Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Block based rate-distortion analysis for quality improvement of synthesized views
Year:2010
Research Areas
  • Processing and signal analysis
Information
Abstract
We present a preliminary study on the Rate-Distortion (RD) gain that can be achieved applying RD optimization techniques in a multiview plus depth encoder. We consider the use of Multiview Video Coding (MVC) for both, color and depth sequences, and evaluate the improvement that can be obtained allowing a quantization parameter (QP) assignment on a macroblock basis compared to the use of a fixed QP for the whole sequence. The optimization criterion is the minimization of the distortion of the synthesized views generated at the receiver. Our motivation for this criterion is to capture the impact of depth coding according to its final purpose: the generation of virtual views. Since a unique objective quality metric for view synthesis artifacts evaluation has not been set yet, the performance of several algorithms for quality evaluation of the target synthesized view have been compared. Beyond obtaining a better RD performance, as could be expected, results also show that optimized synthesized views achieve absolute lower distortion values than the best result of the approach that uses a fixed QP for the whole sequence
International
Si
Congress
3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON), 2010
960
Place
Tampere, Finlandia
Reviewers
Si
ISBN/ISSN
978-1-4244-6377-0
10.1109/3DTV.2010.5506512
Start Date
07/06/2010
End Date
09/06/2010
From page
1
To page
4
Block based rate-distortion analysis for quality improvement of synthesized views
Participants
  • Autor: Pablo Carballeira Lopez (UPM)
  • Participante: Gerhard Tech (Heinrich Hertz Institute (HHI), Fraunhofer Institute for Telecommunications)
  • Autor: Julian Cabrera Quesada (UPM)
  • Participante: Karsten Müller (Heinrich Hertz Institute (HHI), Fraunhofer Institute for Telecommunications)
  • Autor: Fernando Jaureguizar Nuñez (UPM)
  • Participante: Thomas Wiegand (Heinrich Hertz Institute (HHI), Fraunhofer Institute for Telecommunications)
  • Autor: Narciso Garcia Santos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Tratamiento de Imágenes (GTI)
  • Departamento: Señales, Sistemas y Radiocomunicaciones
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