Abstract: Pulse coupled neural networks in image processing has important applications,but there are difficulties in choosing model parameters and image edges are too smooth problems.In this paper,the image bilinear interpolation operator is performed,and the anisotropic diffusion characteristics in images are used to determine the link weight parameter of the model.By using genetic algorithms to solve the model parameters and the attenuation of the link strength threshold parameter,the automatic image segmentation is successfully implemented.The simulation results show the image segmentation by the algorithm embodies more image contour and edge details,so the algorithm has good computing performance.