摘要
运用细节层次技术是提高三维数字城市系统中复杂场景绘制效率的有效方法之一,在基于HOOPS开发的数字城市系统中,针对上空俯瞰的漫游方式实现了模型整体切换。根据模型的重要程度不同实现了基于特征的多分辨率自动简化。以在不同计算机上流畅漫游为目的设计了固定帧频调度过程,以满足数字城市系统中不同情况下的漫游需要。
LOD is an effective method to improve the efficiency of displaying the large scale scene in digital city. The digital city system developed with HOOPS realizes the exchanging the whole models for bird＇s-eye viewing, automated switching the LOD level to highlight detailed features of different important models and controlling the constant frame rate of rendering easily and smoothly for purpose of walk-through.
出处
《工程图学学报》
CSCD
北大核心
2008年第2期71-76,共6页
Journal of Engineering Graphics
基金
上海市科学技术委员会科研计划资助项目(052912065)
关键词
计算机应用
数字城市
细节层次
多分辨率
computer application
digital city
levels of detail
multi-resolution
