一种复杂产品虚拟装配动态模型可见性计算方法  

Visibility Culling for Dynamic Models of Virtual Assembly for Complex products

作　　者：周韶泽[1] 兆文忠[1] 马思群[1] 张军[1] 

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2011年第2期12-15,共4页Journal of Dalian Jiaotong University

基　　金：铁道部科技研究开发计划资助项目(2008J012-C);辽宁省教育厅高等学科研计划资助项目(2009T011)

摘　　要：针对复杂产品模型较大、小型零部件多的特点,提出一种动态装配对象可见性计算方法.该算法将装配结构树表达为层次包围盒场景图,在实时绘制时结合视锥剔除和细节剔除,采用改进的快速查询策略实现虚拟装配对象的可见性判断和剔除.实验结果表明,该方法能高效地剔除动态装配对象中的细小像素个体,使虚拟装配复杂动态场景的实时绘制效率得到明显提高.An efficient visibility culling method was presented for dynamic models of complex products in virtual assembly.By this method,the product assembly tree was represented using a BVH scene graph.During the rendering stage,a strategy was proposed in order to improve occlusion query efficiency.Combining with VFC and detail-culling,the visibility culling method for virtual assembly was realized.Experiments show that the method can efficiently cull small-pixels parts of dynamic models in virtual assembly,thus greatly accelerate the visibility calculation process.

关 键 词：虚拟装配 可见性剔除 装配仿真 渲染优化 遮挡查询 细节剔除 

分 类 号：TH163[机械工程—机械制造及自动化] TP391.7[自动化与计算机技术—计算机应用技术]