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| 超量外存地表模型的实时绘制技术 | |
| 引用本文： | 吴金钟,刘学慧,吴恩华.超量外存地表模型的实时绘制技术[J].计算机辅助设计与图形学学报,2005,17(10):2196-2202. |
| 作者姓名： | 吴金钟 刘学慧 吴恩华 |
| 作者单位： | 1. 中国科学院软件研究所计算机科学重点实验室,北京,100080;中国科学院研究生院,北京,100039 2. 中国科学院软件研究所计算机科学重点实验室,北京,100080 3. 中国科学院软件研究所计算机科学重点实验室,北京,100080;澳门大学科学技术学院计算机与信息科学系,澳门 |
| 基金项目： | 国家自然科学基金（60103011,60173022）;国家重点基础研究发展规划项目（2002CB312102） |
| 摘 要： | 提出一种分块策略对规则网格进行区域分割，采用空间填充曲线对分块内网格点进行多分辨率排列，并基于分块多分辨率对地形网格实时调度和页面预取．文中算法利用块模型进行分块视域剔除和分块LOD场景渲染．在多线程分块多分辨率调度和渲染策略下，大大减少了模型的I／O负载，可以在有限环境下满足实时场景绘制要求． |
| 关 键 词： | 地形绘制 细节层次 超量模型 多分辨率 三角带 |
| 收稿时间： | 2004-07-16 |
| 修稿时间： | 2004-07-162004-11-04 |
Real-Time Rendering for Out-of-Core Terrain Model |
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| Wu Jinzhong,Liu Xuehui,Wu Enhua.Real-Time Rendering for Out-of-Core Terrain Model[J].Journal of Computer-Aided Design & Computer Graphics,2005,17(10):2196-2202. | |
| Authors: | Wu Jinzhong Liu Xuehui Wu Enhua |
| Affiliation: | 1 Laboratory of Computer Science , Institute of Software , Chinese Academy of Sciences , Beijing 100080; 2 Graduate University of Chinese Academy of Sciences, Beijing 100039; 3 Department of Computer and Information Science, Faculty of Science and Technology, University of Macau , Macao |
| Abstract: | We propose an algorithm to partition the whole model into equal-size blocks and arrange the blocks with space filling curves in multi-resolution form. In real-time rendering, grid points are paged in block-by-block, layer-by-layer order according to the current viewpoint. Block-based view frustum clipping and multi-resolution LOD rendering are implemented at runtime. Under our block-based paging and rendering strategy, the I/O overload is greatly reduced and the algorithm satisfies real-time requirement under limited resources. |
| Keywords: | terrain rendering level of detail(LOD) out-of-core model multi-resolution triangle strip |
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