QuickWalk：一个大规模场景交互漫游系统  

QuickWalk:an Interactive Walkthrough System for Large-scale and Complex Scenes

作　　者：高宇[1] 邓宝松[2] 李苏军[2] 吴玲达[2] 

机构地区：[1]北京航天飞行控制中心,北京100094 [2]国防科技大学多媒体研发中心,湖南长沙410073

出　　处：《小型微型计算机系统》2008年第1期175-179,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60473117)资助

摘　　要：随着三维扫描与建模技术的飞速发展,三维场景的数据量急剧增大,无法一次性载入内存,而且难以进行交互绘制.研究开发了一个大规模外存场景的交互漫游系统Quick Walk,该系统集成了视点相关的层次细节技术、可见性剔除和场景数据的内外存调度,能够有效地减少运行时刻的内存需要,使CPU、GPU和I/O三者的效率得到充分发挥.实验表明,在保证场景绘制质量的前提下,该系统能够在目前普通的PC上实现大规模外存场景的实时显示和交互操纵.Recent advances in 3D scanning and modeling technologies have led to a rapid increase in the availability and size of 3D scene datasets, which can not be wholly loaded into the main memory and rendered at interactive rate. An interactive out-of- core walkthrough system for large-scale and complex scenes, named QuickWalk, is presented. The system combines view-dependent level of details, visibility culling ,and out-of-core techniques. The system can reduce the memory requirement at run time and balance the tradeoff between GPU, CPU and I/O overload. The experimental results show that the system can perform interactive out-of-core rendering of large-scale and complex scenes on commodity personal computes while keep the image quality.

关 键 词：大规模场景 交互漫游 分层层次细节模型 外存算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]