| 基于离散LOD-Imposter技术的森林实时渲染算法研究及实现 |
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| 引用本文： | 王道臣,万旺根,丁欢.基于离散LOD-Imposter技术的森林实时渲染算法研究及实现[J].计算机应用与软件,2009,26(6):18-20. |
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| 作者姓名： | 王道臣 万旺根 丁欢 |
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| 作者单位： | 上海大学通信与信息工程学院,上海,200072 |
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| 基金项目： | 国家863项目(2007AA01Z319) |
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| 摘 要： | 森林植被的实时可视化技术是复杂虚拟环境渲染的重要组成部分,也是影响虚拟环境逼真度的重要因素。提出了一种基于离散LOD和Imposter相结合技术的森林实时渲染算法,该算法利用像素作为LOD选择参数,通过像素阈值判定对不同面数的模型进行选择渲染,使用二叉树遍历算法对场景中树的节点进行遍历,利用Imposter技术对距离较远的模型用一张texture代替。通过使用关键帧增加树的动画效果,利用动态的光影效果提高树的真实性。该算法能够很好地模拟大规模森林的效果,满足了对大规模森林进行漫游的实时性的要求。
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| 关 键 词： | LOD 关键帧 阈值 漫游 虚拟现实 |
STUDY AND IMPLEMENTATION OF REAL-TIME RENDERING ALGORITHM FOR FOREST BASED ON DISCRETE LOD-IMPOSTER |
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| Wang Daochen,Wan Wanggen,Ding Huan.STUDY AND IMPLEMENTATION OF REAL-TIME RENDERING ALGORITHM FOR FOREST BASED ON DISCRETE LOD-IMPOSTER[J].Computer Applications and Software,2009,26(6):18-20. |
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| Authors: | Wang Daochen Wan Wanggen Ding Huan |
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| Affiliation: | School of Communication and Information Engineering;Shanghai University;Shanghai 200072;China |
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| Abstract: | Real-time visualization technique for forest vegetation is an important component in complex virtual environment rendering.It plays an important role in affecting the fidelity of the virtual environment.In this paper we propose an algorithm of real-time forest rendering based on discrete LOD-Imposter.The algorithm uses the pixel as the chosen parameter of LOD,selectively renders the model of different resolution by determining the pixel threshold.It adopts the algorithm of binary tree traversing to traverse... |
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| Keywords: | LOD |
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