基于Slicing的快速有限元网格体绘制算法

摘要

In accordance with the characteristics of irregular data field of 3D finite element model, a modified algorithm of direct volume rendering based on Incremental Slicing is proposed. The algorithm can deal with multiple types of finite elements. The hardware accelerated RGBA polygon rendering is used for hybrid rendering of both the volume data and geometric surfaces, and compensated treatment is introduced for important small elements. Both the efficiency and image quality of finite element model rendering have been improved noticeably.%在Incremental Slicing算法的基础上，针对有限元网格的特点，提出了一种适合于多种有限元单元类型的快速体绘制方法.由于采用硬件加速的多边形RGBA填充方法混合显示数据场与几何体的外表面，优化了切面多边形的形成算法，并对于小单元进行了特殊处理，大大提高了有限元网格体绘制的速度与质量.