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The effect of the background and dataset size on training of neural networks for image classification
Mikulec, Vojtěch ; Kolařík, Martin (referee) ; Rajnoha, Martin (advisor)
This bachelor thesis deals with the impact of background and database size on training of neural networks for image classification. The work describes techniques of image processing using convolutional neural networks and the influence of background (noise) and database size on training. The work proposes methods which can be used to achieve faster and more accurate training process of convolutional neural networks. A binary classification of Labeled Faces in the Wild dataset is selected where the background is modified with color change or cropping for each experiment. The size of dataset is crucial for training convolutional neural networks, there are experiments with the size of training set in this work, which simulate a real problem with the lack of data when training convolutional neural networks for image classification.
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Picnic
Rafaelová, Kateřina ; Merta, Johana (referee) ; Artamonov, Vasil (advisor)
The final work aims to communicate via simplicity in painting's form related to family background. Trough the banalized motives I'm letting the spectator to stop for a while and think about the values of family sharing.
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Effects of pattern, size and background contrast of prey on discrimination learning in avian predators
Kuncová, Aneta ; Exnerová, Alice (advisor) ; Komárek, Stanislav (referee)
The topic of this master thesis was the effects of pattern, size and background contrast of prey on discrimination learning of avian predators. The aim of this study was to investigate the influence of selected components of warning coloration on aversive discrimination learning of avian predators of different age and sex. The choosen model organism was the Great tit (Parus major). The comparision was done between hand-reared naïve birds and wild-caught adults of different age and sex. The experiment was taking place in the experimental cage with one way mirror. The experiment used a design of simultaneous task with two pray which differed in one component of the coloration (pattern, size and background kontrast). The differencies in the ability of discrimination learning was found just between hand-rared naïve birds and wild-caught adults. Better results were shown by the wild-caught adults. The ability of discrimination learning of wild-caught adults was not influenced by the age and sex. Pattern was the only significant component of the warning coloration due to which the birds were able to memorise the discrimination task. Key words: avoidance learning, unpalatable prey, pattern, size, background, contrast
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Motion Detection in Video Sequences
Chadim, Petr ; Štancl, Vít (referee) ; Švub, Miroslav (advisor)
This thesis deal with a problem of motion detection in video sequence. The basic principle of method Bacground subtraction and the algorithm for searching differences between frames were described in details. Great attention is made for actualization of referential frame. Part of this thesis is a localization of motion object. The result of this thesis is an application for testing of motion detector in different environments.
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Inventure of the City Center ? Brno – Veveří – Žerotínovo náměstí
Holá, Martina ; Chládek, Pavel (referee) ; Hybská, Bohumila (advisor)
The main subject of the thesis is a revision of current area framing northwest part of Žerotín Square, that nowadays consists of so called White house (center for children health care and a seat of a medical school). The design is based on theoretical situation concerning the removal of White house and therefore it uses the newly existing place as a subject for new architectural solution. The solution emphasizes the completion of current block of buildings with large courtyard and corner between Žerotín Square and Veveří street, which is very important for traffic. The thesis is focusing on finding the right form, scale and functional content which would reflect the importance of the location, especially focusing on the Brno’s ring road that goes directly to Denisovy sady and accessibility of this city’s part. It also respects the design of the back side of the Red Church. The design uses the newly existing place as a location for new apartment building that reflects the scale of similar buildings in Marešov and other nearby streets and it also proposes administration building as an architectural solution for this location, which would be used as a seat for both municipal and national institutions.
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The care of endangered children and children living autside of the innate family
PŘIBYLOVÁ, Marta
This diploma thesis is focused on psychosocial issues related to vulnerable and lonely children, especially with regard to the threat of emotional deprivation. Theoretical part provides definitions of key terms, such as child needs, upbringing, family and its background, psychological deprivation and its consequences; substitute family care, socialization, etc. The aim of theoretical part is to outline development and education of children in out-of-home care facilities in comparison with the care of child in its own family environment. These differences have been analyzed in the research part of the work. The main goal was to contact several involved experts and learn their approaches and opinions regarding the vulnerable children situation in the Czech Republic, which has been facing these issues. Semistructured interview conducted by me with the above experts was focused mostly on asking questions regarding existing {\clqq}imperfections`` in the Family Code and Act on social & legal protection of children, as amended, to highlight the indicators which have negative impacts on successful psychosocial development of children. To provide better picture of the researched issue, the work is complemented by the casuistics of a family with adopted child.
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Stability of the field of view uniformity in gamma kamera Infinia
KOLÁŘOVÁ, Hana
The methods of field-of-view uniformity measurement on Infinia scintillation cameras as applied within the daily quality control exercise are described, and the results are evaluated against the limiting levels specified by the manufacturer. Uniformity is a basic parameter describing the scintillation camera image quality. In order to assure a smooth and continuous operation of nuclear medicine departments, instrumentation must comply with quality requirements for the examination of patients. For Infinia scintillation cameras the manufacturer recommends their planar integral uniformity to be tested on a day-by-day basis. Infinia cameras are parts of SPECT/CT systems. If the planar parameters of the SPECT system are not very good, planar imaging is slightly affected but SPECT images in the tomographic mode can be ruined altogether.Two methods exist for uniformity measurement, using either a point source of ionizing radiation or a planar source of ionizing radiation, respectively. The main objective of this project was to collect measuring data from several departments, compare them and ascertain whether the data exceed the limit specified by the manufacturer. From the field-of-view uniformity measurements it can be concluded unambiguously that the limits specified by the manufacturer of the Infinia scintillation cameras were never exceeded. In other words, the performance of the detection technology was never so poor as to affect adversely the diagnostic information derived from the system. In conclusion, information gained within this work attests to the reliability of Infinia scintillation cameras.
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