scholarly journals Information technology for accounting nearby area relief when solving tasks of assessing industrial and natural hazards and risks.

2020 ◽  
Vol 11 (8-2020) ◽  
pp. 202-204
Author(s):  
S.Yu. Yakovlev ◽  
◽  
A.S. Shemyakin ◽  
A.V. Shestakov ◽  
◽  
...  
Keyword(s):  
Information Technology ◽  
Information System ◽  
Geographic Information System ◽  
Spatial Data ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Emergency Control ◽  
Gis Technologies ◽  
The Moment

At the moment, level of development of GIS technologies is such that it is possible to implement a model of emergence and development of emergencies using a single geographic information system, while having ability to use many functions embedded in the system, and accessing spatial data through an API interface. This paper gives an example of creating a three-dimensional model of an accident using QGIS tools, illustrating the capabilities of this GIS for solving emergency control tasks.

scholarly journals Recognition of connected components in the problem of restoring a three-dimensional model from projection images

2019 ◽  
Author(s):  
Наталья Жилина ◽  
Natal'ya Zhilina ◽  
Татьяна Мошкова ◽  
Tat'yana Moshkova ◽  
Сергей Роменский ◽  
...  
Keyword(s):  
Information Technology ◽  
Three Dimensional ◽  
Connected Components ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Technological Documentation ◽  
Projection Images

This article describes one of the ways to solve the problem of recognizing the components of the image connectivity in the drawing field in the problem of synthesizing a three-dimensional model. This task is a fragment of the information technology of processing archives of drawing, design and technological documentation on paper.

scholarly journals Analysis of Visualization Technology of 3D Spatial Geographic Information System

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Jiudong Yang ◽  
Fenghua Wu ◽  
Erlong Lai ◽  
Mingyue Liu ◽  
Bo Liu ◽  
...  
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Data Processing ◽  
Optimization Algorithm ◽  
Spatial Data ◽  
Three Dimensional ◽  
Geographic Information ◽  
3D Gis ◽  
Visualization Technology ◽  
Spatial Data Processing

Traditional urban planning is generally expressed in a two-dimensional geographic information system, but its performance is limited to the plane direction. It cannot give people more natural feelings and visionary experiences. The rapid development of three-dimensional geographic information systems brings people geographic information. The three-dimensional intuitive experience, but the traditional three-dimensional geographic information system has the disadvantages that the spatial properties are incompatible, the image rendering speed is slow, and the visualization effect is poor. In this paper, the traditional domain-oriented processing method is improved in spatial data processing and modeling. An optimized object-oriented optimization algorithm is proposed. The three-dimensional geographic information is optimized based on a dynamic multiresolution model and multilevel detail processing technology. The rendering of the system enhances the visualization. Based on the optimization algorithm of data processing and visualization technology proposed in this paper, the spatial data processing platform GISdata of 3D GIS is designed in this paper. At the same time, the 3D GIS is visualized based on OpenGL visualization software. It is shown that the optimization algorithm proposed in this paper has excellent preexperimental effects.

A Three-Dimensional Model of Surface Asperities Developed Using Moment Theory

1982 ◽  
Vol 104 (4) ◽  
pp. 343-348 ◽  
Author(s):  
W. R. DeVries
Keyword(s):  
Three Dimensional ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Moment Theory ◽  
Composite Surface ◽  
Locus Equation ◽  
Asperity Model ◽  
The Moment

Methods are presented to construct a three-dimensional model of a composite surface asperity based on profile measurements taken in different directions. The theory used to accomplish this is based on least squares estimation to find a locus equation for the moment properties measured experimentally in five directions. The asperity model is developed based on this locus of moment properties of height and slope, which are used to interpolate in different directions to generate the base and sides of an asperity. Two examples are used to show how these techniques can be used. One is a face milled cast iron surface and the other a surface ground specimen of low carbon steel.

Implementation of Urban 3D Geographic Information System

2014 ◽  
Vol 926-930 ◽  
pp. 721-724
Author(s):  
Zhao Zhong Gao ◽  
Hai Xia Wei
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Urban Planning ◽  
Information Management ◽  
Spatial Data ◽  
Spatial Information ◽  
Three Dimensional ◽  
Geographic Information ◽  
Urban Construction ◽  
Depth Analysis

With the digital development of city construction, the construction of three-dimensional Geographic Information System plays an important role for the urban construction planning and decision-making. 3D urban planning geographic information management systems need to be able to put different spatial data, information of urban construction, urban planning information into the same platform. The integration of information resources whick provids a variety of spatial information based on the intelligent application services is the core. This article puts urban planning geographic information management related to business needs in-depth analysis, and put forward a three-dimensional geographic information model which is used for integrated management of data and can be dynamically adjusted for urban planning and management of business processes.

scholarly journals University Management System Based On BIM-GIS-Technologies

2020 ◽  
pp. short26-1-short26-9
Author(s):  
Tatiana Tomchinskaya ◽  
Maria Galanina
Keyword(s):  
Information System ◽  
Data Exchange ◽  
Three Dimensional ◽  
Digital Terrain Model ◽  
University Management ◽  
Three Dimensional Model ◽  
Terrain Model ◽  
Gis Technologies ◽  
Digital Terrain ◽  
The University

The work has an information system developed based on GIS and BIM technologies. The component of the geographic information system of the Nizhny Novgorod State Technical University n. a. R.E. Alekseev - information model of the NSTU, built in the REVIT tool environment. The models include a digital terrain model, a three-dimensional model of the educational building and utilities, a library of materials. The features and technology of creating external models of the university are considered. The project is intended for administrative and economic services of the university, decision support for engineering, and economic services. The information system implemented within the framework of this technology will make it possible to determine the optimal parameters for the operation of a building throughout its entire life cycle and take into account aspects such as meeting legal, environmental, and operational requirements. The unique integration of BIM and GIS technologies implements the apparatus for data exchange between BIM and GIS components.

scholarly journals MOBILE LASER SCANNING IN HIGHLY URBANIZED AREA – A CASE STUDY IN SOFIA

2020 ◽  
Vol XLIV-4/W2-2020 ◽  
pp. 29-36
Author(s):  
C. Mickrenska-Cherneva ◽  
A. Alexandrov
Keyword(s):  
Data Acquisition ◽  
Spatial Data ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Building Structures ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Existing Building ◽  
Master Thesis ◽  
High Level

Abstract. The paper examines the possibility to create a three-dimensional model of cadastral objects – cadastral parcels and buildings, exploring different spatial data acquisition technologies. Four cadastral parcel and part of the buildings situated in them are selected for the range of the task. Self-contained objects located in buildings have not been examined. The objects are located on the territory of Lozenets District, Sofia, which is highly urbanized part of the capital. In order to create a three-dimensional model, classical land surveying measurements with a total station and mobile laser scanning were performed.In addition, the acquired data is assessed. It is made by comparing measurements of the building to the measurements of the registered point cloud. The assessment results show that the mobile laser scanning technology is efficient to reproduce high quality and accurate data for existing building structures due to MLS advantages – the large range, high accuracy, fast data acquisition and high level of detail.The paper is a part of Alexander Alexandrov master thesis.

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