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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Implementation of P [rho]-domain rate control

Xu, Yixiao. January 2004 (has links)
Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 59-61). Also available on the Internet.
32

Logarithmic number system (LNS) in MPEG encoding system /

Ruan, Jie, January 2006 (has links)
Thesis (Ph. D.)--Lehigh University, 2006. / Includes vita. Includes bibliographical references (leaves 85-95).
33

FPGA-based MPEG-4 video encoder SOPC design with performance acceleration of motion estimation block a thesis presented to the faculty of the Graduate School, Tennessee Technological University /

Majgaonkar, Seemantini, January 2009 (has links)
Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on June 29, 2010). Bibliography: leaves 68-70.
34

Bandwidth-aware video transmission with adaptive image scaling

Abraham, Arun S. January 2003 (has links)
Thesis (M.E.)--University of Florida, 2003. / Title from title page of source document. Includes vita. Includes bibliographical references.
35

A wavelet based low power H.264 encoder and decoder /

Nehrur Ravi, Arunkumar, January 2008 (has links)
Thesis. / Includes vita. Includes bibliographical references (leaves 67-68)
36

Development of a MPEG-7 based multimedia content description and retrieval tool for internet protocol television (IPTV)

Ncube, Prince Daughing Ngqabutho January 2017 (has links)
Search and retrieval of multimedia content from open platforms such as the Internet and IPTV platforms has long been found to be hugely inefficient. It has been noted that a major cause of such inefficient results is the improper labeling or incomplete description of multimedia content by its creators. The lack of adequate description of video content by the proper annotation of video content with the relevant metadata leads to poor search and retrieval yields. The creation of such metadata itself is a major problem as there are various metadata description standards which users could employ. On the other hand there are tools such as FFprobe that can retrieve important features of video that can be used in searching and retrieval. The combination of such tools and metadata description standards could be the solution to the metadata problem. The Multimedia Content Description Interface (MPEG-7) is an example of a metadata description standard. It has been adopted by TISPAN for the description of IPTV multimedia content. The MPEG-7 standard is rather complex, seeing as it has over 1200 global Descriptors and Description Schemes which a user would have to know in order to implement such technology. This complexity is a nuisance when we consider the existence of multitudes of amateur video producers. These multimedia content creators have no idea how to use the MPEG-7 standard to annotate their creations with metadata. Consequently, overloading of the IPTV platform with content that has not been annotated in a standardized manner occurs, making search and retrieval of the multimedia content (videos, in this instance) inefficient. Therefore, it was imperative to try and determine whether the use of the MPEG-7 standard could be made much easier by creating a tool that is MPEG-7 enabled which will allow for the annotation of video content by any user without concerning themselves about how to use the MPEG-7 standard. In attempting to develop a tool for metadata generation, it was incumbent for us to understand the issues associated with metadata generation for users wishing to create IPTV services. An extensive literature review on IPTV standardization was carried out to determine the issues associated with metadata generation for IPTV and their proposed solutions. An experimental research approach was taken in an attempt to figure out if our proposed solution to the lack of technical expertise by users about the MPEG-7 standard could be the final solution to the metadata generation problem. We developed a Multimedia Content Description and Management System (MCDMS) prototype which enabled us to describe video content by annotating it with 16 different metadata elements and storing the descriptions in XML MPEG-7 format. Incremental development and re-use oriented development were used during the development phase of this research. The MCDMS underwent functional testing; smoke testing of the individual system components and Big Bang integration testing for the combined components. Our results indicate that the more metadata is appended to a video as description the better it is to search for and retrieve. The MCDMS hides the complexity of MPEG-7 metadata creation from the users. With the effortless creation of MPEG-7 based metadata, it becomes easier to annotate videos. Consequently, search and retrieval of video content becomes more efficient. It is important to note that the description of multimedia content remains a complex feat. Even with the metadata elements laid out for users, there still exist other issues that affect metadata creation such as polysemy and the semantic gap. However, the provision of a tool that does the MPEG-7 standardizing behind the scenes for users when they upload a video makes the description of multimedia content in a standardized manner a much easier feat to achieve.
37

Uma metodologia para segmentação e indexação de vídeos educacionais orientada a gestão do conhecimento

