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Description: 师兄用VC写的由湿地DEM生成的三维模型，赋有纹理，可以动态漫游，地理分析。希望对搞GIS开发的朋友有所帮助。包含DEM和纹理数据，所以有点大，请耐心下载。-senior VC written by DEM wetlands generated 3D model, endowed with texture, dynamic roaming, geographic analysis. Hope to engage in the development of the GIS friends help. DEM contains data and texture, a bit, please download patience.
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Size: 24612864 |
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Description: 模块化设计，类的设计清晰，运用openGL绘制地形DEM数据，性能较好-modular design, the design category clear, use openGL DEM terrain mapping data, better performance
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Size: 1000448 |
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Description: 基于open GL 的3d DEM 高程数据显示, 游览代码,-based on open GL 3d DEM elevation data show, Tour code
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Size: 408576 |
Author: wenweiTang |
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Description: 将我国标准的DEM格式GeoTin转换成ArcGIS支持的Grid格式，格式转换后能用ArcGIS或者Creator处理我国的dem数据。-to our standard format DEM GeoTin into ArcGIS support Grid format, format conversion can use ArcGIS or Creator dem handling the data.
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Size: 19456 |
Author: 邵远征 |
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Description: 基于规则网格DEM数据的地形模拟显示,可以用鼠标和键盘进行漫游.-rules-based grid DEM data of the terrain simulation, it can be used for the mouse and keyboard roaming.
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Size: 1058816 |
Author: RainMan |
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Description: 大区域DEM数据处理及其三维可视化应用,大区域DEM数据处理及其三维可视化应用-large regional DEM data processing and 3D visualization applications, DEM large regional data processing and 3D visualization application
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Size: 3600384 |
Author: 张圣望 |
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Description: 用OPENGL编写的一种地形数据文件处理工具的开发,主要是提取并显示DEM文件-use OpenGL prepare a topographical data processing tool for the development, mainly DEM extraction and display documents
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Size: 144384 |
Author: dm |
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Description: 基于GRID格式DEM的等值线追踪算法（已删除编译目录），可用于多种散点插值生成的格网，只需将格网数据写成GRID格式的文本即可．-GRID-based format of the contour DEM tracking algorithm (the compiler has been deleted directory), can be used for a variety of scattered point interpolation to generate a grid, simply written GRID Grid data can be formatted text.
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Size: 61440 |
Author: 追风 |
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Description: DEM中提取地形特征的一个新算法，简单实用-DEM to extract topographical features of a new algorithm, simple and practical
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Size: 386048 |
Author: OO |
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Description: DEM中提取地形特征线的一个新算法，解决了以往一些算法的缺陷-DEM terrain characteristics extracted a new algorithm, some algorithms to solve the shortcomings of the past
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Size: 282624 |
Author: OO |
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Description: DEM中提取地形特征线的一个新算法，解决了以往一些算法的缺陷-DEM terrain characteristics extracted a new algorithm, some algorithms to solve the shortcomings of the past
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Size: 3120128 |
Author: OO |
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Description: 针对格网DEM提取地形特征点的算法，利用AE进行开发-Grid DEM for terrain feature point extraction algorithms, the use of AE for development
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Size: 94208 |
Author: OO |
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Description: DEM显示程序，可以显示规则格网DEM，可以将离散点构建成规则格网（还有待完善），可以实现DEM的三维浏览。-DEM display program, you can show the Regular Grid DEM, discrete points can be constructed grid rules (yet to be perfect), can realize the three-dimensional DEM browser.
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Size: 121856 |
Author: 无忧居士 |
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Description: 这是一个2维dem数据读取，显示的vc写程序。-This is a 2-D data dem read, write procedures shown vc.
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Size: 4489216 |
Author: 赵骞 |
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Description: 此种模型绘制类似米字形的网格。由于整个过程递归调用绘图函数，所以可以根据误差判断绘制DEM的精细程度，从而绘制出不同精细程度的DEM，为解决漫游中数据量较大而引起的画面不流畅现象提供了模型基础。 本文并没有对LOD作研究，只是给出了四叉树的建立和遍历绘图的方法。
#include "Pt3d.h" //空间点类(主要记录空间点的x,y,z)
-Rendering such a model similar to rice-shaped grid. Recursive calls as a result of the whole process of mapping function, so it can be judged according to the error map of the fine DEM, thus rendering a different degree of precision DEM, for the settlement of roaming in the amount of data arising from the larger screen does not provide a model of fluid based on the phenomenon. This article does not LOD for research, but given quadtree traversal of the establishment and mapping method.# Include Pt3d.h // space-point type (mainly recorded space points x, y, z)
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Size: 5120 |
Author: zhanglei |
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Description: DEM数据的官方文件格式说明，详细介绍了dem数据的各个字段的含义，对研究三维的人有很大帮助-DEM data formats for official documents, detailing the various fields of data dem meaning the study of three-dimensional people are very helpful
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Size: 140288 |
Author: CiCi |
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Description: 该论文介绍了基于OpenGL的DEM地形可视化和虚拟漫游系统的实现方法-The paper describes the DEM based on the OpenGL Terrain Visualization and virtual roaming system method
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Size: 750592 |
Author: 魏凌云 |
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Description: 提出基于格网划分的实时LOD 分层方法, 该方法基于DEM 和影像数据固有的栅格特点, 使用简单的几何算法即可实现DEM 数据的动态分层, 计算量小, 可实现对大数据集DEM 数据的实时漫游.-Grid based on the division of real-time LOD stratification method based on DEM and raster image data inherent characteristics, the use of simple geometric algorithm can be realized DEM data dynamic layering, a small amount of calculation can be realized for large data sets DEM data in real-time roaming.
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Size: 353280 |
Author: 魏凌云 |
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Description: 由于传统的基于文件管理的虚拟地形景观漫游系统在数据安全性、多用户操作、网络共享及数据动态更新等方面已不能满足数字城市或数字地球对海量空间数据一体化管理和在线实时应用的要求。介绍了基于Oracle
海量数据库的DEM动态可视化方法,包括金字塔结构的数据组织机制、采用数据分页的动态调度技术、与视点相关的地形简化和基于多线程的渐进描绘技术等。根据全国1∶25 万比例尺DEM数据库的应用实验证明该方法是可行的,并可以推广到影像以及其他模型数据的集成应用。-Because of the traditional paper-based management of virtual terrain landscape roaming system in data security, multi-user, network and data-sharing, such as dynamic update has been unable to meet the number of cities or digital terrestrial integration of massive spatial data management and online real-time applications requirements. Based on Oracle database DEM Massive dynamic visualization methods, including the pyramid structure of the data organization mechanism, the use of the data page of the dynamic scheduling techniques, with the view-dependent terrain simplification and Multithread-based progressive portray technology. According to the National 1:25 million scale DEM database application experiment shows that this method is feasible and can be extended to imaging, as well as other model data integration applications.
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Size: 315392 |
Author: 魏凌云 |
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Description: 关于地理高程坐标的转换程序，可以为其他程序员提供借鉴作用-Elevation on the geographical coordinates of the conversion process can be provided for other programmers reference
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Size: 398336 |
Author: 崔伟 |
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