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The phenomenon of the advantages of the home environment in Czech football: an analysis of the influence of the (non) presence of fans on the behavior of players and referees
Kotěra, Jan ; Buriánek, Jiří (advisor) ; Šafr, Jiří (referee)
This bachelor's thesis examines the impact of the absence of fans on the so-called home-field advantage within the Czech football league. The aim was to verify the validity of conclusions from foreign studies on local data. The methodology used included t-tests for comparing match statistics with and without fans, and multiple linear regression with interactions. The results show that the absence of fans significantly influenced the match statistics. For most of the analyzed variables, there was either a complete elimination of the difference between the home and away teams, or this difference was at least halved compared to matches with fans. The influence of fans was demonstrated in the statistics of both home and away teams, for example, in variables such as the number of points and ball possession. In other player behavior- measuring statistics, there was a statistically significant (p-value < 0.05) impact only on the home team's statistics. As for the referees' decision-making, measured by fouls and yellow cards, in the absence of fans, they significantly changed their approach only towards the away teams. However, this too led to an overall reduction in home-field advantage. This work thus provides evidence of the significant influence of social forces, represented by the presence of fans, on...
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Image Deblurring in Demanding Conditions
Kotera, Jan ; Šroubek, Filip (advisor) ; Portilla, Javier (referee) ; Jiřík, Radovan (referee)
Title: Image Deblurring in Demanding Conditions Author: Jan Kotera Department: Institute of Information Theory and Automation, Czech Academy of Sciences Supervisor: Doc. Ing. Filip Šroubek, Ph.D., DSc., Institute of Information Theory and Automation, Czech Academy of Sciences Abstract: Image deblurring is a computer vision task consisting of removing blur from image, the objective is to recover the sharp image corresponding to the blurred input. If the nature and shape of the blur is unknown and must be estimated from the input image, image deblurring is called blind and naturally presents a more difficult problem. This thesis focuses on two primary topics related to blind image deblurring. In the first part we work with the standard image deblurring based on the common convolution blur model and present a method of increasing robustness of the deblur- ring to phenomena violating the linear acquisition model, such as for example inten- sity clipping caused by sensor saturation in overexposed pixels. If not properly taken care of, these effects significantly decrease accuracy of the blur estimation and visual quality of the restored image. Rather than tailoring the deblurring method explicitly for each particular type of acquisition model violation we present a general approach based on flexible automatic...
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Factors in attitude changes: base for environmental education
Kotěra, Jan ; Lorenzová, Jitka (advisor) ; Valenta, Josef (referee)
The thesis addresses attitude changes towards environmental problems. It looks for the factors that affect the attitude change and compares their importance. With regard to particular factors it suggests how to work more efficiently on changing the attitudes. The theoretical part gives an overview of environmental education. It follows its history in the Czech Republic and abroad, and describes its current objectives, topics and methods. It also discusses today's Czech public perception of environmental issues. The key chapter of the thesis addresses attitudes. It describes their formation, structure and basic functions and most importantly the circumstances under which they may change. With the help of literature, it defines eight fundamental factors that act to attitude change, and finds examples in environmental education. At the end of the theoretical part, recommendations are offered on what tools we should focus when trying to change attitudes. The research part presents the inquiry among selected environmental education centres' staff. It figures out how they work with the issue of attitude changes and how they take advantage of their clients' feedback. In the first place, it uses their experience to find the most important factors in attitude changes . The conclusion compares the findings...
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Variational methods for segmentation of digital images
Kotera, Jan
The text covers the theory of the Mumford and Shah model for digital image segmentation. The strong and weak formulation is presented and the questions of existence, uniqueness, and solution regularity is answered. Then, a particular variant of the model called `active contours without edges' is numerically implemented. This implementation is tested on several images, the results are presented in detail and theoretically explained. Powered by TCPDF (www.tcpdf.org)
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Image Deblurring in Demanding Conditions
Kotera, Jan ; Šroubek, Filip (advisor) ; Portilla, Javier (referee) ; Jiřík, Radovan (referee)
Title: Image Deblurring in Demanding Conditions Author: Jan Kotera Department: Institute of Information Theory and Automation, Czech Academy of Sciences Supervisor: Doc. Ing. Filip Šroubek, Ph.D., DSc., Institute of Information Theory and Automation, Czech Academy of Sciences Abstract: Image deblurring is a computer vision task consisting of removing blur from image, the objective is to recover the sharp image corresponding to the blurred input. If the nature and shape of the blur is unknown and must be estimated from the input image, image deblurring is called blind and naturally presents a more difficult problem. This thesis focuses on two primary topics related to blind image deblurring. In the first part we work with the standard image deblurring based on the common convolution blur model and present a method of increasing robustness of the deblur- ring to phenomena violating the linear acquisition model, such as for example inten- sity clipping caused by sensor saturation in overexposed pixels. If not properly taken care of, these effects significantly decrease accuracy of the blur estimation and visual quality of the restored image. Rather than tailoring the deblurring method explicitly for each particular type of acquisition model violation we present a general approach based on flexible automatic...
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Rubik's Cube augmented reality helper application
Španěl, Martin ; Kamenický, Jan (advisor) ; Kotera, Jan (referee)
The program introduced in this thesis assists with solving a Rubik's cube using computer vision and augmented reality. The assistance consists of two phases - in the first phase the state of the cube is recognized. In the second phase the next turn to make is shown until the cube is solved. Both of these phases do not need any other input from the user other than the data from the camera. The user can show the faces of the cube in arbitrary order and from arbitrary angle. During the solving phase the cube can be held in any orientation. Powered by TCPDF (www.tcpdf.org)
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Factors in attitude changes: base for environmental education
Kotěra, Jan ; Lorenzová, Jitka (advisor) ; Valenta, Josef (referee)
The thesis addresses attitude changes towards environmental problems. It looks for the factors that affect the attitude change and compares their importance. With regard to particular factors it suggests how to work more efficiently on changing the attitudes. The theoretical part gives an overview of environmental education. It follows its history in the Czech Republic and abroad, and describes its current objectives, topics and methods. It also discusses today's Czech public perception of environmental issues. The key chapter of the thesis addresses attitudes. It describes their formation, structure and basic functions and most importantly the circumstances under which they may change. With the help of literature, it defines eight fundamental factors that act to attitude change, and finds examples in environmental education. At the end of the theoretical part, recommendations are offered on what tools we should focus when trying to change attitudes. The research part presents the inquiry among selected environmental education centres' staff. It figures out how they work with the issue of attitude changes and how they take advantage of their clients' feedback. In the first place, it uses their experience to find the most important factors in attitude changes . The conclusion compares the findings...
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Variational methods for segmentation of digital images
Kotera, Jan
The text covers the theory of the Mumford and Shah model for digital image segmentation. The strong and weak formulation is presented and the questions of existence, uniqueness, and solution regularity is answered. Then, a particular variant of the model called `active contours without edges' is numerically implemented. This implementation is tested on several images, the results are presented in detail and theoretically explained. Powered by TCPDF (www.tcpdf.org)
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Variational methods for segmentation of digital images
Kotera, Jan ; Zitová, Barbara (advisor) ; Kružík, Martin (referee) ; Hron, Jaroslav (referee)
The text covers the theory of the Mumford and Shah model for digital image segmentation. The strong and weak formulation is presented and the questions of existence, uniqueness, and solution regularity is answered. Then, a particular variant of the model called `active contours without edges' is numerically implemented. This implementation is tested on several images, the results are presented in detail and theoretically explained.
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