An improved method of MRI segmentation based on level set

In traditional method of MRI segmentation based on level set, there is a question that the level set function deeds periodical re-initialization which will cost lots of times. In order to solve this problem, a simple internal energy is introduced in the energy function to eliminate the cost of periodical re-initialization. On the other hand, an external energy is introduced to get better robust in segmentation of noisy MRI. Proved by lots of experiments, the method proposed in this paper is efficient in solving the question of re-initialization with better robustness.