摘要
给出基于OpenSceneGraph场景模型的信息提取方法,利用八叉树对场景模型进行分割和视锥体剔除,有效提高了实时绘制的效率,尤其是对浏览场景细节时的绘制效率提高最为明显。采用基于分页技术的Pagelod方法,实现模型的动态调度,以减少I/O的负载,满足在有限硬件条件下虚拟场景中复杂产品模型的实时绘制要求。
In order to improve the efficiency of real-time rendering,a method to extract the model information of OpenSceneGraph using scene model dividing up and view frustum culling based on Octree is proposed.This method has a better performance when visualizing the detail scene of virtual environment.Pagelod,which is based on DatabasePager,is also applied to implement the dynamic data translation,reduce the I/O overload greatly and satisfy real-time requirement for complex product model in virtual environment under limited hardware resources.
出处
《工程图学学报》
CSCD
北大核心
2011年第3期69-74,共6页
Journal of Engineering Graphics
基金
虚拟现实技术与系统国家重点实验室探索性自选课题资助项目(200806123)
关键词
虚拟场景
实时绘制
复杂产品模型
八叉树
virtual environment
real-time rendering
complex product model
octree
