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Lossless Image Compression
Komjáthy, Gergely ; Polok, Lukáš (referee) ; Bařina, David (advisor)
This thesis deals with lossless image compression. In this paper are shown some colour models, which can be used for lossless image compression and formulas how to convert them to RGB and vica versa. You can learn predictors, how they work and discription of some of them. There is described the function of arithmetic coder, PPM coder and a brief description of Huffman coding.
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Compression Methods Based on Context Modelling
Gach, Tomáš ; Drábek, Vladimír (referee) ; Bařina, David (advisor)
The aim of this thesis is to describe basic properties of the context-based compression methods. Modelling procedure is presented together with the principle of an arithmetic coding. Gradually the PPM, CTW, and PAQ methods are introduced together with the possible implementation of the basic PPM probability model. The performance of context-based, dictionary and the most currently used methods of data compression is being compared. Based on obtained results, the possible usage of PPM methods is summarized.
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Implementation of Statistical Compression Method
Šreibr, Jakub ; Polok, Lukáš (referee) ; Bařina, David (advisor)
In this thesis statistical methods for data compression are presented. It deals with projecting of compression process and with it's implementation in a form of program library, which is created in language C++. Description and analysis of compression methods are discussed. The results of tests, which were performed with different compression methods are demonstrated.
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Medical Image Data Compression
Balarin, Jakub ; Španěl, Michal (referee) ; Kršek, Přemysl (advisor)
The efficiency of various compress algorithms on medical images is explored in this paper. It try's to find algorithm or group of algorithms with the best compress efficiency. Except classic algorithms the medicine data properties (it contains many similar image points) can be used to reach higher compress level. We verify delta coding efficienty to final compress ratio. At the end the best founded method is presented.
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Compression Methods Based on Context Modelling
Krupička, Matúš ; Drábek, Vladimír (referee) ; Bařina, David (advisor)
This thesis is dedicated to analysis of context-based compression methods, their characteristics and possibilities of their usage. Thesis focuses on and hands out detail overview of statistical method PPM (prediction by partial matching). Program design of this method is described as well as the implementation. Lastly, also the outcomes of this program are compared with already existing implementations of data compression.
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Evalution of suppliers in quality management system in the chosen corporation
KARKOŠKOVÁ, Soňa
Every organization, that wants to be competitive in the market, must constantly improve and find new, better and smarter procedures of individual processes. This thesis describes and analyses the existing quality management system of the suppliers selection and evaluation process in the medium sized engineering company. The work contains recommendations and suggestions for possible improvements of the system.
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Implementation of multiproject management in terms of IT department of international business organization
Tůma, Pavel ; Chlapek, Dušan (advisor) ; Hausmann, Oto (referee)
The diploma thesis deals with the implementation of multiproject management in terms of international business organization and its IT department. The aim of this thesis is to describe the current state of project management in the IT department using methodology for measuring the maturity of processes. Define the management requirements for project portfolio tool, establish criteria for the selection and also tools comparison. After choosing the tool which satisfies all the requirements and criteria, proposal for implementation of this tool will follow. The conclusion is devoted to a summary of the results and proposals for change, to encourage improvement in the level of maturity of the project management process and project portfolio.
