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Soares-2016a

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Article

Title Spatial error concealment for intra-coded depth maps in multiview video-plus-depth
Author Pedro Assunção, Sylvain T. A. Marcelino, Salviano F. S. P. Soares, et al
Journal Multimedia Tools and Applications
Volume 76
Number 12
Pages 13835-13858
Month June
Year 2017
DOI 10.1007/s11042-016-3766-7
Group Information Systems and Processing
Group (before 2015)
Indexed by ISI Yes

Transmission errors or packet loss in depth maps have great impact on the decoding quality and view synthesis of 3D and multiview video. Thus efficient methods to recover corrupted depth data are critical functions for accurate view rendering. This paper proposes an error concealment method for intra-coded depth maps, based on spatial intra and inter-view methods, which exploit neighbouring data of depth and colour images received error-free. A novel three-stage processing algorithm is devised to reconstruct sharp depth transitions (i.e. lost depth contours), using a disparity map and geometric interpolation based on parametric Bézier curves. The simulation results obtained from different views of various MVD sequences, for different packetisation modes and a wide range of packet loss rates (PLR), show that the proposed method consistently leads to quality improvement of synthesised images in comparison with reference methods.