The region partition of quality and coating for tongue image based on color image segmentation method

The recognition of tongue image is one of the essential contents for automatic diagnosis of tongue information. The identification of tongue quality and coating is an important procedure in the tongue diagnosis, and it is also the premise for analyzing the color of tongue quality and coating and its texture characteristics in the later stage. This paper employs "division-merging method" and "chrominance-threshold method" to distinguish the tongue quality and coating on the basis of color image segmentation method. The results show that the two methods work well in the area partition of the quality and coating of tongue images.