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Effect of the use of photogrammetry on the accuracy of a handheld laser scanner
Matuš, Vít ; Hurník, Jakub (referee) ; Koutecký, Tomáš (advisor)
This bachelor thesis is discussing The effect of using photogrammetry on the accuracy of a handheld laser scanner. Aim of the work is to determine, how much will the omission of photogrammetry impact the accuracy of data acquired by the handheld laser scanner and what other phenomena can occur by omitting the photogrammetry preparations. The goals were reached by analysing data of multiple measurements of two larger-sized objects. The acquired data were evaluated statistically for better reliability of made conclusions. The outcome was according to expectations, there were made conclusions about the influence of using the photogrammetric method on the accuracy of a handheld laser scanner. A comparison was made for marker data, mesh data and trends influencing the accuracy of measurements. Using photogrammetry, the results were up to 42,7 times more accurate in case of marker data. In case of mesh data, the results were up to 13,0 times more accurate. Thanks to this thesis a reader can have an idea about whether the use of photogrammetry method is or isn’t necessary to reach the desired accuracy, eventually what kind of undesired side-effects can occur without the use of photogrammetry.
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Automation of optical measuring via TRITOP optical coordinate system
Koutecký, Tomáš ; Růžička, Bronislav (referee) ; Volek, Aleš (advisor)
The goal of this diploma thesis is to automate photogrammetric measuring system TRITOP. In the literature retrieval part there is a review of digitizing methods and its description. Further it contains a description of the photogrammetric system TRITOP role. The practical part of the thesis deals with methodology of the TRITOP measurement and evaluation process automation. Automation is then verified on a practical example.
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Program for light pattern decoding in structured light 3D scanner application
Ďuriš, Miroslav ; Zatočilová, Aneta (referee) ; Koutecký, Tomáš (advisor)
This thesis deals with decoding program design for fringe projection 3D scanner and transformation of decoded information into world coordinates. Contemporary indus-try increasingly uses the optical measuring devices to control dimensional and geo-metrical quality of produced products. Therefore, the main goal of the thesis is to expand existing knowledge about the optical 3D scanner used at the Institute of Ma-chine and Industrial Design at Faculty of Mechanical Engineering Brno University of Technology and to create software that handles images made by a camera, using lim-ited available information about the measuring system and its parameters. Fringes projected by a projector form a sinusoidal pattern, that is phase shifted several times to obtain a wrapped phase map of this pattern. Then the phase unwrapping is carried out using the multi-wavelength method. Relations between the unwrapped phase of a pixel and world coordinates are obtained by empirical system calibration. The thesis describes a complete process of the program development and its func-tionality. The data obtained from the developed program are compared with the data generated by original 3D scanner control software. Consequently, there is determined an accuracy and functionality of the developed program and algorithms.
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Development of color filter wheel
Kilián, Ondřej ; Koutecký, Tomáš (referee) ; Hurník, Jakub (advisor)
This bachelor thesis aims to showcase designing process of the device and control software and subsequent realisation of a filter wheel for research applications, which is designed specifically for a ZWO ASI 1600MM camera, ZEISS Interlock® Compact lenses and optic filters produced by company Schneider-Kreuznach. This configuration of camera and lenses doesn’t allow use of existing products on the market.
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Elaboration of examples for teaching assembly breakdowns in Inventor
Nečas, Zbyněk ; Koutecký, Tomáš (referee) ; Košťál, David (advisor)
This bachelor’s thesis deals with the presentation environment of the Autodesk Inventor program, especially the description of individual functions and how to work with them. The main part of this work is the creation of educational examples for teaching assembly breakdowns in Inventor. Because this is a new subject, there is only a limited number of these examples. Therefore, three educational presentations will be part of this work, describing the process of how students will work with the created assemblies available to them in E-learning. These examples will help students to gain knowledge and experience about decomposition of assemblies, following creation of images and videos, as well as their use in drawings or technical manuals.
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3D scanner for educational purposes
Romanovský, Jiří ; Navrátil, Robert (referee) ; Koutecký, Tomáš (advisor)
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.
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