不规则三角网

VB环境下不规则三角网的算法设计与实现

Algorithm Designing and Realizing of TIN in VB

不规则三角网的生成采用逐点插入法。

TIN generated by the insertion point by point .

计算几何的不规则三角网算法研究及在GIS中应用

Study Arithmetic of Triangulated Irregular Network with Application

针对场监测应用的特点提出了一种基于不规则三角网（TIN）的无线传感器网络节点调度方法。

Proposes an efficient TIN-based node schedule method for field estimation in wireless sensor networks .

介绍了基于规则格网（GRID）和基于不规则三角网（triangulatedirregularnetwork，TIN）两种数据格式的地形动态建模方法。

Introduce methods for terrain dynamic modeling according to Grid and Tin ( Triangulated Irregular Network ) .

然后根据水下地形分析的特点，提出并研制了有关的新算法&基于不规则三角网（TIN）的直接计算法。

According to the characteristic of underwater terrain analysis , a new algorithm is set up .

在目前已有基于规则格网（Grid）生成地形剖面线的基础上，提出了一种适用于不规则三角网（TIN）的剖面线生成算法。

This paper presents an algorithm for generating terrain section line on TIN DTM based on the algorithm on Grid DTM .

针对线路勘测设计的特点，介绍了一种适合于线路CAD应用的快速建立和在线动态更新不规则三角网（TIN）的方法。

Aiming at the purpose of route survey and design , an efficient algorithm for TIN generation and updating is introduced in this paper .

基于此，讨论了在图形平台AutoCAD下利用不规则三角网（TIN）进行土方计算的具体方法。

In this paper , the particular calculating of cutting and filling is discussed using triangulation network TIN under the figure platform AutoCAD .

其中不规则三角网（TIN）能以不同层次的分辨率来描述地形表面，被视为DEM中最基本和最重要的一种模型。

Because TIN can present the surface of terrain by different resolutions , it is the most important and basic model in GIS .

这些数据模型包括全要素的结构化不规则三角网（TIN）与GIS一体化的数据模型以及网状模型。

These data models include the unified model of all essential factor 's structuralized triangulated irregular network ( TIN ) model and GIS as well as network model .

规则格网模型、不规则三角网模型和等高线模型是数字高程模型（DEM）的三种表示方法。

DEM can be expressed in three kinds of methods which are grid , Triangulated Irregular Netting ( TIN ) and Contour .

围绕提高建模算法的效率和改进模型表示地形的逼真度与精度等问题，研究了顾及地形特征约束条件下不规则三角网TIN的建模方法和改进措施。

In order to improving modeling efficiency and model fidelity , the author studies the modeling methods and improving measure on constructing TIN considering limitation of terrain character .

并基于等高线矢量数据建立不规则三角网，再内插格网生成DEM点阵数据。

A triangulated irregular network ( TIN ) is constructed based on vector data , and DEM point-array data is computed by interpolating grid on TIN .

DEM数据结构有离散点结构、规则格网结构、不规则三角网结构、等高线结构和混合结构五种。

The data structures of DEM have five kinds of structure , including dispersed point , regular network , triangle irregular network , counter and mixing structure .

通过对常用的4种DTM（DigitalTerrainmodel）建模方法进行分析，选取不规则三角网方法对离散数据进行建模。

Through the analysis of the four methods of the DTM ( Digital Terrain Model ) Modeling , we select the TIN ( Triangulated Irregular Network ) method to build up the model of scattered data .

在详细介绍了在建模过程中经常需要解决的主要技术难点，包括TIN不规则三角网结构、线性八叉树码、三维图形消隐技术和交互切割技术。

The main technical difficulties that need to be surmounted in the process of creating a solid model include triangulated irregular network , linear octree , 3D hidden technology and interactive cutting technology .

以不规则三角网模型为例，介绍了基于GIS技术制作洪水风险图的制作流程，并对制作洪水风险图中的数字水面模型的生成等关键问题进行了探讨。

The process flow of flood hazard map with Triangulated Irregular Net is introduced . And the key problems in the process of making the flood hazard map is discussed , especially the formulation of the digital water-surface model .

论文研究了离散点构造不规则三角网的过程，并对经典的构造Delaunay三角网算法进行了改进，改进后的算法具有较好的运行效果。

In this thesis , the author discusses the process of constructing triangulated irregular network with discrete point and improves the algorithm of constructing Delaunay network .

