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Picture correction
Sedlo, Petr ; Horák, Karel (referee) ; Richter, Miloslav (advisor)
This work is focussed on different unwanted effects that damage a digitally acquired image. An image acquired using a digital camera can suffer from a series of defects. First, the noise is concerned. It occures due to discretisation. Next, there are the defects including vignetting, radial image distortion, chromatic aberration. In my thesis I also worked on backlight image compensation and panorama creation from an image sequence. For backlight images we need to increase the brightness in the dark parts of the image, so that the details became more visible. At panorama creation we are careful about brightness evenness in partial images, which is usually not conserved and consequently we try to find a suitable boundary-line to connect images and smooth it. The fundamental part of my work was writing the algorithms that are able to compensate these defects at least partly. For this aim I took use of the Matlab environment.
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Energy Assessment
Březina, Jan ; Maurerová, Lenka (referee) ; Horák, Petr (advisor)
The first part of the final thesis is focused on the use of thermovision for diagnosing defects and failures in building industry. Documented history, physical principles and conditions for the measuring of thermographic camera are described in this part. Thermal images of the object described below were used for demonstrating the defects. The second part is dedicated to the elaborated energy assessment for a nine-storey slab block building. In total, there are five energy economic measures developed for the building. Three of those are of structural character and two of those are for building equipment. There are two variants designed based on the measures, one of which is recommended and evalu-ated. The final section is focused on the measurement of slab block building indoor environment (CO2, air temperature, relative humidity, dew point) and its assessment in concern with the current legislation.
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Hand Gesture - Controlled VJ Mixer
Vlk, Jakub ; Žák, Pavel (referee) ; Polok, Lukáš (advisor)
This paper describes an implementation of a VJ Mixer controlled by hand gestures. For construction of VJ mixer is first necessary to detect hands in the picture. Therefore this paper first describes the methods of detection of human skin in an image, with an emphasis on the method of Gaussian probability distribution, which is used in the actual implementation of a program. Then some methods of detecting objects in images are described , mainly for hands and gestures. Great emphasis is placed on the method of convex defects, which was used in the final program. Finally, the procedures linking the hand gesture recognition with the video processing algorithms are described.
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Image data processing
Hamada, Adam ; Říha, Kamil (referee) ; Kubásek, Radek (advisor)
The main aim of this bachelor‘s thesis was the design of measure system and position detection method of one-shot plot in two axis system in cooperating with PROTOTYPA company. Also includes principle describe method which scanning fast moving object by high-speed CCD sensors. Further this thesis describing two algorithms for real-time process CCD video signal and in the end are selected components for this algorithms.
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Manipulation with the substance of the animation
Tesáček, Roman ; Brothánek, Adam (advisor) ; Opatrný, Marek (referee)
Thesis analyzes the current international competition of animated films Anifilm 2015. The aim of this study is to describe the fundamental nature of the animation. Identify rules and artistic means used in the films. The focus of the thesis is to the potential elimination or possible elimination of film defects by manipulating the individual images or scenes.
The work is divided into two main parts. The first describes theoretical and schematic knowledge of the animated film focusing on dramaturgy and editing. In doing so, it identifies artistic tools that are at the heart of matter animation. Mentioned are also differences in approaches to short and feature animated films. The practical part consists of a set of analyzes of short and feature-length animated films in competition Anifilm 2015 with regard to the places and scenes in the film that contribute to unclear testify or otherwise distorts theme of the film. Thesis does not omit cinematographic works with clear and precise nature.
