Recent researches indicate that pulse coupled neural network (PCNN) can be implemented on image segmentation effectively.However

it is necessary to determine the near optimal parameters of the network to achieve satisfactory segmentation results for different images.Up to now

the parameters are always adjusted manually and there is no method of adaptive parameter determination

which impedes its application in automatic image segmentation.To solve the problem

this paper brings forward an adaptive segmentation method based on a simplified PCNN with the parameters determined by images' spatial and grey characteristics automatically.Segmentations on various images are implemented with the proposed method and the experimental results demonstrate its validity and robustness.