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高性能快速地形漫游算法 被引量：2

High Performance Fast Terrain Walkthrough Algorithm
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摘要 高性能地形漫游是GIS、虚拟现实及军事模拟中的研究热点。大规模地形算法将部分数据常驻内存,并采取各种方法来简化地形、加速绘制。该文通过对地形分块,使用背面剔除及改进的视点误差来进行细节层次处理。提出基于屏幕误差包围盒的地平线遮挡剔除技术,提高算法的效率。采用内存映射文件方式进行DEM数据的加载,实现高性能海量数据的处理。 Terrain walkthrough is a hot point in GIS,virtual reality and military simulation fields.Large scale terrain algorithm is used to load data partly into the memory,then simplify terrain to speed up drawing-rate.This paper presents an algorithm which blocks the terrain,uses back culling and modifies deviation equation to construct Level Of Detail（LOD）,and then uses a new horizon culled method based on screen-deviation bounding box.This algorithm has a fast drawing-rate.Besides,memory mapping file technique to load DEM data is used to make the algorithm have high performance data process ability.
作者 罗健欣 倪桂强 郭珍军
机构地区 解放军理工大学指挥自动化学院 解放军总医院通信站
出处 《计算机工程》 CAS CSCD 北大核心 2008年第8期238-239,257,共3页 Computer Engineering
基金 国家自然科学基金资助项目(60303023)
关键词 地形漫游 细节层次 视点误差 包围盒 地平线剔除 内存映射 terrain walkthrough Level Of Detail（LOD） view-dependent deviation bounding box horizon culling memory mapping
分类号 TP391 [自动化与计算机技术—计算机应用技术]
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参考文献11

  • 1赵友兵,石教英,周骥,潘志庚.一种大规模地形的快速漫游算法[J].计算机辅助设计与图形学学报,2002,14(7):624-628. 被引量：60
  • 2马照亭,潘懋,胡金星,吴焕萍,王占刚.一种基于数据分块的海量地形快速漫游方法[J].北京大学学报（自然科学版）,2004,40(4):619-625. 被引量：30
  • 3Lindstrom P, Koller D. Real-time, Continuous Level of Detail Rendering of Height Fields[C]//Proc. of SIGGRAPH'96. Los Angeles, California, USA: [s. n.], 1996: 109-118.
  • 4Lindstrom P, Koller D. Level-of-Detail Management for Real-time Rendering of Phototextured Terrain[EB/OL]. (1995-06-01). http://www.gvu.gatech.edu/people/peter.lindstrom/papers/tr/#95-06.
  • 5Bradley D. Evaluation of Real-time Continuous Terrain Level of Detail Algorithms[EB/OL]. (2003-08-08). http://www.derekbradley. ca/Papers/carleton03_TerrainLOD.pdf.
  • 6Rottger S. Real-time Generation of Continuous Levels of Detail for Height Fields[C]//Proc. of the 6th International Conference in Central Europe on Computer Graphics and Visualization. Plzen, France: Science Press, 1998: 315-322.
  • 7Hoppe H. Smooth View-dependant Level-of-detail Control and Its Application to Terrain Rendering[C]//Proc. of IEEE Visualizaion. NC, USA: [s. n.], 1998:35-42.
  • 8Hoppe H. Progressive Meshes[J]. Computer Graphics, 1996, 30(2): 99-108.
  • 9普建涛,查红彬.大规模复杂场景的可见性问题研究[J].计算机研究与发展,2005,42(2):236-246. 被引量：19
  • 10Kirmse A. Game Programming Gems4[M]. 沙鹰,译.北京:人民邮电出版社,2005.

二级参考文献47

  • 1[1]U S Geological Survey National Mapping Division. Standards for Digital Elevation Models[OL]. http://rockyweb.cr.usgs.gov/nmpstds/acrodocs/dem/2DEMO198.PDF, 1998
  • 2[2]P Lindstrom, D Koller, et al. Real-time continuous level of detail rendering of height fields[A]. In: Computer Graphics Proceedings, Annual Conference Series, ACM SIGGRAPH, New Orleans, Louisiana, 1996. 109～118
  • 3[3]Mark Duchaineauy, Murray Wolinsky, et al. ROAMing terrain: Real-time optimally adapting meshes[A]. In:Proceedings of IEEE Visualization, Phoenix Arizona, 1997. 81～88
  • 4[4]Stefan Rottger, Wolfgang Heidrich, Philipp Slasallek, et al. Real-time generation of continuous levels of detail for height fields[A]. In: Proceedings of the 6th International Conference in Central Europe on Computer Graphics and Visualization, 1998. 315～322
  • 5[5]Huagues Hoppe. Smooth view-dependant level-of-detail control and its application to terrain rendering. In: Proceedings of IEEE Visualization, Research Triangle Park, Worth Carolina, 1998. 35～42
  • 6[6]Andreas Ogren. Continuous level of detail in real-time terrain rendering[D]. http://www.cs.umu.se/～tdv94aog/ROAM.pdf, 2000
  • 7[7]Jonathan Blow. Terrain rendering at high levels of detail[A]. In:Proceedings of Game Developers' Conference, San Jose, California, http://www.bolt-action.com/papers/gdc2000-final.zip, 2000
  • 8[8]Jonathan Blow. Terrain rendering research for games[A]. In: Computer Graphics Proceedings, Annual Conference Series, ACM SIGGRAPH, New Orleans, Louisiana, 2000. Course 39
  • 9[2]Pajarola R B. Large Scale Terrain Visualization Using the Restricted Quadtr ee Triangulation.In:Ebert D,Hagen H,Rushmeier H,eds. IEEE Visualization '98.Nort h Carolina:IEEE, 1998.19～26
  • 10[3]Lindstrom P, Pascucci V.Visualization of Large Terrains Made Easy. In:Joy K I,Varshney A,Ertl T,eds. IEEE Visualization 2001.San Diego,California:IEEE, 200 1.363～370

共引文献97

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二级引证文献6

计算机工程
2008年 第8期

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