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Gesture-Based Human-Computer Interface
Chaloupka, Jan ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
This bachelor's thesis is about design and implementation of simple interface for hand gesture recognition. The interface is used as an extension of actual GUI elements. Skin color model is used for gesture segmentation, significant hand points (palm, fingers, fingertips) for gesture recognition. Designed interface is used for simple picture explorer controlling. Final application is capable of using simple gestures for scaling, rotation, pointing and click.
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Effective Algorithms for High-Precision Computation of Elementary Functions
Chaloupka, Jan ; Kunovský, Jiří (referee) ; Šátek, Václav (advisor)
Nowadays high-precision computations are still more desired. Either for simulation on a level of atoms where every digit is important and inaccurary in computation can cause invalid result or numerical approximations in partial differential equations solving where a small deviation causes a result to be useless. The computations are carried over data types with precision of order hundred to thousand digits, or even more. This creates pressure on time complexity of problem solving and so it is essential to find very efficient methods for computation. Every complex physical problem is usually described by a system of equations frequently containing elementary functions like sinus, cosines or exponentials. The aim of the work is to design and implement methods that for a given precision, arbitrary elementary function and a point compute its value in the most efficent way. The core of the work is an application of methods based on AGM (arithmetic-geometric mean) with a time complexity of order $O(M(n)\log_2{n})$ 9(expresed for multiplication $M(n)$). The complexity can not be improved. There are many libraries supporting multi-precision atithmetic, one of which is GMP and is about to be used for efficent method implementation. In the end all implemented methods are compared with existing ones.
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Subjektive Defining of Life Goals of Pupils with Behavioural Disturbances
Chaloupka, Jan ; Mottlová, Jana (advisor) ; Felcmanová, Lenka (referee)
Subjective Defining of Life Goals of Pupils with Behavioural Disturbances Author: Jan Chaloupka Faculty of Education, Charles University in Prague - Department of Special Education Supervisor: Mgr. Jana Mottlová Based on studying literature on general pedagogy, special pedagogy and psychology as well as on the author's personal experience with working with pupils with behavioural disturbances, the author proposes a hypothesis, according to which the long-term goal seeking efforts of the majority of pupils concerning socialization and education are absent, distorted and ineffective. The objective of this paper is to confirm or refute the validity of the hypothesis as well as to theoretically formulate impulses for practice. The research was performed on a sample of 120 respondents and a contrastive control group of 30 grammar school students. It was effectuated by means of a questionnaire and complemented by interviews, which are not included in full form for space reasons. The research has shown that in a heterogeneous group of respondents, a majority of two thirds is either incapable of life goals definition or the definition is rather inadequate and unrealistic. The author, however, has identified the reasons for this neither in the faulty family or educational background nor in decreased...
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Gesture-Based Human-Computer Interface
Chaloupka, Jan ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
This bachelor's thesis is about design and implementation of simple interface for hand gesture recognition. The interface is used as an extension of actual GUI elements. Skin color model is used for gesture segmentation, significant hand points (palm, fingers, fingertips) for gesture recognition. Designed interface is used for simple picture explorer controlling. Final application is capable of using simple gestures for scaling, rotation, pointing and click.
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The valuation of CHÂTEAU VALTICE - Vinné sklepy Valtice, a.s.
Novotný, Milan ; Krabec, Tomáš (advisor) ; Chaloupka, Jan (referee)
The aim of this diploma thesis is to determine the objectivized value of CHÂTEAU VALTICE Vinné sklepy Valtice, a.s. while maintaining its current business concept as of 31.12.2015. The thesis is divided into several thematic units in accordance with the es-tablished valuation practice in the Czech Republic. First, the company is introduced and its financial health and competitive position on the market are assessed. The forecast of market share and revenue growth is based on the results of Strategic Analysis. The anal-ysis and prognosis of value generators are then used to compile a financial plan that forms the basis for a DCF equity valuation, which is complemented by a market-based valuation through industry multipliers method and also by substance-based valuation.
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Subjektive Defining of Life Goals of Pupils with Behavioural Disturbances
Chaloupka, Jan ; Mottlová, Jana (advisor) ; Felcmanová, Lenka (referee)
Subjective Defining of Life Goals of Pupils with Behavioural Disturbances Author: Jan Chaloupka Faculty of Education, Charles University in Prague - Department of Special Education Supervisor: Mgr. Jana Mottlová Based on studying literature on general pedagogy, special pedagogy and psychology as well as on the author's personal experience with working with pupils with behavioural disturbances, the author proposes a hypothesis, according to which the long-term goal seeking efforts of the majority of pupils concerning socialization and education are absent, distorted and ineffective. The objective of this paper is to confirm or refute the validity of the hypothesis as well as to theoretically formulate impulses for practice. The research was performed on a sample of 120 respondents and a contrastive control group of 30 grammar school students. It was effectuated by means of a questionnaire and complemented by interviews, which are not included in full form for space reasons. The research has shown that in a heterogeneous group of respondents, a majority of two thirds is either incapable of life goals definition or the definition is rather inadequate and unrealistic. The author, however, has identified the reasons for this neither in the faulty family or educational background nor in decreased...
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LLVM IR Optimizations for Decompilation
Kollár, Jaroslav ; Chaloupka, Jan (referee) ; Matula, Peter (advisor)
This master's thesis describes the design and implementation of optimizations in the middle-end part of a retargetable decompiler developed by AVG Technologies. The purpose of these optimizations is to improve readability of the produced source code and improve existing optimizations in the back-end part. In the introduction, basic information about reverse engineering and decompilation is provided. Then, a description of state of the retargetable decompiler before this work is given. After that, the main part of this work is presented, which describes the design and implementation of the proposed optimizations. Then, the techniques that were used for testing are described. This description is followed by a summary of the achieved results. The present work is concluded by a discussion of possible future development.
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Effective Algorithms for High-Precision Computation of Elementary Functions
Chaloupka, Jan ; Kunovský, Jiří (referee) ; Šátek, Václav (advisor)
Nowadays high-precision computations are still more desired. Either for simulation on a level of atoms where every digit is important and inaccurary in computation can cause invalid result or numerical approximations in partial differential equations solving where a small deviation causes a result to be useless. The computations are carried over data types with precision of order hundred to thousand digits, or even more. This creates pressure on time complexity of problem solving and so it is essential to find very efficient methods for computation. Every complex physical problem is usually described by a system of equations frequently containing elementary functions like sinus, cosines or exponentials. The aim of the work is to design and implement methods that for a given precision, arbitrary elementary function and a point compute its value in the most efficent way. The core of the work is an application of methods based on AGM (arithmetic-geometric mean) with a time complexity of order $O(M(n)\log_2{n})$ 9(expresed for multiplication $M(n)$). The complexity can not be improved. There are many libraries supporting multi-precision atithmetic, one of which is GMP and is about to be used for efficent method implementation. In the end all implemented methods are compared with existing ones.
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