Abstract: The computation burden of finding optimal threshold vector was very large for 2-D Otsu method,and the PSO algorithm can easily lead to local optimal issues,In order to solve these problems,a feature image segmentation was presented based on the CPSO algorithm and 2-D Otsu image segmentation method.CPSO algorithm was used to realize the rapid global optimization and search for the optimal threshold value of two-dimensional vector.Simulation results show that the proposed algorithm has good results to image which is similar to the core and a strong real-time processing capability.