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基于PC的虚拟地形漫游系统的实现 被引量:11
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作者 杨鹏 姚旺生 《计算机仿真》 CSCD 2003年第7期78-80,共3页
简要介绍了虚拟地形漫游系统的基本概念 ;从环境建模的几何建模、运动建模和模型切分等方面 ,说明了虚拟地形漫游系统的建模原理和实现过程 ;讨论了在Windows环境下使用OpenGL进行三维图形编程的基本步骤 ,并在普通微机上加以实现 。
关键词 虚拟地形漫游系统 PC 几何建模 虚拟现实 计算机图形学 纹理映射 地形学理论
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Digital regionalization of geomorphology in Xinjiang
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作者 柴慧霞 周成虎 +1 位作者 陈曦 程维明 《Journal of Geographical Sciences》 SCIE CSCD 2009年第5期600-614,共15页
This paper presents a method of geomorphologic regionalization for Xinjiang, with the use of Srtm-DEM (resolution 90 m) and TM images for 1990 (resolution 30 m). After interpretation and classification of geomorpholog... This paper presents a method of geomorphologic regionalization for Xinjiang, with the use of Srtm-DEM (resolution 90 m) and TM images for 1990 (resolution 30 m). After interpretation and classification of geomorphologic types, the present research focuses on the qualitative and quantitative distribution of different geomorphologic types based on geographical grid analysis. Then, by using system clustering analysis method, geomorphologic types are grouped into divisions. The resulting geomorphologic regionalization hierarchy of Xinjiang includes three levels, i.e., macro-landform divisions, medium-landform divisions, and micro-landform divisions, containing 6, 23 and 200 types, respectively. This method makes it possible to digitally delimit geomorphologic regions. Comparison and verification show that the spatial precision of the boundaries of geomorphologic subareas in Xinjiang is very high. 展开更多
关键词 GEOMORPHOLOGY geomorphologic regionalization geographical grid system clustering
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Development and application of geochemical data processing system based on fractal theory
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作者 LI Shichao PENG Yuanyuan +2 位作者 JIANG Wei MENG Jingyao LU Laijun 《Global Geology》 2011年第4期231-235,共5页
GC-GIS system is a geochemical data processing system based on fractal theory. The system realized quantity statistics function by calling Surfer and MapInfo software, and it is compiled with Visual Basic language. Th... GC-GIS system is a geochemical data processing system based on fractal theory. The system realized quantity statistics function by calling Surfer and MapInfo software, and it is compiled with Visual Basic language. This system is designed to integrate the functions both quantity statistics of Surfer and spatial data management of MapInfo. A new algorithm of fractal is added up to GC-GIS. Taking example for Weichang region of Hebei to test the system, the processing results show that the model can match the real distribution of mine well. 展开更多
关键词 fractal theory geochemical data processing secondary development GIS SURFER
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