Hybrid Contribution of JPEG200 Video Files for Professional Production Centers Reliability and Non-Reliability Transmission File Based in Image Quality Needed

Martínez Barbero, Jesús (2012). Hybrid Contribution of JPEG200 Video Files for Professional Production Centers Reliability and Non-Reliability Transmission File Based in Image Quality Needed. "Recent Patents on Signal Processing", v. 2 (n. 1); pp. 56-67. ISSN 1877-6124. https://doi.org/10.2174/2210686311202010056 .

Descripción

Título: Hybrid Contribution of JPEG200 Video Files for Professional Production Centers Reliability and Non-Reliability Transmission File Based in Image Quality Needed
Autor/es:
  • Martínez Barbero, Jesús
Tipo de Documento: Artículo
Título de Revista/Publicación: Recent Patents on Signal Processing
Fecha: Abril 2012
Volumen: 2
Materias:
Escuela: E.U. de Informática (UPM) [antigua denominación]
Departamento: Organización y Estructura de la Información [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

ATM, SDH or satellite have been used in the last century as the contribution network of Broadcasters. However the attractive price of IP networks is changing the infrastructure of these networks in the last decade. Nowadays, IP networks are widely used, but their characteristics do not offer the level of performance required to carry high quality video under certain circumstances. Data transmission is always subject to errors on line. In the case of streaming, correction is attempted at destination, while on transfer of files, retransmissions of information are conducted and a reliable copy of the file is obtained. In the latter case, reception time is penalized because of the low priority this type of traffic on the networks usually has. While in streaming, image quality is adapted to line speed, and line errors result in a decrease of quality at destination, in the file copy the difference between coding speed vs line speed and errors in transmission are reflected in an increase of transmission time. The way news or audiovisual programs are transferred from a remote office to the production centre depends on the time window and the type of line available; in many cases, it must be done in real time (streaming), with the resulting image degradation. The main purpose of this work is the workflow optimization and the image quality maximization, for that reason a transmission model for multimedia files adapted to JPEG2000, is described based on the combination of advantages of file transmission and those of streaming transmission, putting aside the disadvantages that these models have. The method is based on two patents and consists of the safe transfer of the headers and data considered to be vital for reproduction. Aside, the rest of the data is sent by streaming, being able to carry out recuperation operations and error concealment. Using this model, image quality is maximized according to the time window. In this paper, we will first give a briefest overview of the broadcasters requirements and the solutions with IP networks. We will then focus on a different solution for video file transfer. We will take the example of a broadcast center with mobile units (unidirectional video link) and regional headends (bidirectional link), and we will also present a video file transfer file method that satisfies the broadcaster requirements.

Más información

ID de Registro: 19636
Identificador DC: http://oa.upm.es/19636/
Identificador OAI: oai:oa.upm.es:19636
Identificador DOI: 10.2174/2210686311202010056
URL Oficial: http://eurekaselect.com/96169/article/hybrid-contribution-jpeg200-video-files-professional-production-centers-reliability
Depositado por: Archivo Digital UPM
Depositado el: 06 Sep 2013 10:23
Ultima Modificación: 21 Abr 2016 20:37
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