Reconstruction-Based Subband Image Coding for UDP Transmissions over the Internet
Journal of VLSI Signal Processing Systems
Journal of Visual Communication and Image Representation
Prescription-based error concealment technique for video transmission on error-prone channels
Journal of Visual Communication and Image Representation
Spatial error concealment with sequence-aligned texture modeling and adaptive directional recovery
Journal of Visual Communication and Image Representation
Intra-frame loss concealment based on directional extrapolation
Image Communication
Adaptive spatial concealment of damaged coded images
MCPR'12 Proceedings of the 4th Mexican conference on Pattern Recognition
MICAI'12 Proceedings of the 11th Mexican international conference on Advances in Artificial Intelligence - Volume Part I
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An algorithm using multidirectional interpolation is presented for error concealment. In the algorithm, an edge classifier analyzes the values of pels in the blocks surrounding the missing block and determines which edge directions cut through the missing block. Interpolations are performed on a local pel neighborhood along the directions specified by the edge classifier. Then a mixing operation is used to restore the missing block by extracting the features obtained from the different directional interpolations and combining them together. The method of multidirectional interpolation and image mixing has demonstrated very good results when a sufficiently large neighborhood of correlated pels exists. This method of spatial interpolation can be combined with temporal interpolation to provide for a powerful error concealment technique for compressed video signal transmission