乌兰乌拉湖地区遥感图像解译及三维可视化系统实现

发布时间：2018-06-26 02:17

本文选题：遥感图像分析 + 数字高程模型　；参考：《西北大学》2014年硕士论文

【摘要】：随着计算机软件和硬件技术的发展,以及3S(RS、GPS、GIS)技术在地质勘查领域的广泛应用,基于遥感图像和地形数据分析、处理技术的地质三维可视化研究得到不断发展,地质资料、地质成果的三维可视化处理,将改变传统地质成果的表达方式,对地质成果的深入理解和推广应用起到积极作用。本文以青藏高原可可西里乌兰乌拉湖地区遥感图像解译及三维可视化系统实现为例,论述了遥感图像解译处理过程,以及数字高程模型的生成,设计实现了基于OpenGL与虚拟现实可视化技术相结合的乌兰乌拉湖地区三维可视化系统；讨论了地形的三维逼真显示、交互控制、三维图形输出、勘查路线与数据管理；该系统为地质工作的前期设计、野外实地工作、特征数据分析、地形地质结构以及资源成果分析评价等工作提供了良好的处理平台。主要工作成果如下： 1、以TM、ETM+、ALOS卫星遥感图像为例,通过实验分析,讨论了区域遥感图像优化处理方法。 2、分析了由地形数据构建数字高程模型的算法,并对逐点插入算法生成DEM进行了实验验证,研究表明通过Delaunay三角形构建TIN网,可以快速、逼真地构建三维地形。 3、设计了以乌兰乌拉湖地区为例的三维可视化系统,实现了该地区地质、地形的三维逼真场景显示,并具备漫游、勘查路线管理和数据输出等功能。
[Abstract]:With the development of computer software and hardware technology and the wide application of 3s (RSN GPS GIS) technology in the field of geological exploration, 3D geological visualization research based on remote sensing image and terrain data analysis and processing technology has been continuously developed, and geological data have been continuously developed. The 3D visualization of geological achievements will change the expression of traditional geological achievements and play a positive role in the further understanding and popularization of geological achievements. Taking the realization of remote sensing image interpretation and 3D visualization system in Hoh Xili Wu Lan Lake area of Qinghai-Xizang Plateau as an example, the process of remote sensing image interpretation and the generation of digital elevation model are discussed in this paper. Based on the combination of OpenGL and virtual reality visualization technology, the 3D visualization system of Wu Lan Wula Lake area is designed and implemented, and the 3D lifelike display, interactive control, 3D graphic output, exploration route and data management of the terrain are discussed. The system provides a good processing platform for the preliminary design of geological work, field work, characteristic data analysis, topographic geological structure and resource results analysis and evaluation. The main results are as follows: 1. Taking the remote sensing image of TMN ETM / ALOS satellite as an example, the optimal processing method of regional remote sensing image is discussed through experimental analysis. 2. The algorithm of constructing digital elevation model from terrain data is analyzed. Experimental results show that constructing tin network by Delaunay triangle can construct 3D terrain quickly and realistically. 3. A 3D visualization system is designed, which takes the Wu Lan Wula Lake area as an example. The 3D realistic scene display of geology and terrain in this area is realized, and it has the functions of roaming, route management and data output.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP753

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