A framework for the analysis and optimization of encoding latency for multiview video

Carballeira López, Pablo and Cabrera Quesada, Julian and Ortega Diego, Antonio and Jaureguizar Núñez, Fernando and García Santos, Narciso (2012). A framework for the analysis and optimization of encoding latency for multiview video. "IEEE Journal of Selected Topics in Signal Processing", v. 6 (n. 5); pp. 583-596. ISSN 1932-4553. https://doi.org/10.1109/JSTSP.2012.2193378.

Description

Title: A framework for the analysis and optimization of encoding latency for multiview video
Author/s:
  • Carballeira López, Pablo
  • Cabrera Quesada, Julian
  • Ortega Diego, Antonio
  • Jaureguizar Núñez, Fernando
  • García Santos, Narciso
Item Type: Article
Título de Revista/Publicación: IEEE Journal of Selected Topics in Signal Processing
Date: September 2012
ISSN: 1932-4553
Volume: 6
Subjects:
Freetext Keywords: Free viewpoint video, low latency, multiview coding, prediction structures, three-dimensional video (3DV), video-conference.
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 30541
DC Identifier: http://oa.upm.es/30541/
OAI Identifier: oai:oa.upm.es:30541
DOI: 10.1109/JSTSP.2012.2193378
Official URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6178266
Deposited by: Memoria Investigacion
Deposited on: 15 Sep 2014 17:57
Last Modified: 22 Apr 2016 00:48
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