Wyniki wyszukiwania - Biblioteka Nauki

1

Rola edukacji artystycznej w kształceniu grafika komputerowego

100%

Królikowski H.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Elektryka

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2005

|

tom Z. 43

257-259

PL

Każde zjawisko można przeżywać w dwojaki sposób - wewnętrznie i zewnętrznie. Chodzi o to, że wiedza o formie plastycznej ma za zadanie nauczyć informatyków rozumienia przez patrzenie - czyli wewnętrznego rozumienia sztuki wizualnej. Zostały przedstawione również 2 projekty wizytówek: jeden wykonany przez osobę bez przygotowania plastycznego, drugi wykonany na podstawie projektu studenta grafiki komputerowej.

EN

Each phenomenon we may survive in two ways - internally and extermally. The thing is that knowledge about artistic form should teach computer programmers understanding through watching - that is internally understanding visual art. This article is illustrate two projects of visiting cards: the first is made by a person without artistic preparation, the second is made on the basis of project of student of computer graphics.

2

Zarządzanie kolorem w prezentacjach internetowych

80%

Skurowski P.

Studia Informatica

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2002

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tom Vol. 23, nr 2B

171-181

PL

Technologia zarządzania kolorem stanowi standard w zapewnianiu wierności koloru w zastosowaniu technik komputerowych w przemyśle poligraficznym. Mechanizmy te znajdują w chwili obecnej zastosowanie w technikach internetowych. Artykuł omawia podstawy technologii zarządzania kolorem oraz opisuje szczegółowo jej zastosowanie w obszarze publikacji HTML.

EN

The Color management technology is a standard in a color fidelity ensurance in computer techniques applied for printing industry. At the moment this technology is being applied to internet technologies. In the paper is briefly describesd the color managament technology and applications of one in a field of HTML publications in more details are presented.

3

Modeling and rendering of convective cumulus clouds for real-time graphics purposes

80%

Kobak P. , Alda W.

Computer Science

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2017

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tom Vol. 18 (3)

241--268

EN

The paper presents a simulation and rendering model of three dimensional covective cloud evolution. The model is physically based, however its purpose is graphical. The main stress is put on balancing two parts of a model: the atmsphere simulation with convective motion of air and water vapor combined with rendering of semi-transparent and light-scattering clouds, in order to achieve realistic animation in real-time. We examine and compare two algorithmic approaches based on CPU and GPU computations.

4

Selected Examples of Applications of New Graphics and Animation Technologies

80%

Filutowicz Z. , Przybyszewski K. , Paszkowski J.

Journal of Applied Computer Science Methods

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2016

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tom Vol. 8 No. 1

29--40

EN

In recent years there has been a marked increase in the competitiveness of some very interesting (user) applications software within the field of computer graphics and animation. This paper presents an analysis of selected examples of the use of graphic applications software designed for professional use within various areas of human activity, and also focusses on the potential for further development of this software. Graphic applications software that makes use of motion capture, performance capture, time-lapse, morphing, Augmented Reality and the use of avatars in human-computer communication has become increasingly popular, cheap and simple.

5

A new topology-based watermarking method for layered 3D triangular mesh models

80%

Rahman M. , Kaneda K. , Harada K.

Machine Graphics and Vision

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2005

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tom Vol. 14, No. 4

427-439

EN

A new topology-based watermarking method is proposed to embed information in objects with layered 3D triangular meshes such as those reconstructed from CT or MRI data. The main idea of the method is to compare the heights of the vertices of a triangle lying in the same layer. A watermark message is converted into a binary bit sequence, and then embedded into the modelin such a way that the first vertex of a triangle in the upper level carries information 1, and the first vertex of a triangle in the lower level carries information 0. For experimental purposes, a watermark message is embedded in a mouse embryo model. It is robust against translation, rotation, re-sectioning, local deformation and scaling. It left some artifacts after re-arrangement of local or global numbering. It is useful for shape sensitive 3D geometric models.

6

Symulacja obróbki korpusu silnika gwiazdowego przy wykorzystaniu programu Unigraphics NX5

80%

Penkała P.

