... deviations of x and y, respectively,σxyis the sample covariance of x and y, and μx and μ y are the sample means of x and y, respectively.Fortwo images I and F, a sliding window technique is utilized to ... Q0proposed by Bovik to measure thesimilarity between two sequences x and y is given byQ0=σxyσxσ y ·2μxμ y μx2+ μ y 2·2σxσ y σx2+ σ y 2, (20)where σx and σ y are the sample standard ... coefficient subband y (n)0 and detail coefficientsubbands y (n)1, y (n)2,andy(n)3oriented horizontally, vertically, and diagonally, respectively, at scale n. The synthesis pro-cedure begins...