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Search results for: skaner 3d
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Analysis of the objects images on the sea using Dempster-Shafer Theory
PublicationThe paper presents the concept of using aerial and satellite imagery or images coming from the marine radar to identify and track vessels at sea. The acquired data were subjected to a highly advanced image analysis. The development of remote sensing techniques allows to gain a huge amount of data. These data are useful information source however usually we have to use different data mining methods to gain interested information....
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Emulator and simulator of Terma SCANTER and ARPA radar data server
PublicationThe software solutions presented in this paper generate real-time data compatible with ARPA radar standard as well as Terma SCANTER 2001 radar cooperating with Video Distribution and Tracking (VDT) server. Two different approaches to this problem are considered: emulation based on the data captured from real devices and simulation of objects on the sea. For both of them architecture, implementation details and functional test results...
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Cobalt(II) tri-tert-butoxysilanethiolates with bidentate spacer ligands
PublicationOtrzymano szereg nowych tri-tert-butoksysilanotiolanów Co(II) z dwudonorowymi N,N'-ligandami takimi jak pirazyna, chinoksalina i 4,4'-bipy. W przypadku pirazyny i chinoksaliny otrzymane kompleksy są bimetaliczne, w których atomy metali połączone są odpowiednią aminą. Użyty do syntezy 4,4'-bipy pozwolił na otrzymanie dwóch odmian polimorficznych kompleksu {[Co{SSi(tBuO)3}2]2(μ-4,4'bipy)}, a także polimeru koordynacyjnego o wzorze...
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Skażenie wód podziemnych substancjami ropopochodnymi - problematyka usuwania skażeń.
PublicationOmówiono problematykę związaną z usuwaniem skażeń powstałych w wyniku przedostania się olejowych rozlewów powierzchniowych do wód podziemnych. Określono zasady doboru urządzenia pompowego i ustalenia metody postępowania podczas procesu pompowania oczyszczającego. Zamieszczono schematy ilustrujące mechanizm powstawania leju depresyjnego i wpływ jego położenia na skuteczność oczyszczania. Dodano uwagi wynikające z doświadczeń...
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Metoda wizualizacji 3D w standardzie OpenGL obiektów bliskiego zasięgu = The 3D visualization method of close range objects in the OpenGL standard
PublicationPrezentacja możliwości dotyczących wykorzystania autorskiej aplikacji ''3D VISUALIZATION'' w badaniach i analizach obiektów modelowanych z wykorzystaniem metod fotogrametrii bliskiego zasięgu.
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3d imaging software tools for multibeam sonar data
PublicationArtykuł porusza problem trójwymiarowej wizualizacji dna morskiego na podstawie danych pochodzących z systemu wielowiązkowego. W prezentowanym systemie wykorzystano trzy technologie programistyczne do wytwarzania grafiki 3D (C++ OpenGL, Java 3D, Java OpenGL). W artykule przedstawiono problemy, na które natknięto się podczas tworzenia systemu coraz omówiono sposoby ich rozwiązywania.
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Zastosowanie Grafiki 3D do wizualizacji dna morskiego
PublicationTechnologie do wytwarzanie grafiki 3D to dynamicznie rozwijająca się gałąź przemysłu informatycznego. Znajdują one zastosowanie nie tylko przy tworzeniu gier komputerowych, ale coraz częściej są wykorzystywane w systemach trjwymiarowej wizualizacji danych pomiarowych.
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3D imaging of nuclear reactions using GEM TPC
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Preparation and characterization of 3D collagen materials with magnetic properties
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Representative volume element in 2D for disks and in 3D for balls
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Evaluation of suitability for 3D printing of high performance concretes
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Thermo-mechanic tests using 3d printed elements
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Electrochemicalsynthesis of 3D nano-/micro-structured porous polypyrrole
PublicationIn this work, electrosynthesis of electroactive, 3D nano-/micro-structured porous polypyrrole film is presented. The PPy film was synthesized potentiostatically in a one-step process from aqueous solution of pyrrole and lithium perchlorate. The growth mechanism of such structure included: the formation of typical globular PPy film, followed by the formation of the PPy fibers, which then took part in the formation of 3D highly porous...
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3D polypyrrole structures as a sensing material for glucose detection
PublicationIn this work, 3D polypyrrole (PPy) structures as material for glucose detection is proposed. Polypyrrole was electrochemically polymerized on platinum screen-printed electrode from an aqueous solution of lithium perchlorate and pyrrole. The growth mechanism of such PPy structures was studied by ex-situ scanning electron microscopy. Preliminary studies show that studied here PPy film is a good candidate as a sensing material for...
