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64kB Graphics Intro Based on Ray-Tracing
Butko, Michal ; Polok, Lukáš (referee) ; Havel, Jiří (advisor)
This thesis is concerning about graphic intro with limited size and about techniques based on ray tracing principles. The thesis serves as theoretical introduction and description of a concept and implementation of a graphic intro with limited size to 64kB and based on ray tracing. Acquired informations and resume of created application are mentioned as well. Because of that, this text can serve for eventually study purposes or help with finding answers for similar problems.
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Vertex/Pixel Shaders in Realtime Rendering
Ligmajer, Jiří ; Havel, Jiří (referee) ; Švub, Miroslav (advisor)
My bachelor's thesis is about vertex and pixel shaders. It is engaged in evolution, funcionality and usage of shaders in realtime graphics. This bachelor's thesis also includes tutorials, that are describing theory and implementation of three realtime rendering techniques, which were chosen by me. Results of my realtime techniques are evaluated at the end of my book.
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Ray Tracing Using k-D Tree
Musil, Petr ; Jošth, Radovan (referee) ; Havel, Jiří (advisor)
This thesis describes the design and implementation of an application for picture synthesis using ray tracing. The goal is to verify properties of an space subdivision optimalization method using KD tree. The work compares spatial median, objects median and cost model methods for splitting plane determination during KD-tree construction. Several test scenes are used for evaluation.
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Tetrahedral Mesh Processing Library
Hromádka, David ; Havel, Jiří (referee) ; Španěl, Michal (advisor)
Many architecure, medical and engineering applications need a spacial support for various numerical computations (i.e. FEM simulations). Tetrahedral meshes are one of perspective spatial representations for them. In this thesis, several possibilities of effective tetrahedral mesh representation for its generating and processing are described. A computer library for the mesh processing is proposed which can be characterized by memory efficient imposition of the mesh while preserving the ability to apply topological and geometric algorithms effectively. The library is implemented in C++ language using templates. Time and space complexity of typical mesh operations is compared with CGAL library and according to measurements the proposed library has lower memory requirements than CGAL.
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Android IP Camera
Chvála, Jan ; Havel, Jiří (referee) ; Herout, Adam (advisor)
The goal of this thesis is to design a system which would allow video data streaming from a mobile device and real time playback using a standard web browser. The technological background and the implementation platform are both part of this thesis. Web Real Time Communications (WebRTC) technology was used for acquiring multimedia data on mobile device. This technology is natively supported in the latest major web browsers and in WebView component (Android version 5.0 and above). Sending push notifications from a server to a mobile device to start the streaming is done with Google Cloud Messaging technology. The resultant system allows a user to start the application on mobile device with easy web browser access. This starts the multimedia stream from device, which can be parametrized and secured by password. The benefit of this thesis is the overview of WebRTC technology and its demonstration. The IP camera implementation shows how easy it is to use the WebRTC in real applications.
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Library for Efficient Video Capture in 3D Application
Pospíšil, Petr ; Navrátil, Jan (referee) ; Havel, Jiří (advisor)
This thesis deals with library for recording video in the background of 3D application. A library is designed to work under the Microsoft Windows and Linux operation systems. It records image and also sound. Image recording is supported in OpenGL, Direct3D9, Direct3D10 and Direct3D11. To reduce video data size, library supports image compression using MJPG codec. Audio is recorded by WaveForm audio, Windows Core Audio or ALSA. Recorded sound is for whole operation system. A library is able to record up to two audio streams to accommodate possible microphone input. It can mix audio data together if needed. Output data are then written into AVI file. It is possible to write own text information as overlay that is rendered as part of application screen output.
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Ray-Tracing Using SSE
Kučera, Jiří ; Herout, Adam (referee) ; Havel, Jiří (advisor)
This thesis describes the acceleration technique of ray-tracing method using SSE instruction set. Choosing the parallel tracing of four rays enclosed in one beam turned to be the best way of using SSE effectively. Also the vectorization of algorithms which are used in ray-tracing method was implemented. The solution of beam splitting was designed and implemented too. The time for rendering image was monitored in the tests - one for case when the beam includes all the rays and one for case when there is just one ray in the beam.
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Evaluation of porosity in Al-alloy die-castings
Havel, Jiří ; Nová, Iva (referee) ; Čech, Jaroslav (advisor)
The aim of this diploma thesis is to analyse the porosity of die - cast cast that were made of the alloy AISi9u3 in iron-foundry Skoda Car Mlada Boleslav. The analysis and the sample comparisons are based on my own measurements and are also connected with previous diploma thesis which deals with that issue and was drawn up at Technical University in Brno. All measurements were statistically tested.
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Point to Line Mappings and Other Line Parameterizations not only for Hough Transform
Havel, Jiří ; Kälviäinen, Heikki (referee) ; Lefevre, Sebastien (referee) ; Herout, Adam (advisor)
Tato práce se zabývá Houghovou transformací (HT). HT je nejčastěji používána pro detekci přímek nebo křivek, ale byla zobecněna i pro detekci libovolných tvarů. Hlavní téma této práce jsou parametrizace přímek, speciálně PTLM - zobrazení bodů na přímky. Tyto parametrizace mají tu vlastnost, že bodům v obrázku odpovídají přímky v parametrickém prostoru. Tato práce poskytuje důkazy některých vlastností PTLM. Za zmínku stojí existence páru PTLM vhodného pro detekci a efekt konvoluce v obrázku na obsah parametrického prostoru. V práci jsou prezentovány dvě implementace HT. Obě využívají k akceleraci grafický hardware. Jedna využívá GPGPU API CUDA a druhá zobrazovací API OpenGL. Jako aplikace detekce přímek je uvedena část detekce šachovnicových markerů použitelných pro rozšířenou realitu.
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Shadow Rendering through Translucent Materials
Mátl, Roman ; Havel, Jiří (referee) ; Navrátil, Jan (advisor)
This paper describes the calculation of shadows through translucent materials using a method called Colored Stochastic Shadow Maps and its practical implementation in OpenGL libraries. At the beginning of this work a Shadow mapping method is introduced. The next section shortly describes selected ways of dealing with rendering of transparent objects in the scene. This is followed by detailed explanation of the method Colored Stochastic Shadow Maps. The last section describes the implementation of demonstration application in C++ language, evalution of the results and proposal of options to continue the project.
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