High Robust Tongue Image Segmentation Algorithm Based on Active Contour Model With Shape Priors

There always exits a problem with the tongue image segmentation that the robustness of the method decreases as the hardware is replaced or upgraded.In this paper, a novel tongue image segmentation method is proposed based on active contour model with shape priors.The statistical method is used to get a rough result, then the level set method with shape priors is used to get a mostly complete tongue, and the exact tongue is finally obtained using a post-processing step.Experimental results show that accurate segmentation can be obtained with the proposed method for different tongue image acquisition environments.