| 基于可见性裁剪的地形数据流式传输策略 |
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| 引用本文： | 蔡龙,马秀丽,张开翼,万旺根.基于可见性裁剪的地形数据流式传输策略[J].计算机工程,2010,36(13):283-285. |
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| 作者姓名： | 蔡龙 马秀丽 张开翼 万旺根 |
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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"计划基金资助项目，国家自然科学基金资助项目，上海市教委重点学科建设基金资助项目，上海大学研究生创新基金资助项目 |
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| 摘 要： | 为实现地形场景数据的实时传输和有效显示，根据高空和地面视点对视野区域的要求，提出基于可见性裁剪的数据流式传输策略，当视点位置移动时，能有效确定视野区域节点的可见性和关键节点的层次细节度。实验结果表明，经过服务器端预处理后的地形数据可快速传输到客户端进行精确显示。
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| 关 键 词： | 地形场景数据 视域裁剪 流式传输 层次细节度 |
Terrain Data Stream Transmission Strategy Based on Visibility Clipping |
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| CAI Long,MA Xiu-li,ZHANG Kai-yi,WAN Wang-gen.Terrain Data Stream Transmission Strategy Based on Visibility Clipping[J].Computer Engineering,2010,36(13):283-285. |
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| Authors: | CAI Long MA Xiu-li ZHANG Kai-yi WAN Wang-gen |
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| Affiliation: | (School of Communication and Information Engineering, Shanghai University, Shanghai 200072) |
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| Abstract: | In order to realize real-time transmission and effective display of the terrain landscape data, based on the requirement of different view field of high altitude and surface, this paper presents a terrain data stream transmission strategy based on visibility clipping, it can efficiently determine the visibility of view field and the Level Of Detail(LOD) of key node when position of vision moving. Experimental results show that the terrain data processed by the server can be rapidly transmitted to the client for accurate display. |
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| Keywords: | terrain scene data horizon clipping stream transmission Level Of Detail(LOD) |
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