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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Konstrukce 3D skeneru pro výukové účely / Design of a 3D scanner for educational purposes

Paprsek, Adam January 2018 (has links)
The aim of the submitted semestral project is research of 3D scanning object methods. The 3D scans utilization and types of these scans have been mentioned in the first chapter. The scanners are grouped into two basic methods – contact and contactless. The second chapter is dedicated to 3D model measurement principles, which are described in detail in four sub-chapters. In the following chapter is described design with complete realization 3D scanner with the implementation of the application for its controlling. Last part of the thesis concerns the 3D model editing and method evaluating.
12

Výzkumný 3D skener pro účely skenování problematických povrchů / Research 3D scanner for scanning of problematic surfaces

Bátrla, Martin January 2019 (has links)
This diploma thesis deals with design of 3D scanner for scanning problematic surfaces. The research part introduces the problem of 3D scanning and describes causes of random errors. Further, it contains a description and division of methods that leads to their elimination. The practical part of the thesis deals with design and description of hardware and software parts of the 3D scanner. The output of this work is device that is able to implement and compare quality of codification methods mainly for scanning of problematic surfaces. The functionality of equipment was verified by experimental measurement.
13

Optický proximitní skener s měřením doby letu / Optical Proximity Sensor with Time-of-Flight Measuring Principle

Mlatecová, Hana January 2011 (has links)
3D optical proximity scanner is described in this thesis. The sensor is marked as 03D201 and is made by Ifm electronic, GmbH company. The text also describes the basic characteristics, measuring principle, PC connection method and communication. A program for communication between PC and sensor was created and named O3D_Application. This program provides functions for real-time data transfer and visualization. Measured data can be saved easily by this program. The thesis also contains an analysis of measured data and parasitic parameters of the sensor.
14

Využití reverzního inženýrství pro výpočty aerodynamiky automobilu / The utilization of reverse engineering in computation of vehicle aerodynamics

Rozsíval, Jan January 2008 (has links)
The vehicle body was measured by using ATOS 3D scanner. Measured data from the ATOS 3D scanner were applied to make a 3D model of vehicle body and to make a 3D model of whole vehicle by using computer program Pro/ENGINEER. The model of vehicle was made with a view for future use of CAD model. Surface of the vehicle model was used for computation of vehicle aerodynamics – aerodynamic static pressure distribution by using CFD software Star-CCM+.
15

Analýza modálních vlastností lopatkové řady s lopatkami svázanými Z-vazbou / Modal Analysis of the Blades Row Tied with Z-tie

Valoušek, Tomáš January 2014 (has links)
This thesis is about modal analysis of the rotor blades row tied with Z-tie. Thesis was solved by finite element system ANSYS. Cyclic symmetry was used in this thesis with the aim of obtain eigen frequency of bladed disc. The next aim of this thesis was to find eigen frequency of the free rotor blades and to compare it with frequency obtained from experiment. 3D model was created by 3D scanner and CAD system CATIA.
16

Měření tvaru zatížené pneumatiky / Shape Measurement of Loaded Tyre

Hlavatý, Jiří January 2015 (has links)
This thesis is focused on measuring the shape of loaded tire and finding dependencies between inner tire pressure, load and the influence of these parameters on the resulting shape of the tire. Data for these dependencies were obtained by using a constructed measuring stand and 3D optical technology. Found dependencies describe the change in shape of the tire in specific mathematical functions, and served the creation of a parametric model of the tire. The main finding of this thesis is that the tire is actually behaves according to dependencies described by varying degrees of polynomial function.
17

Plataforma de aquisição e método de análise corporal por varredura tridimensional

China, Rodrigo Teiske January 2017 (has links)
Orientador: Prof. Dr. Mario Alexandre Gazziro / Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Ciência da Computação, 2017. / Devido à disseminação de novas tecnologias de varredura (ou escaneamento) 3D, há agora a possibilidade de se realizar uma análise corporal a partir de um modelo tridimensional do paciente. Este trabalho visa criar uma plataforma de avaliação corporal semiautomática para medição de ângulos e distâncias de pontos anatômicos do corpo, juntamente com aplicações que somente informações 3D podem agregar, como a medição do volume do corpo e perímetros de seções corporais, criando-se assim um equipamento completo conhecido como scanner 3D multifuncional. Este equipamento foi construído utilizando 2 sensores Microsoft Kinect aliados à biblioteca de reconstrução ReconstructMe, uma plataforma giratória e um microcontrolador Arduino, criando uma plataforma de escaneamento e software de uso fácil e intuitivo. A plataforma desenvolvida foi utilizada em testes de análise postural de um manequim segundo o protocolo SAPO de avaliação e comparada ao software SAPO. O método de aquisição de modelos tridimensionais foi totalmente automatizado e se mostrou confiável, desde que o usuário permaneça parado durante o processo. O software para avaliações corporais, nomeado AllBodyScan3D, conseguiu reproduzir os métodos propostos e realizar uma avaliação postural de forma ainda não vista em outros trabalhos. A comparação de resultados de avaliação postural do software proposto com o software SAPO mostrou boa correspondência entre os métodos. / Due to the spread of new 3D scanning technologies, there is now the possibility of performing a body analysis from a three-dimensional model of the patient. This work aims to create a semiautomatic body evaluation platform for measuring angles and distances of anatomical points of the body, together with applications that only 3D information can aggregate, such as the measurement of body volume and perimeters of body sections, thus creating a complete equipment known as multifunctional 3D scanner. This equipment was built using 2 Microsoft Kinect sensors together with the ReconstructMe reconstruction library, a turntable and an Arduino microcontroller, creating a scanning platform and an intuitive and easy-to-use software. The developed platform was used in postural analysis tests of a mannequin following the SAPO evaluation protocol and compared to the SAPO software. The method of acquisition of three-dimensional models was fully automated and proved to be reliable, provided that the user remains still during the process. The body evaluation software, named AllBodyScan3D, was able to reproduce the proposed methods and perform a postural evaluation in ways not yet seen in other works. The comparison of postural evaluation results of the proposed software with the SAPO software showed a good match between the methods.
18

