Pulse coupled neural network (PCNN) can be implemented on image processing effectively. But little researches are about theory analysis in present and the determination of parameters is on the stage of experience
which impedes the development of PCNN model. PCNN model is analysis in theory and the influence of parameters to PCNN is proved in this paper. Finally the rule of parameter determination in image processing is proposed. In ocular fundus image processing
the effect of automation parameter determination is similar to manual parameter determination and the result demonstrate its robustness.