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Rendering of Nonplanar Mirros
Číž, Miloslav ; Pečiva, Jan (referee) ; Milet, Tomáš (advisor)
This work deals with the problem of accurately rendering mirror reflections on curved surfaces in real-time. While planar mirrors do not pose a problem in this area, non-planar surfaces are nowadays rendered mostly using environment mapping, which is a method of approximating the reflections well enough for the human eye. However, this approach may not be suitable for applications such as CAD systems. Accurate mirror reflections can be rendered with ray tracing methods, but not in real-time and therefore without offering interactivity. This work examines existing approaches to the problem and proposes a new algorithm for computing accurate mirror reflections in real-time using accelerated searching for intersections with depth profile stored in cubemap textures. This algorithm has been implemented using OpenGL and tested on different platforms.
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Usual time and frequency of mirrors and dashboard observation by the driver
Krejčí, Vojtěch ; Sedlák, Robert (referee) ; Bradáč, Albert (advisor)
The thesis deals with the analysis of the usual time and frequency of vehicle mirrors and dashboard observation. Within the theoretical part are summarized the current knowledge of the visual distraction of the driver, or circumstances which affect the conduct and behavior of the driver while driving. Furthermore there is a closer approximation and characterization of devices for recording the driver's eye movement, which is used during the measurement of the usual time of observation. This data is used in the experimental part of the thesis. The results were processed and statistically analyzed to determine the usual time of mirrors and dashboard observation. Conclusions done from the measurement results are contained in the last chapter, which also evaluates contribution of this work to practical use in the field of analysis of road accidents and to improve safety on our roads.
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Rendering of Nonplanar Mirros
Číž, Miloslav ; Pečiva, Jan (referee) ; Milet, Tomáš (advisor)
This work deals with the problem of accurately rendering mirror reflections on curved surfaces in real-time. While planar mirrors do not pose a problem in this area, non-planar surfaces are nowadays rendered mostly using environment mapping, which is a method of approximating the reflections well enough for the human eye. However, this approach may not be suitable for applications such as CAD systems. Accurate mirror reflections can be rendered with ray tracing methods, but not in real-time and therefore without offering interactivity. This work examines existing approaches to the problem and proposes a new algorithm for computing accurate mirror reflections in real-time using accelerated searching for intersections with depth profile stored in cubemap textures. This algorithm has been implemented using OpenGL and tested on different platforms.
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Usual time and frequency of mirrors and dashboard observation by the driver
Krejčí, Vojtěch ; Sedlák, Robert (referee) ; Bradáč, Albert (advisor)
The thesis deals with the analysis of the usual time and frequency of vehicle mirrors and dashboard observation. Within the theoretical part are summarized the current knowledge of the visual distraction of the driver, or circumstances which affect the conduct and behavior of the driver while driving. Furthermore there is a closer approximation and characterization of devices for recording the driver's eye movement, which is used during the measurement of the usual time of observation. This data is used in the experimental part of the thesis. The results were processed and statistically analyzed to determine the usual time of mirrors and dashboard observation. Conclusions done from the measurement results are contained in the last chapter, which also evaluates contribution of this work to practical use in the field of analysis of road accidents and to improve safety on our roads.
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Geometry in real life
ZOUBEK, Tomáš
The aim of this diploma thesis is a set of methodical materials for geometry education on primary, secondary schools and possibly during the basic courses on a university. This materials will be based on real geometry phenomenon which we meet every day. The knowledge and understanding of this phenomenon might play an important part during studies of mathematics and geometry. It also shows mathematics and geometry in their close relationship with the real world. The part of the description this phenomenon presented will be solved examples, examples for demonstration and also examples for practise. They are prepared a task, solution and a methodical reviews for each exercise. When preparing this work, it was used his current knowledge of methodology of mathematics and it was selected such forms, means and didactics procedures, which will go together with requirements on a visual solution (mathematical and geometrical software, an interactive whiteboard, worksheets, ) and with the purpose of the example presented (it´s interpretation, practise, testing, ). The part of this diploma thesis are worksheets. This worksheets can help get to know with geometrical phenomena in this work. The worksheets have primary and secondary school level.
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Optimization of electrode geometry and piezoelectric layer thickness of a deformable mirror
Kruchenko, Alexey ; Nováková, Kateřina ; Mokrý, Pavel
Deformable mirrors are the most commonly used wavefront correctors in adaptive optics systems. Nowadays, many applications of adaptive optics to astronomical telescopes, high power laser systems, and similar fast response optical devices require large diameter deformable mirrors with a fast response time and high actuator stroke. In order to satisfy such requirements, deformable mirrors based on piezoelectric layer composite structures have become a subject of intense scientific research during last two decades. In this paper, we present an optimization of several geometric parameters of a deformable mirror that consists of a nickel reflective layer deposited on top of a thin lead zirconate titanate (PZT) piezoelectric disk. Honeycomb structure of gold electrodes is deposited on the bottom of the PZT layer. The analysis of the optimal thickness ratio between the PZT and nickel layers is performed to get the maximum actuator stroke using the finite element method. The effect
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Zkušenosti s měřením reflexních vrstev u zrcadel používaných pro projekt Pierre Auger
Pech, Miroslav ; Hrabovský, Miroslav ; Schovánek, Petr ; Křepelka, Jaromír ; Palatka, Miroslav ; Nožka, Libor ; Mandát, Dušan ; Rössler, T. ; Řídký, Jan ; Boháčová, Martina
The Pierre Auger Observatory is designed for study of the universe's high energy particles, which evolve in the high layers of the atmosphere, where an elementary particle strikes with energy above 10.sup.19./sup. eV (1.6 J!). However, there is no scientific consensus about cosmic ray origin. The Auger Observatory is projected to gather the data needed to solve that puzzle. One of the detection technique is to observe these showers by fluorescent detectors, which are able to record the cascade development where the secondary particle causes atmospheric nitrogen to fluoresce.
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Light mirrors for VHE astronomy telescopes
Palatka, Miroslav ; Hrabovský, Miroslav ; Schovánek, Petr ; Vlček, Martin ; Řídký, Jan ; Grygar, Jiří ; Soukup, Ladislav ; Prouza, Michael ; Boháčová, Martina
The overview of light (weight) mirrors used in VHE astronomy telescopes is presented. The mirrors, which were developed in our laboratory are discribed.
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Production of mirror systems for cosmic rays detectors
Vlček, Martin ; Schovánek, Petr ; Palatka, Miroslav ; Hrabovský, Miroslav ; Řídký, Jan ; Grygar, Jiří ; Soukup, Ladislav ; Prouza, Michael ; Boháčová, Martina ; Nosek, D.
Joint Laboratory of Optics of Palacky University and Institute of Physics of the Academy of Science of the Czech Republic have cooperated and still works on several prestigious international projects of atmospheric optical detectors of cosmic rays.We deal with two French projects with international collaboration placed in French Pyrenees in Themis. These projects are CAT and Celesic.
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