.And the proposed adaptive filter is used to obtain a local contrast image that is a parameter of speed stop item.Then a new method that evaluates the variance of homogeneous area is proposed.Last using the decreasing function of the local contrast image as the stop item evolves the level set function then gets the final segmentation result.The experimental results showed that the developed algorithm could segment the image well while suppressing the multiplicative noise.