| 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. |
| 关键词: 网格简化 实时绘制 细节层次 虚拟现实 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(69823003；60083009) |
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| A Real-Time Rendering Algorithm Based on Hybrid Multiple Level-of- Detail Methods |
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ZHOU Kun,PAN Zhi geng,SHI Jiao ying
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| 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 |
| Key words: mesh simplification real-time renderi ng level of detail virtual reality |