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New Optimization Algorithms for a Digital Image Reconstruction in EIT
Kříž, Tomáš ; Koňas, Petr (referee) ; Král, Bohumil (referee) ; Dědková, Jarmila (advisor)
This doctoral thesis proposes a new algorithm for the reconstruction of impedance images in monitored objects. The algorithm eliminates the spatial resolution problems present in existing reconstruction methods, and, with respect to the monitored objects, it exploits both the partial knowledge of configuration and the material composition. The discussed novel method is designed to recognize certain significant fields of interest, such as material defects or blood clots and tumors in biological images. The actual reconstruction process comprises two phases; while the former stage is focused on industry-related images, with the aim to detect defects in conductive materials, the latter one concentrates on biomedical applications. The thesis also presents a description of the numerical model used to test the algorithm. The testing procedure was centred on the resulting impedivity value, influence of the regularization parameter, initial value of the numerical model impedivity, and effect exerted by noise on the voltage electrodes upon the overall reconstruction results. Another issue analyzed herein is the possibility of reconstructing impedance images from components of the magnetic flux density measured outside the investigated object. The given magnetic field is generated by a current passing through the object. The created algorithm for the reconstruction of impedance images is modeled on the proposed algorithm for EIT-based reconstruction of impedance images from voltage. The algoritm was tested for stability, influence of the regularization parameter, and initial conductivity. From the general perspective, the thesis describes the methodology for both magnetic field measurement via NMR and processing of the obtained data.
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SMV-2015-36: „Light Sheet“ microscope combining three wavelengths
Ježek, Jan ; Kaňka, Jan ; Jákl, Petr ; Šerý, Mojmír
The equipment is used for 3D scanning of fluorescence in biological samples. Three lasers with wavelengths suitable for biological samples are used for the excitation of fluorescent dyes. The image is scanned by a highly sensitive CCD camera. Switching between different excitation lasers is controlled by a computer. The observed sample is held in a holder mounted on a four-axis table (3 axes for moving a sample, one axis of rotation around the axis of the sample). The equipment is used to capture images of the sample in different positions of the positioning table.
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Applied Methods for Transparent Materials Inspection
Horák, Karel ; Honec, Jozef (advisor)
A lot of production lines contain camera inspection systems that increase quality of production. Therefore this presented work deals with applications of computer image processing methods in defectoscopy. Concretely the thesis is concerned with defects evaluation of glass bottles in food operations by the help of visual system BTCAM612, which is in existing configuration installed inland and in several foreign countries. The system is developed in conjunction with developer company CAMEA Ltd. from Brno and it is its sole ownership. The whole process of bottles inspection is described in sequence. First of all it is the hardware acquisition of images of three main controlled parts of bottles – neck, bottom and side. Next chapters are concentrated on image processing and features classification. The features are obtained from image by methods based on detection of in-homogeneities on glass material. Essential part of work is focused on filtration of synthetic patterns from bottles bottoms using function of complex invariants. These patterns are occurred especially in many plants in eastern countries, where marketplace with inspection systems and generally with quality inspection of industrial lines is expanded lately.
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Using the camera sensor in the measuring technique
Srba, Tomáš ; Čejka, Miloslav (referee) ; Bejček, Ludvík (advisor)
This bachelor thesis describes using of the Checkers in measuring technology, for control and picture comparing with picture reference by pixel match. Is describe part of machine vision as branch of industry automation. The bachelor thesis content summarized and described the basic methods, for image processing, function CCD and CMOS sensors, there are introduced standards of color signal encoding. Project this bachelor thesis is parameter checking of the checker. Special part of this work is description of working station for demonstration parameters checking of the checker. Program documentation of the Checker 101/E101 from COGNEX helps with design step by step.
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Optimization of the imaging spectrophotometer
Vodák, Jiří ; Antoš, Martin (referee) ; Ohlídal, Miloslav (advisor)
Thesis deals with an optimization of an imaging spectrophotometer which consists of a monochromator, a CCD camera with extended detection range to UV spectra and an imaging system. Main benefits of the optimization are utilization of a new lightsource, a connection of the monochromator and the imaging system by a fibre bundle and upgrade of a sample angle adjustment system by use of a auxiliary CCD camera. More changes were made to increase accuracy of measurements and ease of use of the apparatus.
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