Journal of Software:2001.12(1):74-82

(浙江大学 CAD&CG国家重点实验室,浙江 杭州 310027)
A Real-Time Rendering Algorithm Based on Hybrid Multiple Level-of- Detail Methods
ZHOU Kun,PAN Zhi geng,SHI Jiao ying
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Received:April 12, 1999    Revised:October 25, 1999
> 中文摘要: 细节层次是实时图形生成的一项重要技术.提出一种把视点无关和视点相关两类多细节层次技术结合起来的网格模型实时绘制算法.该算法首先根据应用领域的不同要求或用户给出的误差范围,对模型进行与视点无关的预处理简化,然后把简化后得到的模型用在与视点相关的实时简化算法中.实验表明,这种网格模型简化和绘制算法能在损失很小的屏幕像素误差的前提下大大提高绘制速度.
Abstract:Level of Detail (LoD) is a key technique for real-time rendering. A new real-t ime rendering algorithm incorporating view-independent algorithms and view-dep endent algorithms is presented in this paper. Firstly, a polygonal mesh model is symplified view-independently according to the different requirements of appli cations or the user-specified error. Then the simplified model is used in a vie w-dependent real-time rendering algorithm. Examples illustrate that the propos ed mesh simplification algorithm and rendering algorithm can accelerate the rend ering speed greatly, while the rendering error (evaluated by pixel) is very small
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基金项目:国家自然科学基金资助项目(69823003;60083009) 国家自然科学基金资助项目(69823003;60083009)
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ZHOU Kun,PAN Zhi geng,SHI Jiao ying.A Real-Time Rendering Algorithm Based on Hybrid Multiple Level-of- Detail Methods.Journal of Software,2001,12(1):74-82