Torrens, Edson Wilson January 2005 (has links)
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da Computação. / Made available in DSpace on 2013-07-16T01:36:19Z (GMT). No. of bitstreams: 1 221367.pdf: 1132156 bytes, checksum: 0a4a1c09ee4ea4a796432b7d837a0198 (MD5) / Cada vez mais cresce a necessidade de novas abordagens no desenvolvimento de Sistemas de Gerenciamento de Ensino (LMS - Learning Management Systems) que permitam o compartilhamento de conhecimentos entre estudante e instrutor através do ambiente de aprendizado estruturado. Um LCMS (Learning Content Management System) é um sistema que permite o gerenciamento de objetos educacionais (por exemplo, textos e vídeos) permitindo a elaboração e acesso a esses objetos. Esta dissertação considera especialmente LCMS para gerenciamento de vídeos educacionais. Neste tipo de sistema, formas de segmentação e indexação de vídeos devem ser estudadas no sentido de melhor aproveitar seu potencial educacional. No trabalho de pesquisa aqui apresentado, é investigada a aplicação da Teoria da Criação do Conhecimento na segmentação e a indexação de vídeos educacionais visando um melhor aproveitamento dos conteúdos educacionais. Mais especificamente, nesta dissertação propõe-se uma metodologia para segmentação e indexação de vídeos educacionais utilizando o padrão MPEG-7 dentro da abordagem da Teoria da Criação do Conhecimento. Foi também implementada uma ferramenta de geração de objetos MPEG-7 aplicando parte da metodologia proposta.
38

Modelo e implementação de um serviço de datacasting para televisão digital

Piccioni, Carlos Alexandre January 2005 (has links)
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia Elétrica / Made available in DSpace on 2013-07-15T23:01:57Z (GMT). No. of bitstreams: 1 221466.pdf: 1101553 bytes, checksum: 186aa359357eb479e774a391068292f1 (MD5) / A difusão de dados, conhecida como datacasting, se mostra como a base para o surgimento de novos serviços na Televisão Digital (TVD). Neste contexto, este trabalho busca propor e implementar um modelo fim a fim de datacasting, direcionado à difusão de aplicativos e demais dados correlacionados, que suporte esses novos serviços. O modelo foi baseado em especificações abertas de TVD, assim como em trabalhos encontrados na Literatura. Foram estudados os mecanismos de difusão de dados sobre os padrões de TVD, utilizados pelos sistemas abertos, assim como investigadas suas principais características, vantagens e desvantagens. A implementação foi concretizada através do desenvolvimento de parte dos componentes previstos no modelo, e da integração destes com determinadas soluções de softwares livres já existentes.
39

The specification and design of a prototype 2-D MPEG-4 authoring tool

Viljoen, Deon Walter January 2003 (has links)
The purpose of this project was the specification, design and implementation of a prototype 2-D MPEG-4 authoring tool. A literature study was conducted of the MPEG-4 standard and multimedia authoring tools to determine the specification and design of a prototype 2- D MPEG-4 authoring tool. The specification and design was used as a basis for the implementation of a prototype 2-D MPEG-4 authoring tool that complies with the Complete 2-D Scene Graph Profile. The need for research into MPEG-4 authoring tools arose from the reported lack of knowledge of the MPEG-4 standard and the limited implementations of MPEG-4 authoring tools available to content authors. In order for MPEG-4 to reach its full potential, it will require authoring tools and content players that satisfy the needs of its users. The theoretical component of this dissertation included a literature study of the MPEG-4 standard and an investigation of relevant multimedia authoring systems. MPEG-4 was introduced as a standard that allows for the creation and streaming of interactive multimedia content at variable bit rates over high and low bandwidth connections. The requirements for the prototype 2-D MPEG-4 authoring system were documented and a prototype system satisfying the requirements was designed, implemented and evaluated. The evaluation of the prototype system showed that the system successfully satisfied all its requirements and that it provides the user with an easy to use and intuitive authoring tool. MPEG-4 has the potential to satisfy the increasing demand for innovative multimedia content on low bandwidth networks, including the Internet and mobile networks, as well as the need expressed by users to interact with multimedia content. This dissertation makes an important contribution to the understanding of the MPEG-4 standard, its functionality and the design of a 2-D MPEG-4 Authoring tool. Keywords: MPEG-4; MPEG-4 authoring; Binary Format for Scenes.
40

A scheme for scalable mpeg-1 video for different available network bandwidths

Chen, Jing 01 January 1999 (has links)
No description available.

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