异质材料CAD模型可视化算法

Heterogeneous CAD Model Visualization Method

针对基于体素的异质材料建模方法中离散数据集不能连续显示的问题,基于体绘制的Ray-casting算法提出了一种适于异质材料体数据可视化的数据流程和方法。为了加速体绘制进程,提出了基于最小投影窗口的加速方法和基于视线方程参数测试的加速方法。实验结果表明,算法对异质材料体数据集能产生半透明和连续显示的效果,提高异质材料CAD建模的灵活性。

Though the volumetric based HO modeling method has lots of advantages,the discrete property of the dataset determines the discontinuous when rendering.Based on Ray-casting method in scientific visualization,a volumetric rendering algorithm was proposed to visualize the heterogeneous objects.For acceleration,a minimal projection window and parameter testing of the projection ray equation were utilized to speed up the algorithm.The experimental results show that the proposed method can generate semi-transparent and continuous effects,which can improve the flexibility of 3D CAD modeling for heterogeneous objects.