Video Scalability
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Análise comparativa de dois modelos de retransmissão adaptativa de vídeo para múltiplos pontos em redes unicast / Comparative analysis of two models of adaptive video retransmission to multiple points in unicast networks
Este trabalho de graduação apresenta, analisa e compara, com base em implementação e testes, dois modelos de retransmissão adaptativa de vídeo. O primeiro, o transcodificador de vídeo, tem como função recodificar os quadros recebidos segundo os parâmetros exigidos por cada um dos receptores. Já o roteador de vídeo escalável, apenas exclui pacote
Publicado em: 2011
-
2. Overlays building protocol to video distribution in P2P networks. / Protocolo para a construção de overlays para distribuição de streamings em redes P2P.
The Internet development has leveraged several kinds of application that depends on its infrastructure, such as P2P applications to voice/video streaming transmission. These applications have a plenty of requirements, such as bandwidth, latency, jitter, scalability, availability, and so on, that should be fulfilled in order to achieve the required level of Q
Publicado em: 2009
-
3. Transmissões de vídeo ao vivo geradas por usuários: caracterização e análise
In the past few years, we have observed a huge revolution in terms of the way we create and distribute video on the Internet. With the popularization of digital cameras and with the increase of Internet access speeds, video content creation and distribution on the Internet has grown considerably. There are a number of recently created companies which offer t
Publicado em: 2009
-
4. The Brazilian digital television system access device architecture
In early 2003, the Brazilian government accelerated the decision process on analog to digital transition of terrestrial TV broadcast infrastructure, naming this initiative The Brazilian Digital Television System (SBTVD). This paper describes the access device architecture we have proposed for the SBTVD, as well as related issues. We focused on several requir
Journal of the Brazilian Computer Society. Publicado em: 2007-03
-
5. Security issues in online games / Aspectos de segurança em jogos online
Online and mobile games are two of the fastest growing niches inside the billionaire game industry. Countries like Brazil, Russia and China are strongly affected by piracy and publishers see in networks a tool to reduce the impact of such issue. This online expansion, however, brings to gaming the usual attention points on network computing: availability, sc
Publicado em: 2007
-
6. Virtual layering and efficient merging in non-cooperative multicast trees
A critical problem faced by feedback-merger mechanisms is the lack of information that is discarded due to the hidden nodes in multicast trees. A node is said to be hidden from another if it is located in a sub tree that is a result from a fork in any upstream node. We propose in this paper the virtual layering scheme to avoid the problem caused by hidden-no
Journal of the Brazilian Computer Society. Publicado em: 2001
-
7. Transmissão robusta de video em pacotes
The objective of this work is to study the quality of video signals transmitted over wideband networks subject to packet losses. Increased transmission robustness is achieved by "scalability" or layered segmentation of the video signal. We consider spectral separation and requantization methods of scalability, as well as different levels of packet losses and
Publicado em: 1998