Covariance analysis of motion-compensated frame differences
W. Niehsen, Michael Brünig · IEEE Transactions on Circuits and Systems for Video Technology · 1999
The second-order statistics of motion-compensated frame differences in a low-bit-rate hybrid video coding scheme with overlapped block motion compensation are investigated. Based on the empirical covariance sequence, an adequate compound covariance model is developed. The prediction gain for motion-compensated frame differences is evaluated, and the performance of the discrete cosine transform for interframe transform coding is discussed.