摘要
为对包含日光温室的农业场景进行实时、逼真的绘制,采用基于视点的连续细节层次(LOD)来减少实际需要绘制的网格数据量,并基于包围盒技术实现了视点的碰撞检测,同时使用可见性剔除算法来加速场景渲染速度。在渲染温室内植物时,通过几何变换实现了大规模植物群体的快速构建,并在场景中使用阴影体算法来渲染阴影,生成了具有真实感的大规模温室农业场景。模拟结果表明该方法能有效地减少渲染的面元数目,大大提高了绘制速率,场景有较高的真实感,能够满足交互式实时漫游的要求。
A method for real-time and realistic rendering virtual agricultural scenes that include group of solar greenhouse was proposed in this paper.This method used view-dependent continuous LOD models to reduce the amount of polygons needed to be rendered actually,and a collision detection algorithm was implemented based on bounding box.The rendering speed of the scene was improved by using visibility culling techniques.In the constructed virtual agricultural scenes,large-scale plants stands were created rapidly ...
出处
《计算机应用》
CSCD
北大核心
2009年第3期888-891,共4页
journal of Computer Applications
基金
北京市自然科学基金资助项目(4081001)
国家科技支撑项目(2006BAD10A07)
国家863计划项目(2007AA10Z224)
关键词
虚拟温室
可见性
细节层次
包围盒
阴影
漫游
virtual greenhouse
visibility
Level Of Detail（LOD）
bounding box
shadow
walkthrough