不规则三角网是用业表达连续表面的主要数据结构之一，由于TIN的特性，用TIN表示表面具有明显的优点，因此如何组织TIN的数据结构十分重要。

Triangulated irregular network ( Tin ) is one of the two main data structures for representing continuous surface . Tin has apparent advantages due to its properties . How to construct Tin is rather important .

Delaunay三角网作为诸多不规则三角网中结构最优的三角网，被广泛应用于GIS、地学分析、有限元分析等领域。

As a kind of the most excellent irregular triangulation network ( ITN ), Delaunay triangulation network ( D-ITN ) is widely used in the fields of GIS , geography analysis and finite element analysis ect .

在GIS应用领域中，Delaunay三角网通常被用于生成不规则三角网（TIN）模型，并用于描述地表形态。

The Delaunay triangulation is commonly used to generate triangulated irregular net work ( TIN ) models for a best description of the surface morphology in a variety of applications in geographic information systems ( GIS ) .

论文主要贡献包括以下几个方面：（1）提出了基于高程突变的TIN（triangulatedirregularnetwork，不规则三角网）过滤算法和基于邻近高差及辅助平面的TIN过滤算法。

The main contributions of this dissertation are as following : Firstly , TIN ( Triangulated Irregular Network ) filtering algorithm based on height jump and TIN filtering algorithm based on neighboring height difference and assistant plane are presented .

对于这些网格点，我们应用Delaunay三角网格化技术及细节层次技术建立了不规则三角网形态的数字高程地面模型，来近似代替实际的地面。

For these lattice points , the thesis applies the Delaunay triangulation technology and the Level of Detail method to establish Digital Elevation Model based on Triangulated Irregular Network to replace the actual ground approximately .

本文研究了等高线的三维可视化显示的基本理论与方法，主要内容包括离散数据的获取，等高线三维显示的建模，讨论了规则格网（Grid）模型和不规则三角网（TIN）模型的建模方法。

This paper studies basic theory and methods of 3D contour line visualization . The major content of this paper includes the gain methods of discrete data , model building of 3D display of contour line . In the modelling methods , it discusses Grid model and TIN model .

再对由节点平面坐标和节点余氯含量构成的三维空间散点（x，y，z），用Delaunay三角网构网原则建立不规则三角网（TIN）；

Then , Triangular Irregular Net ( TIN ) is established by the principles of Delaunay on the base of scattering 3D spacial points ( x , y , z ) whose 3D coordinates consist of the 2D coordinate and the value of residual chlorine ;

基于不规则三角网（TIN）的流域特征自动提取算法与原型系统设计研究以非均质各向同性渗流模型仿真地下水流，用不规则三角网格有限差分法求解三维数值仿真模型。

The Study about the Algorithms of Automatic Drainage Extracting and Software Design Based on Triangulated Irregular Network ; The groundwater flow is simulated with the seepage model of heterogeneity isotrope , and the partial differential equations are solved with finite difference scheme of irregular triangle net .

为了有效地组织和管理三维GIS空间数据，实现对三维空间实体高效、完整地表达，提出了限定不规则三角网（TIN）与构造实体几何（CSG）集成的仿真建模算法。

In order to organize and manage 3D GIS spatial data effectively , and represent 3D spatial entity integrally , a new simulation modeling algorithm was put forward , which combined data structures of constrained Triangulated Irregular Network ( TIN ) and Constructive Solid Geometry ( CSG ) .

采用基于约束的不规则三角网建立地貌模型，研究了由格网DEM、等高线数据及数字影像建立三维地貌模型的方法，以及水系、道路及居民地模型的建立与绘制。

Based on constrained irregular triangle net , the author depicts the ways to erect and plot three-dimensional model battlefield terrains with the help of Grid Net DEM , contour lines and digital graphics , and ways to erect models of river systems , roads and buildings .

本文在前人研究的基础上，探讨和研究了国内外的不规则三角网生成算法，通过理论和实验选择了Tsung-paofang和Les。

This paper is about of arithmetic studys of triangulated irregular network which is published in abroad and home , and alter an arithmetic of Delaunay Triangulation Using a Uniform Grid which was present by Tsung-Pao Fang and Les A.