矿山井下场景的实时渲染算法  

Real-time Rendering Method for Underground Mine Scenes

作　　者：李大锦[1] 白成杰[2] 姜华 

机构地区：[1]山东师范大学传媒学院数字媒体系,济南250014 [2]山东师范大学物理与电子科学学院,济南250014 [3]新泰市煤炭工业管理局,新泰271200

出　　处：《系统仿真学报》2013年第10期2460-2463,共4页Journal of System Simulation

基　　金：山东省自然科学基金(ZR2012FM029)

摘　　要：在虚拟数字化矿山中,由于井下涉及大量的巷道和机械设备,模型数据量巨大,因此严重制约了渲染速度。针对该问题,提出了一种井下虚拟场景的实时渲染算法。该算法将每个巷道作为一个区域,利用巷道的长方形包围盒进行相机的包围检测来确定相机位置,从而确定可见的巷道区域,在渲染时排除不可见的巷道。同时,为减少包围检测的计算,利用八叉树分割场景来缩小检测范围。实验结果显示该算法可大幅度减少渲染对象,渲染速度明显优于传统的图形加速算法。Digital virtual mine system involves a mass of roadways and mechanical equipments. The huge amount of model data will seriously reduce rendering speed. A real-time rendering algorithm for virtual scenes of underground mine was proposed. Each roadway was looked on as a region, and rectangular bounding boxes of roadways were used to test the camera inside or outside roadway, so as to determine the visible regions. The invisible roadway regions would be discarded in the rendering. In order to reduce the calculation of inside-outside testing, Octree was used to narrow the scope of testing. The experimental results show that the algorithm can significantly reduce rendering objects, and rendering speed is much faster than traditional algorithms of rendering acceleration.

关 键 词：虚拟矿山 实时渲染 图形加速算法 八叉树 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]