圆明亮琢型钻石的计算机自动三维解析模型构建方法研究

采用转台图像采集的方法,通过对样品截面影像的边缘提取、参数空间转换、直线识别等操作,测定了圆明亮琢型样品的三维结点。采用多元链表数据结构组织圆明亮琢型样品的点、线、面等几何要素,并构建它们之间的拓扑关系。结合所测三维结点与拓扑模型,表示出圆明亮琢型钻石的三维实体模型。该方法具有图像采集方便、硬件体统简洁、计算速度快等优点,非常适于刻面宝石的三维重建,并可应用于钻石/宝石的切工评价、光学效果的模拟以及加工设计等方面。

Research on Auto-Building 3-D Analytic Model about Round-Brilliant-Cut Diamond with Computer

3-D vertexes of the round-brilliant-cut diamond are measured and calculated by the edge extraction,parameter space translation,line recognition and so on,according to the turntable image capture device.The geometric elements（such as the points,lines and surfaces） of the sample and their topology are connected by the multiple list data structure.The 3-D model about the round-brilliant-cut diamond is displayed by the vertexes and its topology.This method is very much fitted for the 3-D reconstruction of the faceted gems,as it can collect the images easily and calculate the data faster by computer.Furthermore,it could be applied to the cut evaluation,the optical effect simulation and the cut design of diamond/gems.