A novel error concealment scheme for intra frames of H.264 video

Several methods had been proposed for error concealment of H.264 video either in spatial domain or temporal domain. For H.264 video the macroblock is the more basically block unit and it tends to be lost in whole in an error prone channel. Single concealment approach can not achieve acceptable performance for a block of size 16/spl times/16. The scheme proposed is a combination of spatial concealment and temporal concealment and it has been demonstrated that it can significantly improve the quality of the video. Fast-DCT based spatial domain interpolation approach (Z. Alkachouh and M.G. Bellanger, 2000] and mean interpolation method are employed here for spatial domain concealment. For temporal domain direct copy is used after a determination operation.