Pomiary Automatyka Robotyka

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2010

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tom R. 14, nr 2

150-158

PL

Rozwój technik komputerowych, jaki dokonał się w ostatnich trzech dekadach, umożliwił powstanie zaawansowanych programów do tworzenia profesjonalnej dokumentacji technicznej. Rozpoczął się proces zastępowania konwencjonalnych, ręcznych technik rysowania znacznie bardziej efektywnymi technikami grafiki komputerowej. Ogromny wzrost wydajności i dostępności komputerów, jaki dokonał się w ostatnich kilku latach, przyczynił się do powstania nowej kategorii aplikacji programów do modelowania 3D. Przy użyciu tego oprogramowania projektuje się z założenia trójwymiarowe obiekty, które mogą być bazą nie tylko dla tworzenia dwuwymiarowej dokumentacji technicznej, ale również punktem wyjścia do obliczeń wytrzymałościowych (np. przy zastosowaniu metody elementów skończonych), czy też do opracowania technologii obróbki i wygenerowania kodów sterujących dla obrabiarek sterowanych numerycznie przy wykorzystaniu wyspecjalizowanych samodzielnych programów CAD/CAM lub modułów technologicznych w zintegrowanych systemach przygotowania produkcji.

EN

The development of computer technology, what achievement in last three decades, to make possible come into being advanced software to create of professional technical documentation. It started process of substitute conventional drawing technology by use of importance more efficiency computer graphics. The great increase of efficiency and accessibility of computers, like performed in last some years, contributed to come into being of the new class software application to 3D modeling. By use of this software they can design three-dimensional objects, which are base not only two-dimensional technical documentation, but as well as can be use to strength calculation (FEM method). They can apply threedimensional models to work out of production technology treatment and to generate of control code for computer numerical control machine tools by use of CAD/CAM software or production models in computer integrated manufacturing systems.

7

Real-time shadow casting in virtual studio

80%

Wojdała A. , Gruszewski M. , Olech R.

Machine Graphics and Vision

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2000

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tom Vol. 9, No. 1/2

315-329

EN

Combining real and computer-generated imaginery, Visual Studio imposes the requirement for these two worlds to interact properly in the composite image. In particular, it is expected that shadows will be correctly cast between the virtual and real environments. This paper describes real-time algoriths, that allow actors and real object to cast shadows on virtual elements of the scene and vice versa.

8

Interactive Hydraulic Erosion Using CUDA

80%

Bezin R. , Peyrat A. , Crespin B. , Terraz O. , Skapin X. , Meseure P.

Machine Graphics and Vision

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2011

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tom Vol. 20, No. 2

157-172

EN

This paper presents a method to simulate in real-time hydraulic erosion and sedimentation on a 3D soil represented by a triangular mesh. Applications include user-assisted terrain generation for computer-generated films and reverse engineering for geology. Our method achieves interactive performances by dynamically displacing vertices using CUDA and following physically-inspired principles to simulate realistic water streams and their interaction with soil and sediments. The mesh is generated in a preprocessing step to avoid degenerate cases in highly deformed areas. We present various results where landforms are progressively eroded to create visually plausible river beds.

9

Helped by computer woven structure`s designing

80%

Masajtis J.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

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2000

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tom z. 58

241-248

EN

Designing of fabrics is area, which began to be developed in remote times, earlier than 5 thousand years before Christ's. In long time woven products were, simply, designed and created on handlooms, using skills developed in practice and transferred from generations to generation. Sometimes this kind of a skill is a characteristic feature of communities or families. An essential challenge appeared at the beginning of 19 century. It was seen also in development of methods concemed with woven fabrics designing process, when the basic purposes of the process is to get woven structure with desirable features or properties. In those days practical experience and tradition of craftsman families were not enough to obtain textiles of best quality and features. A first mathematical description of woven structure appeared. Simultaneously, experimental works were conducted making possible detecting of phenomenon, of regularities appearing in creating of useful textiles properties. It allowed to foresee various, selected features oftextiles in more conscious way. It would shorten a time between intention and realization of designed object.

10

Teaching computer graphics at Faculty of Mining and Geology

80%

Polacek J.

Journal Biuletyn of Polish Society for Geometry and Engineering Graphics

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2000

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tom Vol. 10

50

PL

Autor omawia zakres i program przedmiotu grafika komputerowa, realizowany na Wydziale Górnictwa i Geologii Uniwersytetu Technicznego (VŠB) w Ostrawie.

11

Reduced data for curve modeling – applications in graphics, computer vision and physics

80%

Janik M. , Kozera R. , Kozioł P.