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Design of modified PID controllers for 3D crane control
PublicationFrom the control viewpoint, 3D crane is a dynamic, nonlinear and multidimensional electromechanical system. In this paper, five control systems using a set-point weighted PID controllers (modified controllers) are designed. These structures and properties are presented. Optimization process of controllers settings based on integral performance indices is made. Simulation tests of control systems are presented. Comparison of integral...
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3D Acoustic Field Intensity Probe Design and Measurements
PublicationThe aim of this paper is two-fold. First, some basic notions on acoustic field intensity and its measurement are shortly recalled. Then, the equipment and the measurement procedure used in the sound intensity in the performed research study are described. The second goal is to present details of the design of the engineered 3D intensity probe, as well as the algorithms developed and applied for that purpose. Results of the intensity...
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Multibeam data processing for 3D object shape reconstruction
PublicationThe technology of hydroacoustic scanning offers an efficient and widely-used source of geospatial information regarding underwater environments, providing measurement data which usually have the structure of irregular groups of points known as point clouds. Since this data model has known disadvantages, a different form of representation based on representing surfaces with simple geometric structures, such as edges and facets,...
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Visualization of Spatial Issues in Adobe Acrobat 3D PDF
PublicationThe ability to capture and embed model information in a 3D PDF file and subsequently share it for free is highly needed in the education of descriptive geometry. The described technology and in particular inserting 3D models into the other files can improve the existing teaching materials. The strongest point of 3D PDF technology is that the model can be visualized and manipulated in multiple ways by viewers which enhance the...
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3D porous graphene-based structures- synthesis and applications
PublicationPorous carbon-based materials are of the great industrial and academic interest due to their high surface area, low density, good electrical conductivity, chemical inertness and low cost of fabrication. Up to now, the main approach to obtain porous carbon structures has involved the pyrolysis of carbonaceous natural or synthetic precursors. After the isolation of graphene, the interest in 3D porous graphene-based structures (called...
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3D Metamaterial Ultra-Wideband Absorber for curved surface
PublicationThis paper proposes a three-dimensional metamaterial absorber based on a resistive film patch array to develop a low-cost, lightweight absorber for curved surfaces. An excellent absorption over a large frequency band is achieved through two different yet controllable mechanisms; In the first mechanism, a considerable attenuation in the wave power is achieved via graphite resistive films. The absorption is then intensified through...
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Parametrical 3D model of an asynchronous motor - AutoCAD application.
PublicationA computer program for automatic drawing of 3D models of squirrel-cage induction motors is presented in this paper. The created model of a machine is of parametrical nature, which means that the user defines geometry of particular elements (shaft, stator core, bearing, windings etc.) on the basis dimensions and some other parameters e.g. type of bearing, kind of winding, number of slots. This program is useful for 3D modelling...
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Flow models 1D, 2D, 3D for diagonal pump
PublicationTrzy typowe modele stosowane w maszynach wirnikowych 1D, 2D, 3D zostały przedstawione w zastosowaniu do przepływu w pompie diagonalnej. W ramach modelu 1D przedstawiono prezentację procesu na wykresie energia -straty. W ramach modelu 2D pokazano wynik rozwiązania zadania odwrotnego prowadzącego do kształtu łopatek wirnika pompy. W ramach modelu 3D wykonano obliczenia programem FLUENT pokazując charakterystyczne cechy dwóch różnie...
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3D reconstruction seafloor from side-scan records
PublicationArtykuł przedstawia sposób wykorzystania języka opisu wirtualnej rzeczywistości (VRML) do trójwymiarowej wizualizacji dna morskiego. W szczególności zaprezentowano techniki rekonstrukcji trójwymiarowego obrazu z danych pochodzących z sonaru bocznego.
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3D DEM simulations of fracture in reinforced concrete beams
PublicationArtykuł dotyczy zachowania się belki żelbetowej bez zbrojenia pionowego przy trzypunktowym zginaniu. Belka uległa zniszczeniu wskutek ścinania z powodu obecności nadmiernego zbrojenia podłużnego. Eksperymenty przeprowadzono w skali laboratoryjnej z wykorzystaniem systemu mikro-CT, a następnie odtworzono je w analizach numerycznych stosując metodą elementów dyskretnych 3D (DEM). Zastosowano 4-fazowy model betonu z mezostrukturą,...
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Współczesne badania nad stanem środowiska i leczniczym wykorzystaniem roślin
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Measurement of luminance and color uniformity of displays using the large-format scanner
PublicationUniformity of display luminance and color is important for comfort and good perception of the information presented on the display. Although display technology has developed and improved a lot over the past years, different types of displays still present a challenge in selected applications, e.g. in medical use or in case of multi-screen installations. A simplified 9-point method of determining uniformity does not always produce...
