人工牙三维重建算法

A algorithm for 3D reconstruction of artificial teeth

目的 :建立三维人工牙模型 ,形成标准化的图形库。方法 :利用CGI自动切层扫描仪 ,对人工牙进行平行切割 ,每一层提取牙轮廓线上若干数据点 ,利用三维重建技术建立人工牙三维图形。结果 :建立了 2 8颗人工牙的三维图形库。结论 :人工牙三维图形库的建立对涉及人工牙的计算机辅助设计。

Objective: To reconstruct three dimension (3D) model of a rtificial tooth and to establish standardized 3D artificial teeth graphic datab ase. Methods: Artificial teeth were incised with CGI autom atic cross section scanning instrument, then data points were picked up from e ach parallel layer contour of incised tooth, and 3D stereo models of artificia l tooth were retrieved using 3D reconstruction techniques. Results: 3D graphic models of 28 artificial teeth were established.The models may represent the graphic feature of the teeth. Conclusion: The present technic is feasible in the establishment of 3D graphic models of artificial tooth.