Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
A framework for the analysis and optimization of encoding latency for multiview video
Year:2012
Research Areas
  • Processing and signal analysis
Information
Abstract
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.
International
Si
JCR
No
Title
IEEE Journal of Selected Topics in Signal Processing
ISBN
1932-4553
Impact factor JCR
0
Impact info
Volume
10.1109/JSTSP.2012.2193378
Journal number
From page
1
To page
1
Month
SIN MES
Ranking
Participants
  • Autor: Pablo Carballeira Lopez (UPM)
  • Autor: Julian Cabrera Quesada (UPM)
  • Autor: Antonio Ortega Diego (UPM)
  • Autor: Fernando Jaureguizar Nuñez (UPM)
  • Autor: Narciso Garcia Santos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Señales, Sistemas y Radiocomunicaciones
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