Sensorialidad en instrumentos musicales prehispánicos de la cultura Tumaco del suroccidente colombiano / Sensorialidade nos instrumentos musicais pré-hispânicos da cultura Tumaco do sudoeste colombiano / Sensoriality in pre-hispanic musical instruments of Tumaco culture for colombian southwest

Pinzón Pérez, Nelson Javier 21 February 2017 (has links)
Organização Interamericana de Direitos Humanos - OEA / A interpretação antropológica de instrumentos musicais e do fato cultural que fornece sua fabricação e uso, é relevante para a compreensão da música em sua dimensão simbólica, estética e sensorial. A criação de um instrumento sonoro, permite mostra a importância harmônica e melódica, que produz o instrumento musical, além de estabelecer o contato entre a comunidade pré-hispânica e a paisagem sonora o qual é percebido pelos sentidos. A música na cultura Tumaco, constitue a mostra de um grande grupo das técnicas oleiras para a fabricação de instrumentos musicais, se vislumbrando uma criação útil e simbólica para aqueles artefatos em as sociedades navegantes do Litoral Pacífico Colombiano entre o 300 A.C 300 D.C. Finalmente se escolheram um 23 peças, entre instrumentos e representações musicais, ampliando o âmbito ilustrativo dos artefatos, mostrando o corpo geral externo do instrumento musical; adicionalmente se fizeram provas sonoras de 9 instrumentos musicais, em ótimo estado de conservação, considerando uma percepção visual e sonora contemporânea da sonoridade préhispânica. / La interpretación antropológica de instrumentos musicales y del hecho cultural que propicia su fabricación y uso, es pertinente para la comprensión de la música en su dimensión simbólica, estética y sensorial. La creación de un instrumento sonoro, permite evidenciar la importancia armónica y melódica que produce el instrumento musical, además de establecer el contacto entre la comunidad prehispánica y el entorno sonoro el cual percibe mediante los sentidos. La música en la cultura Tumaco, constituye la evidencia de un gran manejo de las técnicas alfareras para la fabricación de instrumentos musicales, vislumbrándose una creación productiva y simbólica para este tipo de artefactos en sociedades navegantes del Litoral Pacífico Colombiano entre el 300 A.C – 300 D.C. Finalmente se seleccionaron un número de piezas ubicadas en el Museo del oro de Bogotá, de las cuales se realizaron tomas 3D, con scanner Eva Artec 3D de 24 piezas entre instrumentos y representaciones musicales, ampliado el ámbito ilustrativo de las piezas, mostrando el cuerpo general externo de la pieza musical; adicionalmente, se efectuaron pruebas sonoras de 9 instrumentos musicales, en excelente estado de conservación, considerando una perspectiva visual y sonora contemporánea de la sonoridad prehispánica. / Anthropological interpretation of musical instruments and the cultural facts promote their manufacture and use, it's relevant for understand musical, symbolic, aesthetic and sensory dimension. The creation of a sonourus instrument, allow highlight the importance of melodic and harmonic production of musical instrument, on top show the contact between the Pre-Hispanic population and sonourus environment that is perceived by the senses. Music on the Tumaco culture, constitutes evidence of a great technical pottery for the manufacture of musical instruments, glimpse a create production and symbolic for this type of artifacts on the Colombian Pacific coast on sailing communities between 300 BC - 300 AC. Finally was chosen a number of pieces in the Museo del Oro of Bogota of which were took 3D captures with scanner Eva Artec 3D, testing on 24 pieces between instruments and musical representations, broading the illustrative field of the pieces, showing the general body of music artifact. Additionally, it's does tests 9 musical instruments, in excellent conditions, consider a contemporary sound and visual perspective of Pre-Hispanic sound.
19

3D skener pro výukové účely / 3D scanner for educational purposes

Romanovský, Jiří January 2017 (has links)
This diploma thesis deals with the design of a 3D optical scanner using the structured light projection method. The aim of this thesis is to demonstrate the principles and processes of 3D scanning by using the DLP LightCrafter projector and the ImagingSource camera. The individual stages of the measurement process will be implemented to the Matlab software environment to describe the various principles and methods which can be used for digitizing the objects.
20

Otočný stolek k 3D skeneru / Rotary table for 3D scanner

Suchý, Lukáš January 2020 (has links)
This master thesis deals with the 3D scanning. This thesis explain methods of reversal engineering with a special aim for technical disciplines. Also some examples are being given. Next part deals with the 3D scanning technology and focuses on separation of scanners to a different groups and associated technology. Basically the scanning methods are separable to destructive and non-destructive groups. An images are obtained by 3D scan, its problematics and z-axis acquisition follow in next part of the thesis. Afterwards some key parameters suitable for selection of scanning systems are selected. A scanner "David SLS2" and its basic parameters, manipulation, service and calibrating process is being described. Last part deals with function and construction of rotating table used together with the 3D scanner David SLS2.

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