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Techniques for movement detection and prediction in video sequences
Nešpor, Zdeněk ; Říha, Kamil (referee) ; Číka, Petr (advisor)
This bachelor thesis deals with techniques for motion detection and prediction in digital images. After an initial consideration over the need of digital video compression a basic concepts of digital video is introduced. The MPEG-1 video compression standard and using of motion detection and prediction inside the compression technique is described in the next part. The following part describes motion estimation methods. The most widely used motion estimation methods, block matching methods, are described in detail together with proposed improvements. The second part of this paper concentrates on a developed application in C++ language that demonstrates performance of described motion estimation techniques on slow, medium and fast motion. The results of testing and suitable method for each motion type is in the end of this work.
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Temporal Tone-Mapping Methods for HDR Video
Staněk, Jiří ; Musil, Petr (referee) ; Nosko, Svetozár (advisor)
The diploma thesis provides the theoretical background needed to understand the complex topic of high dynamic range, and deals with the implementation of an innovative method for temporal video tone-mapping. At first, high dynamic range image acquisition, storage and processing are described. Afterwards, a general introduction to tone-mapping, description of undesirable image artifacts and an overview of existing state-of-the-art algorithms are presented. The part which follows focuses on the implementation of the chosen method and proposes several additional enhancements of the initially selected algorithm. Based on the information provided, an application with an intuitive graphical interface, which can be used for temporal HDR video tone-mapping, has been created. Finally, the the achieved results are demonstrated and visually compared with existing methods for temporal video tone-mapping.
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Temporal Tone-Mapping Methods for HDR Video
Staněk, Jiří ; Musil, Petr (referee) ; Nosko, Svetozár (advisor)
The diploma thesis provides the theoretical background needed to understand the complex topic of high dynamic range, and deals with the implementation of an innovative method for temporal video tone-mapping. At first, high dynamic range image acquisition, storage and processing are described. Afterwards, a general introduction to tone-mapping, description of undesirable image artifacts and an overview of existing state-of-the-art algorithms are presented. The part which follows focuses on the implementation of the chosen method and proposes several additional enhancements of the initially selected algorithm. Based on the information provided, an application with an intuitive graphical interface, which can be used for temporal HDR video tone-mapping, has been created. Finally, the the achieved results are demonstrated and visually compared with existing methods for temporal video tone-mapping.
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Techniques for movement detection and prediction in video sequences
Nešpor, Zdeněk ; Říha, Kamil (referee) ; Číka, Petr (advisor)
This bachelor thesis deals with techniques for motion detection and prediction in digital images. After an initial consideration over the need of digital video compression a basic concepts of digital video is introduced. The MPEG-1 video compression standard and using of motion detection and prediction inside the compression technique is described in the next part. The following part describes motion estimation methods. The most widely used motion estimation methods, block matching methods, are described in detail together with proposed improvements. The second part of this paper concentrates on a developed application in C++ language that demonstrates performance of described motion estimation techniques on slow, medium and fast motion. The results of testing and suitable method for each motion type is in the end of this work.
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Changes and development of digital video
Černý, Martin ; Čermák, Radim (advisor) ; Lisý, Martin (referee)
Final thesis deals with changes and development of digital video from the perspective of ordinary users. The aim is to describe how the amateur technology is getting closer to the professional video processing. This will be achieved by a description of the historical development of digital media and a comparison of amateur and professional technology. The part of thesis also deals with prerequisites for this development, which is the new camcorders, more high-efficiency computers, amateur editing programs and new approaches to video compression. The text provides a brief introduction to the topic of digital video, an overview of current technologies and asks questions about what the implications of this change are and what those changes could mean for the future.
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Video na WEBu
Skořepa, Jakub ; Horný, Stanislav (advisor) ; Vilím, Tomáš (referee)
Práce shrnuje problematiku digitálního videa na WEBu a nastiňuje možnosti využití videa, jako velice účinného způsobu přenosu informací po internetu. Dále práce identifikuje způsoby využití digitálního videa v praxi a pro jednotlivé způsoby použití stanovuje doporučení týkající se konkrétních charakteristik digitálního videa. Vyjadřuje se také k budoucím trendům v oblasti digitálního videa na WEBu. Pro porozumění závěrečných kapitol jsou nejdříve rozebrány obecné principy digitálního videa. Proto se v první části práce zaměřuje na digitální video obecně a s ním spojené pojmy. Poté jsou rozebírány způsoby získávání záznamů pro internetové použití. Následuje souhrn možných využití videa na webu. V další části jsou rozebrány nejpoužívanější formáty a s nimi spojené používané algoritmy komprese. Celá jedna kapitola je věnovaná problematice řízení digitálních práv ? DRM. Poté se podíváme na platformy pro běžné přehrávání po internetu využívající streaming videa, jakožto velice perspektivní technologie. Následně jsou zmíněny některé aspekty distribuce digitálního videa a je analyzován stav internetových videopůjčoven v ČR. Práce dále identifikuje požadavky jednotlivých způsobů použití a je navrženo řešení se zohledněním celé problematiky, tzn. jaký formát a jaké nastavení na které platformě použít. V závěru je zhodnocena celá problematika a shrnuty stěžejní body práce. Nakonec jsou identifikovány trendy v oblasti digitálního videa a je předpovězen vývoj dané problematiky.
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