Memorias de investigación
Artículos en revistas:
A framework for the analysis and optimization of encoding latency for multiview video
Año:2012
Áreas de investigación
  • Procesado y análisis de la señal
Datos
Descripción
We present a novel framework for the analysis and optimization of encoding latency for multiview video. Firstly, we characterize the elements that have an influence in the encoding latency performance: (i) the multiview prediction structure and (ii) the hardware encoder model. Then, we provide algorithms to find the encoding latency of any arbitrary multiview prediction structure. The proposed framework relies on the directed acyclic graph encoder latency (DAGEL) model, which provides an abstraction of the processing capacity of the encoder by considering an unbounded number of processors. Using graph theoretic algorithms, the DAGEL model allows us to compute the encoding latency of a given prediction structure, and determine the contribution of the prediction dependencies to it. As an example of DAGEL application, we propose an algorithm to reduce the encoding latency of a given multiview prediction structure up to a target value. In our approach, a minimum number of frame dependencies are pruned, until the latency target value is achieved, thus minimizing the degradation of the rate-distortion performance due to the removal of the prediction dependencies. Finally, we analyze the latency performance of the DAGEL derived prediction structures in multiview encoders with limited processing capacity.
Internacional
Si
JCR del ISI
Si
Título de la revista
IEEE Journal of Selected Topics in Signal Processing
ISSN
1932-4553
Factor de impacto JCR
0
Información de impacto
Volumen
DOI
10.1109/JSTSP.2012.2193378
Número de revista
Desde la página
583
Hasta la página
596
Mes
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Tratamiento de Imágenes (GTI)