搜索结果: 1-15 共查到“测绘科学技术 Voronoi”相关记录18条 . 查询时间(0.119 秒)
Describing topological relations with Voronoi-based 9-intersection model
Describing topological relations Voronoi-based 9-intersection model
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2016/5/20
The Voronoi-based 9-intersection model (V9I) is a modified version of the original point-set-based 9-intersection model.The modification is made by replacing the complement (exterior) of an entity wit...
Finite Difference Method Runoff Modelling Using Voronoi Cells
Voronoi Diagram runoff modelling TIN IFDM
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2015/10/9
Finite difference runoff modelling has usually been done using a regular grid representation of the terrain. This has various
disadvantages, as the regular pattern does not conform well to observed ...
Dynamic Cartography Using Voronoi/Delaunay Methods
Voronoi Delaunay kinetic data structures dynamic topology interactive cartography
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2015/10/9
We describe two reversible line-drawing methods for cartographic applications based on the kinetic (moving-point)
Voronoi diagram. Our objectives were to optimize the user’s ability to draw and edit...
THE EXPRESSION OF SPHERICAL ENTITIES AND GENERATING OF VORONOI DIAGRAM BASED ON TRUNCATED ICOSAHEDRON DGG
Truncated Icosahedron Management of Three Leaves Nodes Hexagonal Grid Tiles Code Spherical Dynamic Data Model Voronoi Diagram
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2015/8/10
Based on the analysis of current spherical spatial data structure, the paper discusses the clew of the spherical spatial basal subdivision mode which uses inverse Snyder polyhedron equal area projecti...
A Mix Global Data Structure Based on Qtm and Voronoi
Updating Modeling Dynammic
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2015/7/8
To efficiently store, retrieve and update the globalspatial data, a hierarchical and dynamic data model on a globalscale is urgently needed.
The QTM (Quaternary Triangular Mesh) as a hierarchical qua...
MODELLING OCEANOGRAPHIC DATA WITH THE THREE-DIMENSIONAL VORONOI DIAGRAM
GIS Three-dimensional Modeling Oceanography Triangulation Algorithms Data Structures Dynamic
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2015/6/1
Managing oceanographic data with traditional geographical information systems (GIS) is a difficult task because these systems have been primarily designed for land-based applications. The main problem...
LINE VORONOI DIAGRAM BASED INTERPOLATION AND APPLICATION TO DIGITAL TERRAIN MODELLING
triangulation reconstruction technology
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2015/6/1
Local coordinates based on the Voronoi diagram are used in natural neighbour interpolation to quantify the “neighbourliness” of
data sites. In an earlier paper, we have extended the natural neighbour...
A QTM-BASED ALGORITHM FOR GENERATION OF THE VORONOI DIAGRAM ON A SPHERE
QTM-BASED ALGORITHM VORONOI DIAGRAM SPHERE
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2015/3/17
A QTM-BASED ALGORITHM FOR GENERATION OF THE VORONOI DIAGRAM ON A SPHERE.
K-ORDER SPATIAL NEIGHBOURS BASED ON VORONOI DIAGRAM: DESCRIPTION, COMPUTATION AND APPLICATIONS
K-ORDER SPATIAL NEIGHBOURS VORONOI DIAGRAM: DESCRIPTION COMPUTATION APPLICATIONS
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2015/3/13
K-ORDER SPATIAL NEIGHBOURS BASED ON VORONOI DIAGRAM: DESCRIPTION, COMPUTATION AND APPLICATIONS.
AN ADAPTIVE POLYGONAL CENTROIDAL VORONOI TESSELLATION ALGORITHM FOR SEGMENTATION OF NOISY SAR IMAGES
SAR Centroidal Voronoi Tessellation Segmentation Clustering Gamma Distribution
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2014/12/1
In this research, a fast, adaptive and user friendly segmentation methodology is developed for highly speckled SAR images. The developed region based centroidal Voronoi tessellation (R-BCVT) algorithm...
A Time-constrained Network Voronoi Construction and Accessibility Analysis in Location-based Service Technology
LBS Voronoi diagram Accessibility Spatial tessellation Network analysis
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2014/11/28
Accessibility analysis usually requires special models of spatial location analysis based on some geometric constructions, such as Voronoi diagram (abbreviated to VD). There are many achievements in c...
SPACE ALLOCATION OF EDUCATIONAL CENTERS USING MULTIPLICATIVELY WEIGHTED VORONOI DIAGRAM
Multiplicatively Weighted Voronoi Diagram (MWVD) Ordinary Voronoi Diagram Educational Centers Service Area Allocation
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2014/10/16
The main problem of educational centers in a mega city like Tehran, capital of Iran, is that no enforced service areas exist to guide school selection or allow students to make the most convenient com...
基于Voronoi几何划分和层次化建模的纹理影像分割
二值高斯马尔科夫随机场 贝叶斯定理 最大后验概率
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2014/7/8
将基于像素MRF分割方法拓展到基于地物目标几何约束的区域MRF分割，提出了一种基于区域和统计的纹理影像分割方法，其基本思想是利用Voronoi划分技术将影像域划分为若干子区域。在此基础上，采用二值高斯马尔科夫随机场（BGMRF, bivariate Gaussian Markov random field）模型，静态随机场模型和Potts模型从邻域、区域及全局层次描述影像的纹理结构，并将该纹理结构...
MODELLING THREE-DIMENSIONAL GEOSCIENTIFIC DATASETS WITH THE DISCRETE VORONOI DIAGRAM
THREE-DIMENSIONAL GEOSCIENTIFIC DATA SETS DISCRETE VORONOI DIAGRAM
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2014/6/11
Geoscientic datasets are often formed by scattered samples in3D space having highly anisotropic distribution. To model the continuity of the phenomena they represent (e.g. temperature of a body of wat...
提出一种基于网络分析的辐射域Voronoi图和加权Voronoi图构建算法。由于道路网络在中心功能辐射传导上的重要作用，采用网络最短路径距离分析和最短通达时间分析构建的辐射域Voronoi图和加权Voronoi图可以较为真实刻画出功能中心影响范围空间划分的实际情形，进而为空间分析和空间优化提供有力支持。主要讨论了邻近道路分析和区域离散化处理；功能设施的邻近结点检索与生成；基于Dijistra算法的...