Efficient depth map compression exploiting segmented color data

  • Authors:
  • Simone Milani;Pietro Zanuttigh;Marco Zamarin;Soren Forchhammer

  • Affiliations:
  • University of Padova, Department of Information Engineering, Via Gradenigo 6B, 35131, Italy;University of Padova, Department of Information Engineering, Via Gradenigo 6B, 35131, Italy;Technical University of Denmark, Department of Photonics Engineering, Ørsteds Plads B343, 2800 Kgs. Lyngby, Denmark;Technical University of Denmark, Department of Photonics Engineering, Ørsteds Plads B343, 2800 Kgs. Lyngby, Denmark

  • Venue:
  • ICME '11 Proceedings of the 2011 IEEE International Conference on Multimedia and Expo
  • Year:
  • 2011

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Abstract

3D video representations usually associate to each view a depth map with the corresponding geometric information. Many compression schemes have been proposed for multi-view video and for depth data, but the exploitation of the correlation between the two representations to enhance compression performances is still an open research issue. This paper presents a novel compression scheme that exploits a segmentation of the color data to predict the shape of the different surfaces in the depth map. Then each segment is approximated with a parameterized plane. In case the approximation is sufficiently accurate for the target bit rate, the surface coefficients are compressed and transmitted. Otherwise, the region is coded using a standard H.264/AVC Intra coder. Experimental results show that the proposed scheme permits to outperformthe standardH.264/AVC Intra codec on depth data and can be effectively included into multi-view plus depth compression schemes.