- 期刊
電腦輔助立體齒列重建系統的開發
Development of Computer-Aided 3-D Dentition Reconstruction System
摘要
本研究希望能建立3D齒列模型以供在齒顎矯正或任何需要立體齒列模型來進行診斷評估的科别來制定更真實、準確的治療計劃。目前立體的影像資料可用三維資料擷取設備來取得，例如電腦斷層掃描(CT)、核磁共振影像(MRI)或3-D雷射掃描器等等。而陰影造形法(Shape from Shading)是用來得到物體三維資料的另一種方法。由於CT、MRI及3-D雷射掃描器成本昂貴又有安全顧慮且正常牙科臨床診斷或治療並不會使用的這些影像，因此，本研究將使用陰影造形法及方格最近點法/基因演算法(GCP/GA)的技術來重建完整齒列的立體模型。首先，經由數位相機分别取得石膏牙模的正、側、俯視圖，再使用陰影造形法來重建，最後使用對位(GCP/GA)方法將不同視野重建的立體資料整合成一個完整的齒列模型。並提供友善的圖形使用者介面(GUI)，除了電腦自動重建3D齒列外，也能讓醫師由不同角度觀看齒列。
並列摘要
The 3-D dental model had been reconstructed to establish the more real and accurate treatment planning for orthodontics, or 3-D dental required evaluation in this research. Currently, the 3-D data can obtained from CT, MRI, 3-D laser scanner, and shape from shading technique etc. Because reconstructing the 3-D model from CT, MRI, or 3-D laser scanner maybe impractical in routine clinical procedure. Therefore this research used the shape from shading and grid closest point/genetic algorithm GCP/GA)to reconstruct the complete 3-D dental model. Firstly, the lateral and frontal views of cast are obtained by digital camera. Then the 3-D dental model is reconstructed using shape from shading technique. Finally, the multiple segment 3-D data are registered by GCP/GA method to obtain the complete 3-D dental model and the proposed system provides the friendly graphic user inter face to observe the different views of 3-D dental model.