Error concealment of lost motion vectors with overlapped motion compensation

Authors:
Mei-Juan Chen;Liang-Gee Chen;Ro-Min Weng
Affiliations:
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei;-;-
Venue:
IEEE Transactions on Circuits and Systems for Video Technology
Year:
1997

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Abstract

Most video sequence coding systems use block motion compensation to remove temporal redundancy for video compression due to the regularity and simplicity. A new error concealment algorithm for recovering the lost or erroneously received motion vectors is presented. It combines the overlapped motion compensation and the side match criterion to make the effect of lost motion vectors subjectively imperceptible. The side match criterion takes advantage of the spatial contiguity and interpixel correlation of image to select the best-fit replacement among the motion vectors of spatially contiguous candidate blocks. Particularly, to mask the blocking artifacts, we incorporate an overlapping technique to create a subjectively closer approximation to the true error-free image