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Using Dempster-Shafer approach to support reasoning about trust in IT infrastructures
PublicationW artykule przedstawiono zastosowanie podejścia Dempstera-Shafera do do wnioskowania o poziomie zaufania do infrastruktur TI.
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Reconstruction of 3D structure of positive corona streamer by local methods
PublicationThe computer algorithms were used for reconstruction of streamer 3D structure. We propose the 3D tree structure model of corona discharge streamer composed with nodes and edges between chosen couples of nodes, which enables easy computation of some important parameters ofstreamers. The 3D model can be derived directly from two projection images by global methods like evolutionary searching or particle simulations. In this paper...
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RATIONALE FOR THE INTRODUCTION OF 3D CADASTRE AS ILLUSTRATED WITH THE EXAMPLE OF THE CITY OF KRAKÓW
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Properties of Composite Modified with Limestone Powder for 3D Concrete Printing
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An Overview on Materials and Techniques in 3D Bioprinting Toward Biomedical Application
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1D Model Callibration on the Basis on 3D calculations for Tesla Turbine
PublicationThe paper presents the system of equations for axisymmetriclaminar flow, after averaging, through the width of interdisk slit ofTesla turbine. Coefficients were introduced, as a result ofaveraging, that improve the efficiency of 1D model. The minimalnumber of such coefficients was determined. The 1D modelmakes it possible to attain analytical solutions to an accuracylimited by these coefficients. Calibration of 1D model depends...
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A Method and Device for 3D Recognition of Cutting Edge Micro Geometry
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Modeling 3D Objects for Navigation Purposes Using Laser Scanning
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Diagnostyka nakładek stykowych z wykorzystaniem systemu wizyjnego 3D
PublicationKolejowe pojazdy szynowe są szczególnym typem ruchomych odbiorników energii elektrycznej. Zasilane są one zazwyczaj z górnej sieci jezdnej za pośrednictwem odbieraka prądu, zainstalowanego na dachu pojazdu. Istotnym elementem odbieraka jest ślizgacz, zawierający najczęściej dwie nakładki stykowe. Odbiór prądu zapewniony jest przez ruchomy zestyk pomiędzy przewodem jezdnym a nakładkami stykowymi. Poprawny odbiór prądu uwarunkowany...
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Laserowa modyfikacja treści i nanonieporozumienia drukowane w 3D
PublicationW obliczu wielkich wyzwań naukowych zapomina się czasem o drobnych niedopowiedzeniach, które mogą zaważyć na wyniku całego badania. Szeroka współpraca, zwłaszcza interdyscyplinarna, jest niezbędna do osiągnięcia sukcesu, ale bywa również przyczyną powstawania nieporozumień i formułowania błędnych założeń technicznych. Nadużywanie modnych słów kluczowych może doprowadzić do szeregu nieporozumień i wyciągania fałszywych wniosków...
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Integration, Processing and Dissemination of LiDAR Data in a 3D Web-GIS
PublicationThe rapid increase in applications of Light Detection and Ranging (LiDAR) scanners, followed by the development of various methods that are dedicated for survey data processing, visualization, and dissemination constituted the need of new open standards for storage and online distribution of collected three-dimensional data. However, over a decade of research in the area has resulted in a number of incompatible solutions that offer...
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THE 3D MODEL OF WATER SUPPLY NETWORK WITH APPLICATION OF THE ELEVATION DATA
Publication3D visualization is a key element of research and analysis and as the source used by experts in various fields e.g.: experts from water and sewage systems. The aim of this study was to visualize in three-dimensional space model of water supply network with relief. The path of technological development of GESUT data (Geodezyjna Ewidencja Sieci Uzbrojenia Terenu – geodetic records of public utilities) for water supply and measurement...
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Web-based 3D processing and dissemination of multibeam sonar data
PublicationThe continuous detailed surveys of the various water bodies over time produce a large and ever-increasing volume and density of underwater sounding data. Three-dimensional data, such as those obtained by multibeam sonar systems, are quite complex to manage, and thus their growing numbers increase the pressure on development of new solutions dedicated to processing them. This paper presents a concept system for web-based dissemination...
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Effect of mesh deformation on the accuracy of 3D FEM electromagnetic analysis
PublicationIn this paper, the accuracy of 3D FEM electromagnetic simulations in parametric analysis using mesh deformation techniques is discussed. Mesh deformation techniques allow one to preserve the mesh topology while the geometry is changed. It is shown that the application of mesh deformation can provide accurate simulation results even for very large deformations. On the other hand, it is also shown that the technique has to be used...
