Interactive Tooth Segmentation Method of Dental Model based on Geodesic

Abstract

Abstract. This paper proposed an interactive tooth segmentation method based on Geodesic which aims to solve the inaccurate problem of segmentation in dental model for irregular teeth case. The features of the teeth are automatically acquired according to the prior knowledge. Then based on those features, the boundary of each tooth is obtained by the improved regional growth method and corrected by combining the correction points from the user inputting based on the shortest geodesic path, so that, the teeth are precisely segmented according to the boundary. The experimental results show that our method can be used to segment different kinds of teeth correctly and the computational speed and the precision of segmentation are improved obviously. Furthermore, as the features and the initial boundaries can be acquired automatically, the complexity of the implementation is significantly reduced.