Self-adaptive dental arch region generation method based on oral cavity CBCT (cone beam computed tomography)

The invention provides a self-adaptive dental arch region generation method based on oral cavity CBCT (cone beam computed tomography). The self-adaptive dental arch region generation method comprises the following steps: acquiring a CBCT image from oral cavity cone beam CT equipment, obtaining segmentation thresholds of bones and enamel by a self-adaptive method, positioning a lower cavity dental crown plane by the self-adaptive method, generating a maximum density projection drawing, generating a binary image and generating a dental arch region. The method can be adaptive to scanning images of different CT devices, abnormal extreme values with large deviation in the CT images are processed, the method has high universality and fault tolerance, and meanwhile, corresponding dental arch areas can be accurately generated according to different conditions that whether teeth in the upper cavity and the lower cavity are occluded or not and whether teeth are missed or not. 本发明提出一种基于口腔CBCT的自适应牙弓区域生成方法，包括从口腔锥形束CT设备获取C