MJPEG Real-Time Transmission in Industrial Environments Using a CBR Channel

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2006

Autores

Silvestre, J (Autor) Outra; Luis Almeida (Autor) Outra; Marau, R (Autor) Outra; Pedreiras, P (Autor) Outra

Ata de Conferência Internacional

Título: PROCEEDINGS OF WORLD ACADEMY OF SCIENCE, ENGINEERING AND TECHNOLOGY, VOL 16

Páginas: 149-+

Conference of the World-Academy-of-Science-Engineering-and-Technology

Venice, ITALY, NOV 24-26, 2006

Indexação

ISI Web of Knowledge - 0 Citações

Outras Informações

ID Authenticus: P-00P-3PJ

Abstract (EN): Currently, there are many local area industrial networks that can give guaranteed bandwidth to synchronous traffic, particularly providing CBR channels (Constant Bit Rate), which allow improved bandwidth management. Some of such networks operate over Ethernet, delivering channels with enough capacity, specially with compressors, to integrate multimedia traffic in industrial monitoring and image processing applications with many sources. In these industrial environments where a low latency is an essential requirement, JPEG is an adequate compressing technique but it generates VBR traffic (Variable Bit Rate). Transmitting VBR traffic in CBR channels is inefficient and current solutions to this problem significantly increase the latency or further degrade the quality. In this paper an R(q) model is used which allows on-line calculation of the JPEG quantification factor. We obtained increased quality, a lower requirement for the CBR channel with reduced number of discarded frames along with better use of the channel bandwidth.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3