National Repository of Grey Literature 10 records found  Search took 0.01 seconds. 
Stabilization of image sequence without decrement of its resolution
Otruba, Vítězslav ; Říha, Kamil (referee) ; Číka, Petr (advisor)
The shake that affects the video camera during taking of the footage degrades the level of the viewer experience. This article contains the design of the method that stabilizes the stored footage and fills in the gaps in the separate frames, so the picture resolution remains the same after the process.
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.
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.
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.
Education with multimedia technologies
Jakoubková, Jana ; Husa, Jiří (advisor) ; Milena, Milena (referee)
The bachelor's thesis "Education with multimedia technologies" was focused on the analysis of educational videos from the field of human resources, which were located on the widespread internet site for sharing videos in Czech language. Specifically it was focused on the three topics of human resources, which were essential for job seekers on the labor market. From each topic was selected twenty-five educational videos. That created a sample of analysis of 75 videos. These videos were analyzed according to chosen criterias. The criterias were the theme, the length, the quality of the record, the resource, the educational goal, the target group and the summary and the evaluation of the videos. Data from the analysis were registered into the table according to a predetermined manner. It was found that educational videos on YouTube were an average of 27.64 minutes long, the quality of recorded video was average to high, and the largest source, what added instructional videos were individuals that were adding these videos on YouTube to selfpresent themselves as the experts in the field and to offer their services. The analysis also showed that only 19 % of educational videos were created correctly in terms of education. It followed that YouTube was not the right place for education in correctness of education.
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.
Stabilization of image sequence without decrement of its resolution
Otruba, Vítězslav ; Říha, Kamil (referee) ; Číka, Petr (advisor)
The shake that affects the video camera during taking of the footage degrades the level of the viewer experience. This article contains the design of the method that stabilizes the stored footage and fills in the gaps in the separate frames, so the picture resolution remains the same after the process.
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.
Workflow v digitálním videu a vícekriteriální porovnání střihových programů
Skala, Jakub ; Horný, Stanislav (advisor) ; Vilím, Tomáš (referee)
Cílem práce je vytvoření vícekriteriální analýzy střihových programů a následné navržení řešení pro různé typy uživatelů. Součástí je i pohled na základní workflow v digitálním videu, protože se stále častěji setkáváme s přechodem filmu do života běžných lidí. Nejdříve bude popsán vznik a klíčové milníky ve vývoji filmového průmyslu, které předcházeli masovému rozvoji digitálních video technologií. Následně bude popsáno základní workflow a pojmy pro pořízení, střih a šíření digitálního záznamu. V další části budou představeny střihové programy a provedeno jejich porovnání. Dále se budeme věnovat využívání digitálního videa v relativně nových oblastí. Závěr bude věnován budoucnosti využívání a šíření.
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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