Development of 3D city model applying cadastral information

Problems of development of 3D city models are analysed. To develop such kind of model a great amount of information has to be computed. Collecting and matching the initial data is the most time and labour consuming job. Therefore first of all we have tried to investigate such a data source that would comprise the biggest part of needed data. We also have been looking for the data source that enabled us to constantly refresh and present the data describing the real or true to life situation. We have analysed the possibilities of city cadastral information system and here we state that it is suitable for that purpose. This article presents the idea how 3D city model consisting of prismatic building block models could be developed with the help of available cadastral information. Article in English Miesto 3D modelio kūrimas taikant kadastro informaciją Santrauka. Nagrinėjamos miesto erdvinio modelio kūrimo problemos. Kuriant tokį modelį reikia apdoroti labai didelius informacijos kiekius. Daugiausia laiko ir jėgų įdedama pradiniams duomenims surinkti ir suderinti tarpusavyje. Del šios priežasties pirmiausia buvo ieškoma tokio duomenu šaltinio, kuriame jau būtu sukaupta didesnė dalis reikalingų duomenų. Pradinių duomenų šaltiniui buvo keliamas patikimumo reikalavimas. Straipsnyje pateikiama idėją, kaip miesto 3D modelis gali būti kuriamas taikant kadastro informaciją

Computer Aided Design Examples

This book is designed for students to help fulfil laboratory tasks on Engineering and Computer Graphics course. Four tasks are presented – 2D drawing, 3D solid modelling, automation of orthographical projections and 3D surface modelling. This book is predestinated for students of Business Management, Environmental Engineering, Electronics faculties, but is also suitable for students of other faculties

Representation and modelling of 3D objects in different CAD systems

This paper deals with problems that are related to representation and modelling of 3D objects in different engineering areas. Surface-based and volume-based models aer commonly used in CAD systems, but another types of models are also important in nowadays engineering because they provide new possiblities for solving engineering problems

The Impact of Computer Intelligence on the Models of Constructions’ Design

Most building constructions made of various materials are assembled from standard items (reinforcement bars, steel profiles or wooden products). Their dimensions and shapes are known, therefore, the process can be formalized. This enables automation of many actions, as well as direct data transfer from a standard or catalogue into commands, which can be used in the process of project development and control. However, the existing standards of ferroconcrete reinforcement are presented in an unstructured form and cannot be used directly in computer science. The rational computer-aided application could be provided only on condition that the data would be structured and formalized in advance, which enables transformation of textual recommendations into digital models and commands. The paper addresses the problem of modelling of this process, which could enable the application of information technologies to using the data of the standards based on the abilities provided by computer intelligence

Apie gėlėtą staltiesę ir XIX amžiaus fotografijos kompiuterinę vaizdo analizę

The paper introduces some peculiarities of the analysis of the photographic image which emerged in the process of the investigation and preparation for publication of the album of prelate Povilas Januševičius’ the end of 19th – beginning of 20th century. Miscellaneous analysis of photograph image is presented. It also introduces how problems of photograph dating could be solved by combining insights of investigator as well as application of information technology. Among other things a technological study is being presented in which similarity of flowered tablecloth was analysed in different photographs. Up-to-date programs for processing and analyzing images open up completely new possibilities leading to automatic recognition and identification of objects, symbols and faces

Miesto parkų efektyvaus projektavimo modeliavimas

Modelling of efficient city park design The design of urban parks is a complicated and intensive process. Structural design modelling and management is needed which can be efficiently realized using information technologies to reach the required results allowing to satisfy not only the demands of all groups of interest, but also aesthetical, ecological, town planning and the like requirements. Currently systems used for urban park design (GIS, landscape planning, visualization systems) can fulfil tasks which are given only by a designer. In order to use these systems more efficiently it is advisable to create an integrated design system which can incorporate design and database systems. To develop such an integrated system a model of intelligent park design should be created for transfering part of analytical work to computer, when the available data, design criterion and requirements of all groups of interest are estimated. A scheme of the basic structure of an integrated design system and some more detailed stages of design are presented in the paper. Article in Lithuanian. Santrauka. Parkas labai svarbus ekonominis, socialinis, kultūrinis miesto plėtros veiksnys. Miesto parko yra projektavimas sudėtingas ir imlus procesas. Būtinas sisteminis projektavimo modeliavimas ir valdymas, kuris yra efektyvus taikant informacines technologijas. Projektuojant parkus būtina atsižvelgti į įvairių suinteresuotų grupių poreikius, taip pat į estetinius, architektūrinius, ekologinius, ekonominius reikalavimus. S˘iuo metu projektuojant parkus taikomos įvairios informacinės technologijos - geoinformacinės sistemos, kompiuterinio projektavimo ir grafinės sistemos, duomenų bazių valdymo sistemos. Tikslinga kurti integruotas parkų projektavimo ir valdymo sistemas, kurios jungtų projektavimo, duomenų valdymo, žinių sistemas į vieną branduolį, leidžiantį taikyti intelektinį parko ir infrastruktūros projektavimą ir valdymą. Reikšminiai žodžiai: miesto parkai, informacinės technologijos, kompiuterinis projektavimas, integruotos sistemos, geoinformacinės sistemos, vizualizavimas. First Published Online: 21 May 201

Peculiarities of geometrical drawing in contemporary engineering graphics

So far computer educational engineering graphics has been using not all its possibilities , because it is based on obsolete visualization methods. Formation of a new conception and technology is based on two conditions: (1) the requirements and tasks have changed in computing, so the studying of traditional methods became useless, because those methods are not used in real life; (2) the possibilities of graphics have also changed. The automatic analysis of computer drawing is possible nowadays, that was impossible using traditional technologies. Besides, additional engineering information can be attached to computer drawing. Consequently, graphical content gains essentially new informative possibilities. The new outlook of graphics should be rebuilt injustice to positive aspects of traditional things and new possibilities of information technologies. This task can be solved by modelling information engineering graphics (IEG) and all its component parts. In VGTU an IEG model is evolved, which include a common and a special part. The common IEG part includes information geometric drawing, surface and volumetric modelling, interactive and automatic generation and/or modelling of projections and information building drawing fundamentals. The models of information geometrical drawing are presented in this paper. Those models are the foundation of2D graphics

Internet Adaptation for Colour-Blind Persons

Of all human race about 8% of males and 0,5% of females are colour-blind. It is estimated that in 2011 or 2012 there will be around 2 billion Internet users worldwide, so the number of colour-blind Internet users can reach about 200 million. Authors of this publication analyse issues that arise for colour-blind persons on the Internet and deliver the ways to make the Internet more comfortable. The special software is proposed as one of the ways together with comparison of its advantages

The Residence plot selection model for family house in Vilnius by neutrosophic WASPAS method

Good quality dwelling and the environment are related to the values of citizens’ existence. It can be highlighted as important questions in creating a sustainable living environment. The research and analysis carried out so far include global planning of the plot of a particular country or city according to economic aspects. Meanwhile, our model, which covers the key social aspects of choosing a residential house, will fill this gap. We propose an original problem formulated which includes the planning of the plot of a particular city according to economic, environmental and social aspects. Our work aims to investigate the criteria for the selection of single-family houses and to develop a theoretical evaluation model based on decision-making methods. The presented study deals with the problem of selecting a one-family house plot using the Weighted Aggregate Sum Product Assessment Methods (WASPAS) and the Step-Wise Weight Assessment Ratio Analysis Method (SWARA). During the research, parameters related to plot selection were evaluated: infrastructure, distance, cost, privacy, security and aesthetic view