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Using Metric Indexes For Effective and Efficient Multimedia Exploration
Čech, Přemysl ; Lokoč, Jakub (advisor) ; Skopal, Tomáš (referee)
The exponential growth of multimedia data challenges effectiveness and efficiency of the state-of-the- art retrieval techniques. In this thesis, we focus on browsing of large datasets using exploration approaches where query cannot be particularly expressed or where the need of some general notion of the dataset is required. More specifically, we study exploration scenarios utilizing the metric access method PM-Tree which natively creates a hierarchy of nested metric regions. We enhance the PM- Tree for the exploration purposes and define different traversing and querying strategies. Further, we investigate range multi-query (range query defined by multiple objects) approaches. We propose new effective and efficient cut-region range query and compare the new query with other approaches for efficient multi-query processing. Finally, we implemented all new methods and strategies for the PM- Tree into multimedia exploration framework and tested browsing algorithms on a game-like demo application.
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Information system for sports activities
Jareš, Antonín ; Kopecký, Michal (advisor) ; Čech, Přemysl (referee)
Goal of this thesis is to design and implement an information system allowing amateur sport clubs and clubs participating in lower sport competitions to easily administrate their content, log club events, players, statistics and use a photo-gallery all in one place. This thesis also puts emphasis on easy future extensibility and on its user's security. To achieve these goals, the system uses freely available technologies - PHP, MySQL, Apache, Nette Framework and others. The application provides its functionality with respect to the level of privileges assigned to the user role as referee, coach, player or administrator.
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Using Metric Indexes For Effective and Efficient Multimedia Exploration
Čech, Přemysl ; Lokoč, Jakub (advisor)
The exponential growth of multimedia data challenges effectiveness and efficiency of the state-of-the- art retrieval techniques. In this thesis, we focus on browsing of large datasets using exploration approaches where query cannot be particularly expressed or where the need of some general notion of the dataset is required. More specifically, we study exploration scenarios utilizing the metric access method PM-Tree which natively creates a hierarchy of nested metric regions. We enhance the PM- Tree for the exploration purposes and define different traversing and querying strategies. Further, we investigate range multi-query (range query defined by multiple objects) approaches. We propose new effective and efficient cut-region range query and compare the new query with other approaches for efficient multi-query processing. Finally, we implemented all new methods and strategies for the PM- Tree into multimedia exploration framework and tested browsing algorithms on a game-like demo application.
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Effective known-item search in an initial query result set in the VIRET tool
Škrhák, Vít ; Lokoč, Jakub (advisor) ; Čech, Přemysl (referee)
Modern methods for effective video retrieval combine several research areas, especi- ally similarity search, machine learning and data visualization. Selected approaches from these areas are integrated to complex search systems, which are tested/compared at in- ternational video search competitions. An example of such system is VIRET developed at KSI MFF UK. Although VIRET represents a state-of-the-art system, it is necessary to further analyze and develop ranking models and variants of interfaces for result set browsing. This bachelor thesis focuses on implementation and testing of a method for result set visualization in the 2D grid using self-organizing maps and (hierarchical) brow- sing. The implemented method is experimentally compared with sequential browsing in the VIRET tool. 1
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Content-based exploration of unstructured data
Čech, Přemysl ; Lokoč, Jakub (advisor) ; Barthel, Kai Uwe (referee) ; Gudmundsson, Gylfi Thor (referee)
Effective analysis, searching and browsing throughout arbitrary multimedia collections is still a challenging task. To perform a search among multimedia objects, first, a similarity model has to be defined. Such a model establishes methods describing how the content of individual objects is processed and how key features and descriptors, that are used for modeling similarity between objects, are formed. This task is not trivial since there can be many ways of determining how to comprehend the content of multimedia data. Furthermore, with the growing size of contemporary database collections, multimedia retrieval and exploration are extremely computationally intensive. Hence, researchers investigate support indexing structures that can evaluate similarity queries and can respond to user's queries in almost real-time even on datasets counting billions of objects. Another very important aspect of a retrieval system is the user interface for defining queries as well as presenting retrieved results. A multimedia system should offer various inputs for formulating user's queries, especially for situations in which a user cannot provide an ideal query example. Finally, a well- arranged and easy to read interface for visualization of retrieved results is essential for the success of a multimedia exploration and...
