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Shadow Volumes in OpenGL
Salvet, Jan ; Pečiva, Jan (referee) ; Havel, Jiří (advisor)
This thesis is focused on one particular method of shadowing in computer graphics. It not only describes basic theory, but also deals with actual implementation using modern OpenGL. It includes performance tests of several versions of this method using a testing application. The results show clear advantage of computing shadows on graphics card.
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Graphics Intro 64kB Using OpenGL
Juránková, Markéta ; Havel, Jiří (referee) ; Herout, Adam (advisor)
The aim of the master's thesis is to create a graphic intro with the limited size of 64kB. Brief history of a demoscene and the graphics library OpenGL is introduced in the following text. The main part of the work is a description of minimal graphics techniques used in a creative process and their further application in the final programme.
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Fast Computation of Ray-Triangle Intersection
Procházka, Václav ; Havel, Jiří (referee) ; Herout, Adam (advisor)
In this thesis we try to examine speed of 6 methods for ray-triangle intersection computation, which is elementary operation performed in raytracing. We examine their software implementations in C++ and SSE, for both single-ray and 4-ray packet implementation, as well as their hypothetical hardware implementation. Methods are tested with both randomly generated and real scenes and best results were measured for method Havel Herout (SSE4) among single-ray implementations and Shevtsov's method (SSE) among ray-packet implementations, where Shevtsov's method is of those two more suitable for hardware implementation.
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Frameless Rendering
Najman, Pavel ; Pečiva, Jan (referee) ; Havel, Jiří (advisor)
The aim of this work is to create a simple raytracer with IPP library, which will use the frameless rendering technique. The first part of this work focuses on the raytracing method. The next part analyzes the frameless rendering technique and its adaptive version with focus on adaptive sampling. Third part describes the IPP library and implementation of a simple raytracer using this library. The last part evaluates the speed and rendering quality of the implemented system.
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Physical Simulation in Computer Games
Dočkal, Jiří ; Havel, Jiří (referee) ; Herout, Adam (advisor)
The thesis is concerned with modern game engines, focusing on physical simulation and particle systems. It offers usable architectures overview for a game engine development. The thesis provides characteristic to the most essential game engine's logical modules as scene graph, resource management or rendering. Today's tools used for physical simulation in games are also described. Main part of the thesis concentrates on design and implementation of its own C3D game engine which exploits capabilities of the NVIDIA PhysX physical engine. The thesis includes modern techniques rising from author's gained experience.
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Fast Implementation of Geometric Algorithms
Krba, Martin ; Jošth, Radovan (referee) ; Havel, Jiří (advisor)
One of the most often used calculations in computer graphics is detection of collision between ray of light and triangle on the surface of object in 3D space. This frequent usage is motivation to search for the best methods for this calculations. This thesis contains explanation of basics of this topic and also testing of methods with real input data to better and accurate comparison.
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Library of Algorithms for Text Ciphering
Mikulka, Jiří ; Havel, Jiří (referee) ; Kubíček, Radek (advisor)
This thesis brings an overview of historical and modern methods and approaches used in cryptography. It also describes and assesses ciphers, which have been used since the very beginning of encryption till modern ciphers. Based on information resulting from this overview the reader should be able to distinguish between ciphers, know their advantages and disadvantages, and be able to choose the best cipher for any purpose. Ciphers mentioned in this thesis are implemented in a library called CipherLib , which shows usage of every described cipher.
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Fast Ray-Triangle Intersection
Havel, Jiří ; Zemčík, Pavel (referee) ; Herout, Adam (advisor)
Triangle is the mostly used primitive in computer graphics. Calculation of its intersection with a ray has many applications and is often a bottleneck of a program. This work focuses on its usage and various methods of calculation. It tries to combine these techniques to achieve high performance on modern processors.
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Comparison of Open Source Rendering Libraries
Záleta, Martin ; Herout, Adam (referee) ; Havel, Jiří (advisor)
The main purpose of this paper is to provide a detailed analysis of some of the major available open source rendering libraries with the emphasis on their notable characteristics, and an in-depth comparison among them with regards to their possible practical use. Specifically, the selected rendering libraries in this paper are the following - OpenSceneGraph, Ogre 3D, Irrlicht Engine, Crystal Space and OpenSG, but a sidenote is given to some of the others as well. Last but not least, self-made examples of their usage are also included, and are meant to demonstrate some of the mentioned characteristics and principles of the analysed libraries.
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Accelerating Face Anti-Spoofing Algorithms
Beňuš, Ondřej ; Havel, Jiří (referee) ; Veselý, Karel (advisor)
Tato práce se specializuje na akceleraci algoritmu z oblasti obličejově zaměřených anti-spoofing algoritmů s využitím grafického hardware jakožto platformy pro paralelní zpracování dat. Jako framework je použita technologie OpenCL která umožňuje použití od výkoných stolních počítačů po přenosná zařízení, od různých akcelerátorů jako grafické čipy, či ASIC až po procesory typu x86 bez vazby na konkrétního výrobce či operační systém. Autor předkládá čtenáři rozbor a akcelerovanou implementaci široce používaného algoritmu a dopadu urychlení výpočtu.
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