Abstract: In view of the traditional social force model, it is difficult to deal with the problems of single pedestrian trajectory and loose crowd in the process of crowd evacuation, and an improved social force model is proposed. Based on the original social force model, the movement trajectory of the person is changed by considering the choice of the movement direction The intensity of panic and attraction in the process of pedestrian evacuation is considered to reproduce the self-organizing behavior in the process of pedestrian evacuation, and the simulations are performed in individual and group mode. The authenticity of the population model is verified by the self-organizing population morphology in the real video. The experimental results show that the improved pedestrian model can simulate the trajectory of pedestrians more realistically and reasonably.

Key words: social force model, panic emotion, the direction of movement, group mode