Advances in Science and Technology. Research Journal

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2013

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tom Vol. 7, nr 18

28--35

EN

In this paper we consider the problem of modeling curves in R n via interpolation with out apriori specified interpolation knots. We discuss two approaches to estimate missing knots{ti}mi=0 for non-parametric data(i.e.collection of points {qi}mi=0, where qiRn). The first approach (uniforme valuation) is based on blind guess in which knots {ˆti}mi=0 are chosen uniformly. The second approach (cumulative chord parameterization), incorporates the geometry of the distribution of data points.More precisely the difference ˆti+1−ˆti is equal to the Euclidean distance between data points qi+1 and qi. The second method partially compensates for the loss of the information carried by the reduced data. We also present the application of the above schemes for fitting non-parametric data in computer graphics (light-source motion rendering),in computer vision (image segmentation)and in physics (high velocity particles trajectory modeling).Though experiments are conducted for points in R2 and R3 the entire method is equally applicable in Rn.

12

Application of Geometric Simulation for Determination of Dynamic Undeformed Chip Thickness in Milling

80%

Bombiński S. , Jemielniak K.

Advances in Science and Technology. Research Journal

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2023

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tom Vol. 17, no 1

173--181

EN

Self-excited vibration is a significant constraint on productivity and production quality, which makes various forms of virtual machining widely used to find stable conditions before starting the actual machining operation. Numerical simulation of self-excited vibration, although much slower than analytical solutions, makes it possible to consider the nonlinearity of the process and its continuous variation. In 5-axis milling, predicting the instantaneous cross-sections of the uncut chip is very difficult, so geometric simulation is readily used to check the correctness of the NC program and the obtained shape of the workpiece. However, the known solutions take into consideration only programmed movements of the tool relative to the workpiece without considering vibrations, and those in which attempts have been made to consider vibrations have significant limitations. This paper uses a Geometric Simulator that determines the nominal positions of the tool relative to the workpiece, to which the displacements due to vibration, determined by the Dynamic Simulator, are added, making it possible to effectively determine the dynamic thickness of the cut layer and the trace on the workpiece material left by the vibrating tool. The use of geometric simulation, in which the material is represented by discrete voxels, introduces signal quantization, that is, the limited resolution of undeformed chip thickness and trace left on the machined surface. The paper presents the effect of voxel dimension on the accuracy of the simulation of self-excited vibrations.

13

Identifying the location of tetragons in the three-dimensional space - key issues in the field of augmented reality

70%

Bugała M.

Szybkobieżne Pojazdy Gąsienicowe

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2016

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tom nr 4 (42)

109--120

EN

The paper presents one of the methods of calculating the pose of tetragons in the three-dimensional space on the basis of coplanar two-dimensional points. In conclusion, reference is made to the effects obtained and to the possibilities of practical application of the algorithm.

14

Two new algorithms for line clipping in E² and their comparison

70%

Skala V. , Hui B. D.

Machine Graphics and Vision

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2000

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tom Vol. 9, No. 1/2

297-306

EN

New efficient algorithms for the line clipping by the given rectangle in E² are presented. The first algoritm is based on the line direction evaluation the second one is based on a new coding technique of clipping rectangle's vertices. It allows solving all cases more effectively. A comparison of the proposed algorithms with the Liang-Barsky algorithm and some experimental results are presented, too.

15

Efficient Computation of the Large Inductive Dimension Using Order- and Graph-theoretic Means

70%

Berghammer R. , Schnoor H. , Winter M.

Fundamenta Informaticae

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2020

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tom Vol. 177, nr 2

95--113

EN

Finite topological spaces and their dimensions have many applications in computer science, e.g., in digital topology, computer graphics and the analysis and synthesis of digital images. Georgiou et. al. [11] provided a polynomial algorithm for computing the covering dimension dim (X, 𝒯 ) of a finite topological space (X, 𝒯 ). In addition, they asked whether algorithms of the same complexity for computing the small inductive dimension ind (X, 𝒯 ) and the large inductive dimension Ind (X, 𝒯 ) can be developed. The first problem was solved in a previous paper [4]. Using results of the that paper, we also solve the second problem in this paper. We present a polynomial algorithm for Ind (X, 𝒯 ), so that there are now efficient algorithms for the three most important notions of a dimension in topology. Our solution reduces the computation of Ind (X, 𝒯 ), where the specialisation pre-order of (X, 𝒯 ) is taken as input, to the computation of the maximal height of a specific class of directed binary trees within the partially ordered set. For the latter an efficient algorithm is presented that is based on order- and graph-theoretic ideas. Also refinements and variants of the algorithm are discussed.

16

Fast contour tracing algorithm

70%

Kozłowski J. , Patorski K.

