| Virtual Huanghe River System： Framework and Technology |
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| 作者姓名： | LU Heli LIU Guifang SUN Jiulin |
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| 作者单位： | 1. State Key Laboratory of Resources and Environment Information System，Institute of Geographical Sciences and Natural Resources Research，Chinese Academy of Sciences，Beijing 100101，China; 2. College of Environment and Planning，Henan University，Kaifeng 475004，China |
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| 基金项目： | Under the auspices of the Science Data Sharing Pilot Project of Ministry of Science and Technology of China (No. 2003DEA2C010), Natural Science Fund of Henan University on Virtual City Construction Method (No. 04YBRW026) |
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| 摘 要： | 1 Introduction Huanghe (Yellow) River basin is located in 32°–42°N, 96°–119°E. The area of the catchment is more than 752,000km2. The river is 5464km long with a drop in elevation of 4830m. Among the whole area, the moun- tainous and stone area accounts for 29%, loess and hills area 46%, sandy area 11% and plain area 14%, respec- tively. Different natural landscapes exist in this area. The Huanghe River flows through the Loess Plateau, where the soil is eroded seriously (Wang, 2002;…
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| 关 键 词： | 黄河 虚拟现实 动态实时管理 多值性 水利工程 |
| 收稿时间： | 2006-05-07 |
| 修稿时间： | 2006-07-20 |
Virtual Huanghe River System: Framework and technology |
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| LU Heli LIU Guifang SUN Jiulin.Virtual Huanghe River System: Framework and technology[J].Chinese Geographical Science,2006,16(3):255-259. |
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| Authors: | Heli Lu Guifang Liu Jiulin Sun |
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| Institution: | (1) State Key Laboratory of Resources and Environment Information System, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China;(2) College of Environment and Planning, Henan University, Kaifeng, 475004, China |
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| Abstract: | Virtual Reality provides a new approach for geographical research. In this paper, a framework of the Virtual Huanghe (Yellow)
River System was first presented from the view of technology, which included five main modules—data sources, 3D simulation
terrain database, 3D simulation model database, 3D simulation implementation and application system. Then the key technologies
of constructing Virtual Huanghe River System were discussed in detail: 1) OpenGL technology, the 3D graphics developing instrument,
was employed in Virtual Huanghe River System to realize the function of dynamic real-time navigation. 2) MO and OpenGL technologies
were used to make the mutual response between 3D scene and 2D electronic map available, which made use of the advantages of
both 3D scene and 2D electronic map, with the macroscopic view, integrality and conciseness of 2D electronic map combined
with the locality, reality and visualization of 3D scene. At the same time the disadvantages of abstract and ambiguity of
2D electronic map and the direction losing of virtual navigation in 3D scene were overcome.
Foundation item: Under the auspices of the Science Data Sharing Pilot Project of Ministry of Science and Technology of China
(No. 2003DEA2C010), Natural Science Fund of Henan University on Virtual City Construction Method (No. 04YBRW026)
Biography: LU Heli (1971–), male, a native of Kaifeng of Henan Province, Ph.D. candidate, specialized in LUCC, GIS. |
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| Keywords: | Virtual Reality Virtual Huanghe River System dynamic real-time navigation mutual response between 3D scene and 2D electronic map |
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