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Selection and implementation of open source tool for management and administration of project portfolio in nonprofit organizations
Šimunský, Michal ; Chlapek, Dušan (advisor) ; Kučera, Jan (referee)
The work deals with the choice and implementation of an open source tool for managing a project portfolio management in the organization of o.s. Prostor. The first part of the work aims at theory description including examination of trends in project management tools and open source software. Project management and project portfolio management is increasingly important and increasingly used by companies and organizations in recent years. According to a new study made by Gartner, the use of open source software continues to grow and becomes competitive differently. The main aim of the work was to successfully implement one selected open source tool to the organization that I have found at an early stage. After finding the suitable company, I started to do the main part of my work i.e. the implementation of a selected open source tool for managing projects and its portfolio in this company. This phase started from the choice of the most suitable instrument, by means of analysis of the selected organization, o.s. Prostor, to the final design and implementation itself. I made analysis of the organization and on its basis I chose suitable criteria and their weights for the later selection of a suitable tool. I performed the choice based on multi-criteria analysis in order to maximum objectively select a suitable open source tool for implementation. None of the existing instruments fully met the requirements of the organization o.s. Prostor. Therefore, I assessed finally selected web2project tool in detail and made a proposal for additional programming of missing functionality. After completion of the missing functionality additional programming, I made a proposal of a web2project tool implementation procedure. I suggested four stages of the implementation procedure, which consists of the preparation for the installation environment, the way how to install the tool on the server, planning necessary capacity, and finally training including creation of a demonstration project. Finally, based on this proposal, I installed the tool web2project on the server and run testing and validation of the tool. When performing this work, I gained a lot of valuable experience in all relevant phases of the project cycle management from management to the implementation itself. The organization intends to fully operate the tool early next year, 2012, when they can begin to enter new projects.
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Selection and implementation of open source project and portfolio management tool
Kučera, Jan ; Chlapek, Dušan (advisor) ; Hausmann, Oto (referee)
Companies and other organizations have to change and adapt their strategies and redefine their goals constantly. Actions and steps that are needed in order to achieve the defined goals and to realize the change are often executed in a form of a project. There is no doubt that projects need to be managed in an appropriate way. In organizations where there are more than one project executed in parallel and other projects are being planned or proposed at the same time it is necessary to manage not only the individual projects but the entire portfolio of projects and programmes. Portfolio management is needed to ensure that the selected projects are best aligned with the defined goals and the strategy but this requires an analysis of a large amount of data about current and upcoming projects or about available resources and their utilization. It is not always easy to get all required data and to perform the analysis. This is the reason why deployment of some project and portfolio management software tool should be considered. This thesis deals with a search for suitable open source project and portfolio management tools and with assessment of costs and benefits of deployment of selected open source tool in a hypothetical IT company. The goal of this thesis is to define the term project and portfolio management tool and to find at least five open source tools of this type that are suitable for deployment in an organization. At least one of these tools should be suitable for deployment in the IT company. Another goal is comparison of features and functionality provided by the open source tools with functionality provided by the robust proprietary project and portfolio management solution deployed on premise and with one solution offered in the Software-as-a-Service model. Creation of a business case dealing with implementation of the selected open source tool is the last goal of this thesis. Identification and description of available open source tools and comparison of these tools with representatives of the robust project and portfolio management tools developed and distributed in models different from open source are considered the main benefits of this thesis. The terms "open source software" and "project and portfolio management tool" are defined in the first part of this work. The definition of terms is followed by the definition of the overall approach to the assessment of the open source tools which involves definition of assessment criteria and obligatory requirements. Next part of the work is dedicated to the selection of the open source tools that are suitable for deployment in an organization and which represent candidates for project and portfolio management tools. Assessment of these tools using the defined criteria is performed as the next step which is followed by the comparison with representatives of proprietary project and portfolio management tools. Last part of the work is dedicated to the business case which deals with deployment of the selected open source tool. This work concludes with discussion whether the defined goals were met or not, and with the summary of the results.
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Project management software implementation in the IT company
Šťastný, Petr ; Chlapek, Dušan (advisor) ; Mrázek, Petr (referee)
Práce je zaměřena na problematiku zavádění softwarových nástrojů pro podporu projektového řízení. Na konkrétním projektu implementace ukazuje možnosti dnešních PM nástrojů a navrhuje postup projektu, který umožní co nejlépe využít vlastností zaváděného systému ve vztahu k požadavkům a možnostem organizace. Cílem práce je ukázat, že vhodnout konfigurací lze dosáhnout mnohem širšího využití tohoto typu nástrojů pro řízení celé společnosti
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