Adaptive Video Error Concealment Using Reversible Data Hiding

Video transmission in error-prone networks suffers bit errors and packet losses that degrade the decoded video quality. In this paper, a video error concealment scheme based on H.264/AVC is proposed to enhance the error robustness using reversible data hiding. At the encoder, motion vectors of macroblocks belonging to the region of interest (ROI) are embedded into the background region within the same frame. The histogram modification technique based on quantized DCT coefficients of coded macroblocks is used to achieve lossless recovery after data extraction. If a macroblock in the ROI is found missing at the decoder, the embedded motion vector can be extracted from the corresponding host macroblock for the recovery of the missing macroblock. This proposed scheme makes a tradeoff between error concealment performance and compression efficiency. Experimental results show the better reconstructed video quality can be achieved compared with the related error concealment methods.