In this paper

bionics is applied to non-photorealistic rendering(NPR).A NPR method based on ant colony algorithm(ACS) with equilibrium of distribution is proposed.In this method

rendering ant is defined as an agent with attributes of pheromone

mark

lifecycle and so on and with behaviors of single-walking

rendering marks

updating pheromone

jumping and dying.The algorithm can direct rendering ants to select the most optimal rendering trail and adjust their behaviors such as single-walking

rendering marks

jumping and dying by updating pheromone continually.The marks that all rendering ants lay on the trails are just the rendering result.Because rendering ants select trails purely according to the selected probability

the tracks will converge by degree-which will lead to local rendering.To avoid this phenomenon

information weight is brought in to dynamically adjust the equilibrium of selected probability.And this brings more natural rendering results.Experimental results show that this method can simulate the painting process effectively and can get pleasant rendering effects.