本文提出一种基于凸包的齿痕点的快速定位方法。在详细讨论了如何将图形学中 的经典凸包算法应用于数字化中医舌诊的齿痕定位中后,通过相关舌图做实验,证明了该方法在快速齿痕点特征提取中的可行性、有效性和准确性。 关键词: 凸包;齿痕;Graham算法;舌诊 Abstract: This paper provides a method of Tooth-Marked rapid locating base on Convex Hulls. It is discussed in detail how the convex hull traditional arithmetic of computer graphics be use in the Tooth-Marked rapid locating in digital Chinese Medicine Tongues diagnosis. Then the feasibility, efficiency and veracity of the method were verified by relevant experimental of digital tongue images. Key Word: Convex Hulls; Tooth-Marked ;Graham algorithm;Tongue Diagnosis