Optica Applicata

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2001

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tom Vol. 31, nr 3

611-618

EN

A simple and fast algorithm for contour tracing in two-level BitMap image is presented. The common comer of four neighbouring pixels, NODE, is defined as the basic element of the analysed structure. First the image is convoluted with 2*2 kernel which identifies all nodes, then the algorithm follows the line connecting contour nodes, and extracts coordinates of border pixels according to the initial conditions, i.e., to the defined connectivity type and contour rotation. The main parts of this procedure (written in C/sup ++/) and results obtained with the demonstration program KRATA, based on this algorithm, are presented.

17

АНАЛІЗ ЗАРУБІЖНОГО ДОСВІДУ ФОРМУВАННЯ РОБОЧИХ ПЛАНІВ ТА ОСВІТНІХ ПРОГРАМ ПІДГОТОВКИ ФАХІВЦІВ ІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ СПЕЦІАЛЬНОСТІ «КІБЕРБЕЗПЕКА»

70%

Матвійчук-Юдіна О.

Педагогічні науки: теорія, історія, інноваційні технології

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2017

|

nr 7(71)

3-14

EN

This article analyzes the peculiarities of the work plans and curricula development for various educational specialties in information technologies.It determines the modern methods of formation of the professional competences of specialists in qualification level of bachelor on the basis of a certain list of disciplines. Modern state and level of development of information and communication systems in Ukraine are analyzed. The problem of defining concepts and competences of bachelors of specialty «Cyber Security» is considered. The features of basic approaches to professional competences of bachelors of specialty «Cyber Security» by properties of the information system and with considering international standards and requirements are defined.These studies were conducted with the aim of comparative analysis of domestic and foreign methods and concepts of developing of the specific list of disciplines. The modern system approach to organization of the electronic educational complexes of general, professional, or free choice subjects of training future specialists in the field of information technology knowledge, specialty cybersecurity was examined.This article covers the main factors of forming competences of bachelors of specialty cybersecurity according to the world system of standardization.Different forms of illumination of competences in modern native recommendations are considered. As a result of research we can draw the following conclusion that in the existing programs of the leading technical higher education institutions of Ukraine approaches in the formation of professional competences present directions of knowledge provision in accordance with the educational field of knowledge «Information Technologies». However, the competences, which are indicated in the knowledge programs and skills do not emphasize the difference special competencies of specialists and practically do not differ from the general competences of the specialties for various educational specialties in information technologies. Modern requirements to specialists of the IT industry in the specialty «Cyber Security» are highlighted.

18

Visuality and Narration in Monsters, Inc.

70%

Schröter J.

Acta Universitatis Sapientiae, Film and Media Studies

|

2013

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tom 7

|

nr 1

35-47

EN

The overblown rhetoric concerning the “digital revolution” conceals deep continuities between traditional and new forms. As the example Monsters, Inc. shows established forms of narration can be used together with new forms of computer generated images. The complexities of this constellation are described by an analysis of the film.

19

Computer graphics analysis : a method for arbitrary image shape description

70%

Saeed K.

Machine Graphics and Vision

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2001

|

tom Vol. 10, No. 2

185-194

EN

A concept of a new set of features suitable for describing arbitrary shapes after their thinning is presented. The features are the minimal eigenvalues of Toeplitz matrices formed from rational functions, in which the coordinates of the characteristic pixels of the shape to be described are used as coefficients, the x coordinates in the nimerator polynominal, and the y coordinates in the denominator polynominal. Each rational function has a from which makes it a general measured of image description and its features extraction. The method is introduced and appled for the first time.

20

Komputerowa wizualizacja budowy maszyn elektrycznych

60%

Pietrowski W.

Przegląd Elektrotechniczny

|

2010

|

tom R. 86, nr 4

188-191

PL

W artykule zaprezentowano trójwymiarową wizualizację konstrukcji maszyn elektrycznych. Proces tworzenia został podzielony na dwa etapy. W pierwszym etapie rysowane są pojedyncze elementy konstrukcyjne. W drugim etapie następuje złożenie elementów w jeden obiekt a następnie stworzenie animacji. Szczególna uwaga została położona na dokładne odwzorowanie każdego elementu, w tym wymiarów oraz powierzchni materiału. Uzyskane animacje komputerowe mogą znaleźć zastosowanie jako pomoc dydaktyczna na wykładach, konferencjach.

EN

In this paper the three dimensional visualization of electrical machines has been presented. The creation process has been divided into two parts. In the first technical drawings were made, and in the second animation has been produced. Special attention has been paid to proper presentation of every part of device, including dimensions and material surface. The obtained 3D animation can be used in lectures, conferences.