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3D scanning system for railway current collector contact strips
PublicationUndisturbed collection of current from a contact wire of the catenary constitutes one of the basic elements in reliable operation of electrified rail transport, particularly when vehicles move at high speed. Quality of current collection is influenced by the construction of catenary and current collectors, as well as by the technical condition and regulation of these two elements. Total contact force of a current collector head...
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Optymalizacja nastaw regulatorów PID do sterowania suwnicą 3D
PublicationSuwnica stanowi ciekawy, a zarazem skomplikowany obiekt sterowania, który znajduje zastosowanie w różnych gałęziach przemysłu. W artykule przedstawiono obiekt sterowania wraz jego układami sterowania wykorzystującymi regulatory PID. Następnie dobrano parametry regulatorów wybranymi metodami inżynierskimi i optymalizacyjnymi. Przeprowadzono szczegółową analizę porównawczą zaproponowanych rozwiązań.
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Numerical modelling of 3D printout using line (1D) elements
PublicationA proposition of some numerical modelling of the 3D printout is presented in the paper. The proposed model is composed of some 1D elements. The resulting numerical model of the infill consist of beam, spring and rigid elements. Obtained results confirm correctness of the proposed modelling method. Two methods of estimation of the spring parameters are proposed in the paper. In the first method, mechanical properties of the connecting...
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3D Imaging Of Underwater Objects Using Multi-Beam Data
PublicationOne of the main applications of multibeam sonars is high resolution bathymetry measurement, as well as detecting and imaging of underwater objects like shipwrecks. In order to obtain the visualisation quality good enough to allow the researcher to investigate an object in more detail, the approach relying on construction of three-dimensional model of an imaged object, e.g. consisting of nodes, edges and plane elements (facets)...
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A Method and Device for 3D Recognition of Cutting Edge Micro Geometry
PublicationA very useful method was successfully applied in the investigation of tools for machining wood and wood based composites. It allows scanning of the cutting edge micro geometry in three dimensions and reproducing it in a virtual space as a 3D surface. The application of the method opens new possibilities of studying tool wear by scanning, including the calculation of volume loss and other analysis of tool wedge geometry along and...
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Selected Aspects of 3D Printing for Emergency Replacement of Structural Elements
PublicationThe paper presents a synthetic characterization of modern methods of manufacturing or regenerating machine elements. Considered methods are machining and additive methods, in particular 3D printing in the FDM/FFF technique. For the study, the authors made samples of the holder bracket using selected methods. Samples made by machining operations, 3D printing with various filling were tested. The paper contains a technical and economic...
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Analiza obrazu 3D do oceny zużycia nakładek ślizgowych
PublicationZ punktu widzenia niezawodności eksploatacyjnej transportu kolejowego, istotnym czynnikiem jest stan powierzchni grafitowych nakładek ślizgowych trakcyjnych odbieraków prądu. Zaproponowane przez autorów nowatorskie stanowisko pomiarowe, oparte na systemie wizyjnym z kamerą 3D, umożliwia rejestrację powierzchni nakładek ślizgowych przejeżdżających lokomotyw. Stanowisko zamontowano i uruchomiono na torze kolejowym. W czasie eksploatacji...
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Stanowisko do skanowania 3D nakładek odbieraków prądu lokomotyw
PublicationPrawidłowy odbiór prądu z sieci jezdnej trakcji elektrycznej jest jednym z podstawowych elementów niezawodnego funkcjonowania zelektryfikowanego transportu szynowego, zwłaszcza przy dużych prędkościach jazdy. Na jakość odbioru prądu wpływa konstrukcja sieci jezdnej i odbieraków prądu oraz stan techniczny i regulacja tych dwóch elementów. O jakości współpracy odbieraka prądu z siecią jezdną zasadniczo decydują: nacisk odbieraka...
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Wykorzystanie rachunku niecałkowitego rzędu w sterowaniu suwnicą 3D
PublicationSuwnica 3D jest obiektem stosowanym w różnych gałęziach przemysłu. Z punktu widzenia sterowania, jest to system dynamiczny, nieliniowy i wielowymiarowy. W artykule zaprojektowano dwa układy regulacji: z klasycznym regulatorem PID oraz z regulatorem PID ułamkowego rzędu. Przedstawiono analizę porównawczą zaprojektowanych układów regulacji.
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Electromagnetic Simulation with 3D FEM for Design Automation in 5G Era
PublicationElectromagnetic simulation and electronic design automation (EDA) play an important role in the design of 5G antennas and radio chips. The simulation challenges include electromagnetic effects and long simulation time and this paper focuses on simulation software based on finite-element method (FEM). The state-of-the-art EDA software using novel computational techniques based on FEM can not only accelerate numerical analysis, but...