关键词: 全局优化搜索，图像分割，模糊聚类，模糊C-均值算法，硬C-均值算法

Abstract: In the cluster-based image segmentation algorithm,the initialization was needed in FCM(fuzzy C-means) algorithm and there were lots of local minimum in the objective function,if the initialization abtained the local minimum vicinity point, it would cause a convergence to local minimum. In order to solve this problem, a global optimization search algorithm was introduced to the FCM algorithm because it has the global optimization search capabilities. The improved FCM has more effective than the traditional method of FCM clustering algorithm through the simulation experiments and theoretical analysis of algorithm performance.

Key words: Global optimization search, Image segmentation, Fuzzy clustering, Fuzzy C-means algorithm, Hard C-means algorithm