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Graphics Intro 64kB Using OpenGL
Gunia, Pavel ; Španěl, Michal (referee) ; Herout, Adam (advisor)
This work deals with the phenomenon of graphic intros, a digital graffiti of the modern age. The focus is put on size restricted animation of size of the executable file lower than 64 kilobytes. It reveals the main techniques used. Finally, interesting aspects and experiences that came up are discussed, as well as the conclusion and future work proposal.
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Compression of IP Flow Records
Kaščák, Andrej ; Kajan, Michal (referee) ; Žádník, Martin (advisor)
My Master's thesis deals with the problems of flow compression in network devices. Its outcome should alleviate memory consumption of the flows and simplify the processing of network traffic. As an introduction I provide a description of protocols serving for data storage and manipulation, followed by discussion about possibilities of compression methods that are employed nowadays. In the following part there is an in-depth analysis of source data that shows the structure and composition of the data and brings up useful observations, which are later used in the testing of existing compression methods, as well as about their potential and utilization in flow compression. Later on, I venture into the field of lossy compression and basing on the test results a new approach is described, created by means of flow clustering and their subsequent lossy compression. The conclusion contains an evaluation of the possibilities of the method and the final summary of the thesis along with various suggestions for further development of the research.
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RedirFS - Application on Data Compression
Podroužek, Jan ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
This thesis in its first part examines the problems of developing linux kernel modules, specifically modules implementig RedirFS filters. In the next part it considers different types of copression algorithms and the implementation specifics on the CryptoAPI framework in the linux kernel. Finally it describes the design and operation of the CompFLT module that implements a RedirFS compression filter. Benchmarks done using the CompFLT module are presented in the last section.
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Dictionary Methods of Data Compression
Černičko, Sergij ; Polok, Lukáš (referee) ; Bařina, David (advisor)
The aim of this thesis is to analyse dictionary methods of data compression and their characteristics. The work is focused on and hands out detail overview of dictionary methods LZ77, LZ78, LZSS, LZW, DEFLATE and LZX. Principles of these methods and also general theory of compression is described. In conclusion all methods are tested and results analyzed.
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Graphics Intro 64kB Using OpenGL
Peňáz, Martin ; Tóth, Michal (referee) ; Milet, Tomáš (advisor)
This bachelor’s thesis deals with the solution of graphics intro with limited size of 64kB. The work describes methods used for creation of graphics intro. It deals with procedural generation, compiler settings and final compression by exe packer application.
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Medical Image Data Compression
Šebek, Jiří ; Bařina, David (referee) ; Kršek, Přemysl (advisor)
This thesis deals with several lossless methods of image compression. The main goal is to achieve the best compression ratio for set of medical images. This paper provides brief introduction into the data compression theory. It also contains design of image compression and description of designed compression modules implementation. Also the verifi cation of suitability of designed method for medical images compression is involved.
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Image codecs based on the wavelet transform
Kiska, Tomáš ; Říha, Kamil (referee) ; Rajmic, Pavel (advisor)
This bachelor´s thesis describes issues of wavelet compression, which is today already in common use mainly at work with digital photographs or other pictures. Using these algorithm you can copy informations and save efficiently. There are main image formats and types of compression suitable for editing pictures desribed in this thesis. So the focus is on discrete wavelet transform, which uses so-called wavelets, the Haar´s and Daubechies wavelet are the best known of all. Next chapter of this work explores colour spaces, in which can be a picture displayed. In case of coding and encoding it is model RGB and YCbCr. Not least there is mentioned term of picture decomposition. At the end, there are image codecs EZW, SPITH and EBCOT which are describe in detail.
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Embedded Photo Trap with Storing Pictures on SD Card
Marek, Ondřej ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
This bachelor thesis analyzes approaches and methods used for creation of modern camera traps and their use cases. It also describes the design and implementation details of embedded camera trap prototype, which is an output of this thesis. It focuses mainly on ways of saving energy consumption, compressing stored data and innovative features in terms of improved lighting system and wireless communication. Finally, the conclusion of this thesis contains a discussion of the results obtained during evaluation of the prototype and compares its properties with the camera traps available on the market.
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Static image compression techniques
Jirounek, Matěj ; Šmirg, Ondřej (referee) ; Krajsa, Ondřej (advisor)
Bachelor’s thesis dissert on nowadays used compression technologies static image, about their keystones, advantages and disadvantages in field of application and their reciprocal comparison. Work is divided to the seven capitols, second of which handles indicative allocation data compression, third about lossless compression and their main representative and fourth chapter is about less compression picture with her advantages and disadvantages as well as about colour models. In fifth chapter there are summarized used criteria for classification picture and in sixth chapter is shownd implementation programme in environment MATLAB.
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Image Compression Using the Wavelet Transform
Urbánek, Pavel ; Polok, Lukáš (referee) ; Bařina, David (advisor)
This thesis is focused on subject of image compression using wavelet transform. The first part of this document provides reader with information about image compression, presents well known contemporary algorithms and looks into details of wavelet compression and following encoding schemes. Both JPEG and JPEG 2000 standards are introduced. Second part of this document analyzes and describes implementation of image compression tool including inovations and optimalizations. The third part is dedicated to comparison and evaluation of achievements.
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