Error concealment based on directional interpolation
IEEE Transactions on Consumer Electronics
H.264 video communication based refined error concealment schemes
IEEE Transactions on Consumer Electronics
Joint source-channel decoding for H.264 coded video stream
IEEE Transactions on Consumer Electronics
Multiframe error concealment for MPEG-coded video delivery over error-prone networks
IEEE Transactions on Image Processing
Concealment of damaged block transform coded images using projections onto convex sets
IEEE Transactions on Image Processing
IEEE Transactions on Circuits and Systems for Video Technology
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Error Concealment methods for Intra frames in H.264 reconstruct the missing macroblock by computing weighted average of the boundary pixels of the neighboring blocks. However, the simple averaging of pixel values leads to blurring and degrades the picture quality severely. To solve this problem, an adaptive interpolation considering directions of neighboring blocks is proposed. Directional interpolation is adaptively chosen by a threshold computed from the distribution of local directions in areas around the lost block. Experiments show improvement of picture quality of about 0.5∼2.0 dB compared to existing methods.