Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Depth Video Coding for Free Viewpoint Video Oriented to the Synthetic View Perceptual Quality
Year:2013
Research Areas
  • Processing and signal analysis
Information
Abstract
In this paper we propose a novel depth encoding algorithm based on the synthetic view perceptual quality optimization. In Free View-point Video, depth sequences are never shown to the observer but they are used for the view synthesis. Due to the compression quality losses, the depth distortion generates errors in the synthetic view pixel position. We propose to encode the depth sequences by a novel approach, divided into two parts. The first one is a rate distortion optimization method based on the minimization of the synthetic view pixel position error. The second one is an extension of the first one and improves the performance taking into account the perceptual distortion, evaluated by exploiting the Human Visual System characteristics described by the Just Noticeable Distortion. However, the Just Noticeable Distortion is a model designed for the traditional video, hence we also propose a Just Noticeable Pixel Displacement evaluation method which, considering the synthetic view perceptual distortion, is able to estimate when an error in the synthetic view pixel position is not noticed. The results show how the proposed algorithm not only improves the synthetic view quality measured by the Video Quality Metric (highly correlated to the subjective quality) but also the objective quality measured by the PSNR, with an achieved improvement of 0.3 dB with a corresponding bit saving of 13%.
International
Si
Congress
IEEE International Conference on Image Processing (ICIP)
960
Place
Melbourne, Australia
Reviewers
Si
ISBN/ISSN
978-1-4799-2341-0
10.1109/ICIP.2013.6738426
Start Date
15/09/2013
End Date
18/09/2013
From page
2068
To page
2071
Depth Video Coding for Free Viewpoint Video Oriented to the Synthetic View Perceptual Quality
Participants
  • Autor: Gianluca Cernigliaro . (UPM)
  • Autor: Fernando Jaureguizar Nuñez (UPM)
  • Autor: Julian Cabrera Quesada (UPM)
  • 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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