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Gait detection and step counting using smartphone
Kočendová, Kateřina ; Vítek, Martin (referee) ; Němcová, Andrea (advisor)
The focus of this thesis is the detection of walking and running, followed by a step count. Testing is performed on signals of regular daily human activity that involve sections of running, walking or no activity. Those signals are logged using accelerometer in smartphone. The exact type of physical activity performed is distinguished by an average, variation coefficient and wave transformation methods. Basics statistic methods are used to quantify the number of steps taken during either walking or running. Algorithm for activity detection and algorithm for step counting are optimized and tested by a set of signals.
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Recognition of vehicles using signals sensed by smartphone
Nevěčná, Leona ; Vítek, Martin (referee) ; Smíšek, Radovan (advisor)
Thanks to the development in recent years, the placement of miniaturized sensors such as accelerometers, gyroscopes, magnetometers, global positioning system receivers (GPS), microphones or others to commercially sold smartphones is increasing. Use of these sensors (which are to be found in the smartphone) for human activity recognition with health care improvement in mind is a discussed theme. Advantages of the use of smartphone for human movement monitoring lies in the fact that it is a device that the person measured carries with them and there are no additional costs. The disadvantages are a limited storage and battery. Therefore, only accelerometer, gyroscope, magnetometer, and microphone were chosen because their combination achieves best results. GPS sensor was excluded for its lack of reliability in sampling and for being energy demanding. Features were computed from the measured data and used for learning of the classification model. The highest accuracy was achieved with the use of a machine learning method called Random Forest. The main goal of this work was to create an algorithm for transportation mode recognition using signals sensed by a smartphone. The created algorithm succeeds in classification of walk, car, bus, tram, train, and bike in 97.4 % with 20 % holdout validation. When tested on a new set of data from the tenth volunteer, the resulting accuracy counted as average form classification recall for each transportation mode reached 90.49 %.
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Mobile System for Text Recognition on Android
Tomešek, Jan ; Kolář, Martin (referee) ; Zemčík, Pavel (advisor)
This thesis deals with creation of a mobile library for preprocessing of images with text which represents a part of a system for text recognition. The library is realized with emphasis on generality of use, efficiency and portability. The library providing a set of algorithms primarily for image quality assessment and text detection was created in this thesis. These algorithms enable a substantial decrease in volume of transmitted data and speed up and refinement of the recognition process. An example application for the Android platform able to analyze composition of foods stated on their wrappings was created as well. Overall, the library (system) simplifies development of mobile applications with focus on text extraction and analysis. The mobile application then provides a comfortable way of food harmfulness verification. The thesis offers a reader an overview of current solutions and tools available in this field, it provides a breakdown of important image preprocessing algorithms and guides him through the construction of the library and the application for mobile devices.
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Android Application - Dictionary with Examples
Maňák, Libor ; Grézl, František (referee) ; Szőke, Igor (advisor)
This master's thesis deals with development of dictionary application for devices with Android operating system. The application provides examples in form of sentences, which can help users decide what translation variant is the right for them. This application is created as alternative for web service benimsozluk.com and there is cooperation between them. This thesis describes theoretical knowledge related to Android and development of this application. Parts of this thesis are dedicated to design as well as implementation of the application. The reader is introduced to testing conclusions. Testing was done for improving the application as well as for making an assessment of the application final state. In the final part potential future development of the application is drafted.
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Multi-platform development of geolocation application
Pinkava, Marek ; Komosný, Dan (referee) ; Pospíšil, Aleš (advisor)
This thesis deals with development possibilities of multi-platform geolocation applications using modern web technologies. The introduction is offered a summary of available mobile platforms development opportunities for them. Follows the description of web technologies suitable for application development. Another chapter is devoted with methods of geolocation and their possibilities and limitations. After is described the implementation a specific application of selected technologies. The outcome of this thesis is fully working multiplatform application developed in order to help students to easy navigation between important places of faculty.
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Blood pressure estimation using smartphone
Vařečka, Martin ; Vítek, Martin (referee) ; Němcová, Andrea (advisor)
Blood pressure is one of the basic indicators of the health state of the cardiovascular system. High blood pressure is the main risk factor of ischemic heart disease, atherosclerosis and stroke. Therefore, it is important to monitor long-term changes in blood pressure and respond in time to these changes. Blood pressure meters are not standard household equipment, while a well-equipped smartphone is. Smartphones contain a large number of sensors capable of measuring biomedical signals. This thesis focuses on creating an application capable of determining blood pressure using data obtained from these sensors.
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Map editing application working with GPS module
Plch, Jan ; Kubánek, David (referee) ; Lattenberg, Ivo (advisor)
This thesis deals with theoretical design and practical realization of map editing application. The first chapter is focused on theoretical explanation of the most important terms in GPS describing basic principles and position monitoring possibilities. Further is described block scheme of GPS receiver. Next chapter describes NMEA 0183 protocol which is used for data transfer between GPS module and application. At the end of theoretical part is some information about geodetic system WGS-84 and files for trace recording. Application is creating in .NET Compact Framework in C# language. Application is able to load map in image format. Trace from specific file format can be displayed into map. Application can show currently recording trace too. Trace can be divided on segments according to type roads. Weak signal in record trace can be modified by correction methods. At the end of this thesis are instructions to using created application.
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Quadcopter Camera Utilization for Scene Context Monitoring in Outdoor Environment
Běl, Petr ; Materna, Zdeněk (referee) ; Beran, Vítězslav (advisor)
This bachelor thesis deals with design and implementation of user interface for quadcopter control by mobile device. Most important design aspect is ability to scene monitoring by camera carried by quadcopter. Selected criterion was solved by control gestures drawn on device display, thus deletion of unnecessary graphical control elements. Comfort for scene monitoring is ensured by multiple ight modes using same set of gestures. For purpose of connecting robot with mobile device in this work has been chosen platform Robot Operating System. Its transfer to mobile device was implemented by RosJava library for the selected operating system Android. Main contribution of this thesis is creation of mobile application which allows to pilot quadcopter and watch transmitted image from its camera not being disturbed by control elements. This advantage is most important for devices with smaller displays like smartphones.
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Development of Application for Electronic Records of Sales
Šťáva, Jan ; Štepník, Štefan (referee) ; Dydowicz, Petr (advisor)
This diploma thesis is focused on the design and development of applications for mobile devices with Android operating system. The main purpose of this application is to fulfil the requirements of law on the Electronic Records of Sales. The thesis describes the theoretical knowledge which is important in the development of the application and describes the design and the whole implementation of the application. The application is implemented in the Java programming language. The thesis also deals with the description of the problem of electronic records of sales and the analysis of the EET product range.
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