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Video Anonymization
Mokrý, Martin ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
The goal of this thesis is to design and create an automatic system for video anonymization. This system makes use of various object detectors on an image to ensure functionality, as well as active tracking of objects detected in this manner. Adjustments are later applied to these detected objects which ensure sufficient level of anonymization. The main asset of this system is speeding up the anonymization process of videos that can be published after.
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Approximation of Sound Propagation by Neural Networks
Nguyen, Son Hai ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
Za účelem nahrazení výpočtově náročných konvenčních numerických metod řešících diferenciální rovnice jsou neurální výpočty stále více prozkoumávány. Tato práce se zaměřuje na řešení časově nezávislé Helmholtzovi rovnice, která modeluje šíření ultrazvuku při transkraniální léčbě ultrazvukem. Při použití konvolučních neuronových sítí musí být data navzorkovaná na pravidelné mřížce, abychom odstranili dané omezení, navrhli jsme neurální výpočet založený na grafových neuronových sítích. Narozdíl od fyzikálně informovaných neuronových sítích (PINN) je potřeba náš model natrénovat pouze jednou, řešení pro množinu nových parametrů vyžaduje pouze dopředných chod. Model byl natrénovaný pomocí učení s učitelem, kde referenční data byly vypočítána pomocí konvenční metody k-Wave. Náš model má stabilní rozvinutí, přestože byl natrénovaný pouze s osmi iteracemi. Ačkoli byl model natrénovaný pouze na datech s jedním zdrojem vln, tak zvládne predikovat i vlnová pole s více zdroji i v mnohem větších výpočetních doménách. Náš model je schopen predikovat subpixelové body s větší přesností než lineární interpolace. Dále je naše řešení schopno predikovat vlnové pole i s podvzorkovaným Laplaciánem, kde jsou pouhé tři vzorky na jednu vlnovou délku. Nejsme si vědomi žádné existující metody fungující s takto řídkou diskretizací.
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Web Tool for Testing Based on Q-Sorting
Mička, Vojtěch ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
This thesis describes process of designing user interface and implementing online q-sort application. The primary goal is to design the user interface as similar as possible to the classic q-sort with graspable elements, and to solve problem of easy understandeable layout with many functional stand alone elements on the limited size of monitor. The thesis describes the process of designing, implementing and testing of the application and it includes experiment for validation of application useability. The outcome of this thesis is an online application for q-sorting and the text of thesis documanting whole process of implementation.
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Fast Detection of Natural Objects
Zelinka, Martin ; Bartl, Vojtěch (referee) ; Šimon, Martin (advisor)
Thesis deals with the detection and localization of dogs in the image. It analyzes computer vision techniques suitable for solving this problem. It is designed and then implemented solution. Data set of images representing the object of the search and the data set of negative images are created. The resulting solution is finally subjected to training in order to determine the best parameters for used algorithms. The resulting program is included in the attached DVD.
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Automatic Traffic Camera Calibration for Vehicle Speed Measurement
Nociar, Marián ; Bartl, Vojtěch (referee) ; Špaňhel, Jakub (advisor)
This thesis deals with design and development of a system for Automatic Traffic Camera Calibration for Vehicle Speed Measurement. The thesis contains a theoretical introduction to the camera calibration, describes the principles of the methods used in the implementation and displays the proposed solution that was implemented in Python3 using OpenCV and NumPy libraries. The achieved results were evaluated over the BrnoCompSpeed dataset with the average speed measurement error reaching 6.71 km/h.
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Motion Detection in Video
Půček, Petr ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
This bachelor thesis deals with motion detection in video recorded on stationary camera. It describes the process of solution and implementation of motion detection app on Windows platform using OpenCV library for image processing. These principles of image analysis and processing can be used in any other systems.
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Detection of Traffic Signs and Lights
Chocholatý, Tomáš ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
The thesis focuses on traffic sign detection and traffic lights detection in view with utilization convolution neural network. The goal is create suitable detector for detection and classification traffic sign in real traffic. For training of convolution neural network were created appropriate datasets, that contains synthetic and real dataset. For synthetic dataset was create generator, that can simulated different deformation of traffic signs. Evaluation is done by own program for quantitative evaluation. The detection rate successfully detected signs is 89\% over own test dataset. The results allow to find out importance of representation real or synthetic dataset in training dataset and influence individual deformations synthetic dataset for final detection quality.
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Tracking of Moving Objects in Video
Folenta, Ján ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
This bachelor thesis deals with the issue of detection, tracking and counting vehicles in different directions in video. To deal with this problem, modern techniques of object detection and tracking using convolutional neural networks are used. The goal of this work is to achieve highest possible accuracy of vehicle counting while maintaining the processing of video recordings in real-time. The problems of the implemented method for detection and tracking are solved by analyzing and working with the trajectories of vehicles. With accuracy of 90,94% and total score of 0,8829, this work participated in AI City Challenge 2020, where it placed 6th.
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Information System and User Interface for Career Fair
Pavlík, Tadeáš ; Bartl, Vojtěch (referee) ; Dobeš, Petr (advisor)
This work focuses on the design and implementation of an information system and user interface for day of career opportunities at Olomouc grammar school. The aim of this thesis is to design an information system and user interface through which the presenters can apply for the event, the organizers can manage the event and interact with the visitors of the event. This thesis focuses on implementing an clear and easy - to - use user interface. The information system is implemented using Laravel framework, PHP language and Bootstrap 3 library. The thesis presents the design and implementation of database structure, use cases, information system and user interface. Testing was carried out using participants from previous years. The resultant information system is ready for deployment. The contribution of this work is simplifying the work of the organizers, providing visitors with information and getting information easily on mobile devices.
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Set Game for Android
Vlach, Antonín ; Bartl, Vojtěch (referee) ; Herout, Adam (advisor)
The aim of this thesis was to create an adaptation of card game Set for Android devices. The application should be easy to use. Another purpose of the application is to help beginner users with understanding the game rules. The outcome is a native Android application using simple material design. The main part is a time game. There is also explanation of rules with some graphical examples. Tutorial mode provides more difficulty levels helping beginners to master the game. One game takes about 3-10 minutes (depending on players skills), therefore the game is good to make some boredom more pleasant (e.g. waiting for public transport).
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