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- 3D terrain data 三维地形数据
- This study use OpenGL to realize 3D terrain visualization to help read Terrain forest resource map. 如果在资源管理系统中增加地形三维显示功能,那么对地形林相图的应用是非常有帮助的,本文以ArcView导出的高程值为数据源,应用OpenGL实现了地形的三维显示。
- Based on them, a system of interactive 3D terrain building was designed and implemented based on VRML. 以此为基础,设计并实现了一个基于VRML的交互式三维地形生成系统。
- A novel 3D terrain matching method based on 3D Zernike moments is presented in this paper. 提出了一种基于面特征的三维地形匹配算法。
- A study of IDL application in the visualization of 3D terrain[J].Journal of Jilin University:Earth Science Edition, 2003,33:91-95. IDL在三维地形可视化中的应用研究[J].;吉林大学学报:地球科学版;2003;33:91-95
- Walkthrough in massive terrain data is a key technology and difficult problem of GIS, VR, game and simulation, etc. 摘要大范围、海量地形数据的快速漫游是GIS、虚拟现实、游戏、仿真等领域的关键技术与难点之一。
- Using C++ language and OpenGL Graphic Library to implement the algorithm of 3D terrain analysis and terrain visualization, and this algorithm has become part of vega3DGIS. 使用C++语言和OpenGL图形库编写了有关三维地形分析,三维地形可视化的算法,并为Vega3DGIS所采纳。
- The storage and management of massive terrain data is the key of large-scale terrain roaming. 海量地形数据的存储与管理是大规模地形实时漫游系统的关键。
- The visualization researchof 3D terrain & landforms is an important part of geographic information system (GIS), digital photography (DP) and remote system (RS). 三维地形地貌的可视化是地理信息系统、数字摄影测量(DP)和遥感系统(RS)的重要研究内容。
- The primary bug of this algorithm is that it discards the relative position information of terrain data and the normalized processing. 因为地形熵算法丢掉了地形的相对位置信息及对地形数据做了归一化处理,使得其在地形跟随/地形回避中的应用存在着匹配误差容易发散的问题。
- Experimental results on real terrain data show that the algorithm based on one DAG improves the computing performance of an extraction of terrain. 实验表明,基于DAG表示的地形抽取算法利用变化数据间的空间关系提高了计算性能。
- The high precision terrain data in the STK/Terrain modul is used as data sources, which is converted to the OpenFlight format model that Creator or Vega can discriminated . 以STK/Terrain 模块中的高精度地形高程数据作为数据源,将其转换成Creator 和Vega 能识别的OpenFlight 格式模型;
- The system can do some operations including alternant planning the railway in the 3D terrain landscape,3D modeling,budgeting the count of evolution,querying the information of the railway,outputting of AVI. 该系统实现了在三维地形景观中进行交互式的铁路选线设计,并能对设计出的铁路线进行三维建模、挖方量预算、信息查询以及三维场景的AVI动画文件输出。
- The model is based on a collection of a divisional terrain data defined as simplicial complexes arranged into a partially ordered set by time and space. 模型把子区域地形几何数据定义为单纯复合形集,按地形变化时间顺序和空间关系组织成一个偏序集。
- Based on the research above, a large-scale 3D terrain walkthrough system is designed and implemented based on the above content, which well validates the rapid rendering technique"s effect. 基于以上研究内容,设计并实现了一个三维地形漫游系统,使得本文提出的快速绘制方法的有效性得到了很好的验证。
- Another new element is the 'threat intervisibility' system.This system allows for terrain data and known enemy field positions to be plotted on a grid map. 另外一个新组件是“威胁可视化“系统,这一系统可以在网格地图上绘出地形数据和已知的敌人野外驻点。
- Divided metadata cluster provides high-effective and high-availablemetadata service, and OSD cluster with parallel terrain data transmission provides high t... 这类系统对地形绘制的效率有很苛刻的要求,需要高效的地形绘制算法和数据调度策略。
- A Method of 3D Terrain Mouse Selection in Grid Data Based on OpenGL 基于OpenGL的网格数据三维地形鼠标取值方法
- The achievements of this thesis can besummarized as fOllows:Present a simple description of DTM(Digital Terrain Model) and the technology ofterrain modeling with reguIar and irregular terrain data. 1)在对数字地面模型建模方法进行简要小结的基础上,对基于规则格网和不规则三角网的地形建模技术进行了研究。
- The statistical fractal features of the original coarse terrain data set were determined through linear regression, based on which a denser terrain can be derived by means of bilinear interpolation. 首先通过线性回归得到原始稀疏三维地表数据的分形统计特性,再以此特性??基础采用双线性插值的思想来构造更??稠密的自然地貌。