| 基于GIS的空间数据可视化方法及其在地球化学中的应用 | |
| 刘荣高 | |
| 2000 | |
| Degree Grantor | 中国科学院地球化学研究所 |
| Place of Conferral | 中国科学院地球化学研究所 |
| Degree Name | 博士 |
| Degree Discipline | 地球化学 |
| Keyword | 空间可视化 分布式数据分享 面向应用 数字水印 长江 营养元素 |
| Abstract | 昂贵的GIS软件、空间数据缺乏与GIS操作复杂妨碍地球科学家进行空间数据表示。本文提出了解决这一问题的技术方法：分布式数据共享使集中式的空间数据得到最大利用，以容易获得数据；将面向应用的GIS功能从其它功能中分离开来，以移动代码的方式为用户提供分布式空间信息可视化服务，减少软件费用；在移动代码中，组合复杂的制图操作，提供制图工具，使操作简单化。 |
| Other Abstract | Non-spatail represent way such as table or graph cannot express the spatial pattern and trend of the spatial position-related data, so the spatial visualization method is need. But expensive GIS software, inefficient spatial data and complex operation impede geo-researcher to access the spatial visualization tools. This thesis proposed a technical solution to the problem: using the distributed data sharing method to best utilized of available data, separating application-oriented component from GIS other competent and distributing them as mobile code to reduce software expense and developing the appropriate tools to make user ease to use. The main works done are following: (1) A flexible and extensible open distributed geospatial data sharing framework was developed and the very large distributed geospatial data visualization architecture was implemented. Different format data were transformed by data format driver to accord with the Open GIS consortium's Simple Feature specifications and have same projection and coordinate system. (2) The DCT-based watermarking method for very large remote sensing data was Implemented and the FFT-based vector spatial data watermarking method were proposed in order to protect the geospatial data copyright. (3) The methods visualizing of space-related alphanumeric data were discussed. (4) Take the visualization of the nutrient element of Changjiang as example to show the application of application-oriented data sharing method. The data for visualization except nutrient element analysis data were stored in server, user input the analysis data in client then these data can be visualized in spatial form. |
| Pages | 135 |
| Language | 中文 |
| Document Type | 学位论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/3556 |
| Collection | 研究生_研究生_学位论文 |
| Recommended Citation GB/T 7714 | 刘荣高. 基于GIS的空间数据可视化方法及其在地球化学中的应用[D]. 中国科学院地球化学研究所. 中国科学院地球化学研究所,2000. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| LW003547.pdf（1295KB） | 暂不开放 | -- | Application Full Text | |||
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