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FAHEX - Format Aware HEXeditor
Pilař, Tomáš ; Ježek, Pavel (advisor) ; Čech, Přemysl (referee)
Whenever a programmer needs an universal tool for editing binary files, he/she uses a binary editor, usually a hex editor. However, editing a file using the binary editor is tedious and error prone. The goal of this thesis is to create a hex editor that on top of standard hexadecimal and character views provides a structured view of the file contents, generated from a user supplied format description. The structured view enables to inspect the file structure and change whole values instead of individual bytes and thereby significantly simplifies the editing. Format is described in extensible language XAML developed by Microsoft corporation. Thesis implements a framework for creating new description elements for the language and within the framework a set of basic description elements useful for description of many formats. Thesis also implements a framework for creating new elements of the structured view that serve as an user interface for the description elements. Again, a set of basic view elements is implemented in this framework. The two frameworks are interconnected with a plugin system that enables to create various user interfaces for the same format description. Frameworks together with the plugin system enable the user to extend the description language and the structured view without...
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Using Metric Indexes For Effective and Efficient Multimedia Exploration
Čech, Přemysl ; Lokoč, Jakub (advisor)
The exponential growth of multimedia data challenges effectiveness and efficiency of the state-of-the- art retrieval techniques. In this thesis, we focus on browsing of large datasets using exploration approaches where query cannot be particularly expressed or where the need of some general notion of the dataset is required. More specifically, we study exploration scenarios utilizing the metric access method PM-Tree which natively creates a hierarchy of nested metric regions. We enhance the PM- Tree for the exploration purposes and define different traversing and querying strategies. Further, we investigate range multi-query (range query defined by multiple objects) approaches. We propose new effective and efficient cut-region range query and compare the new query with other approaches for efficient multi-query processing. Finally, we implemented all new methods and strategies for the PM- Tree into multimedia exploration framework and tested browsing algorithms on a game-like demo application.
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Qubit - A System for Translations Management and Authoring
Cincibuch, Jindřich ; Ježek, Pavel (advisor) ; Čech, Přemysl (referee)
Title: Qubit - A System for Translations Management and Authoring Author: Jindøich Cincibuch Department: Department of Distributed and Dependable Systems Supervisor: Mgr. Pavel Je¾ek, Ph.D., Department of Distributed and Dependable Systems Abstract: The goal of this thesis was to create a software solution that will allow translation agencies to better collaborate with freelance translators who do not own expensive translation tools. One part of the software solution is an information system with a graphical appli- cation that will allow translation agency staff to remotely assign documents for translation and manage them. Another part is a graphic application for freelance translators with an integrated graphic translations editor, in which translators will translate speci ed les. The software solution is primarily designed to sup- port the SDLXLIFF commercial translation format so that it can be reused in the original SDL Trados Studio application. In the text part of the thesis we present in detail the issue of translations and formats used for their sharing. It also presents the design, analysis and deve- lopment of the mentioned information system and graphical user applications. Subsequently, the structure of the implemented software solution is described. Keywords: Sdlxli tmx translation editor wcf...
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Information system for sports activities
Jareš, Antonín ; Kopecký, Michal (advisor) ; Čech, Přemysl (referee)
Goal of this thesis is to design and implement an information system allowing amateur sport clubs and clubs participating in lower sport competitions to easily administrate their content, log club events, players, statistics and use a photo-gallery all in one place. This thesis also puts emphasis on easy future extensibility and on its user's security. To achieve these goals, the system uses freely available technologies - PHP, MySQL, Apache, Nette Framework and others. The application provides its functionality with respect to the level of privileges assigned to the user role as referee, coach, player or administrator.
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Using Metric Indexes For Effective and Efficient Multimedia Exploration
Čech, Přemysl ; Lokoč, Jakub (advisor) ; Skopal, Tomáš (referee)
The exponential growth of multimedia data challenges effectiveness and efficiency of the state-of-the- art retrieval techniques. In this thesis, we focus on browsing of large datasets using exploration approaches where query cannot be particularly expressed or where the need of some general notion of the dataset is required. More specifically, we study exploration scenarios utilizing the metric access method PM-Tree which natively creates a hierarchy of nested metric regions. We enhance the PM- Tree for the exploration purposes and define different traversing and querying strategies. Further, we investigate range multi-query (range query defined by multiple objects) approaches. We propose new effective and efficient cut-region range query and compare the new query with other approaches for efficient multi-query processing. Finally, we implemented all new methods and strategies for the PM- Tree into multimedia exploration framework and tested browsing algorithms on a game-like demo application.
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