搜索结果: 1-15 共查到“工学 Voronoi”相关记录59条 . 查询时间(0.076 秒)
为研究垫层颗粒的形状、粒径级配及孔隙率与土石坝坝面防渗土工膜在颗粒垫层上的顶破胀破之间的关系，常采用真实颗粒材料进行试验，但受试样随机性和试验条件不可控的限制，往往难以得到具有统计意义的规律。针对这一问题，基于Voronoi图建立颗粒垫层的随机重构模型，通过调整模型中随机过程的参数实现对模型粒径级配和孔隙率的控制，同时对随机重构模型中颗粒的形状参数进行统计分析，并与真实颗粒的形状参数进行显著性检验...
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...
Dynamic Field Process Simulation within GIS: the VORONOI Approche
Data Structure Voronoi Diagram 3D GIS Simulation Dynamic
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2015/12/3
Simulation of a dynamic and continuous phenomenon (field) is a difficult task for GISs as their data structures are 2D and static and are not well-adapted to manage neither the dynamic behavior of the...
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...
衍射层析成像的Voronoi图密度补偿算法的研究
密度补偿 衍射层析成像 非均匀傅里叶变换 Voronoi图
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2017/1/12
网格算法是最常见的衍射层析成像的频域重建算法，然而这种算法却容易引入误差，且对采样点的分布形状较敏感，因此，本文提出了一种基于Voronoi图密度补偿的超声衍射层析成像重建算法.首先，用三角剖分快速生成算法生成投影数据的Voronoi图，并对在外凸壳上对应的Voronoi图面积是无穷大的点通过拟合、插值处理使之变为有限的补偿面积，从而得到整个点集的补偿面积.其次，提出了基于Voronoi图面积密度...