\[G_{u,v} =
\displaystyle{\frac14\alpha(u)\alpha(v)\sum^7_{x=0}\sum^7_{y=0}g_{x,y}\cos\left[\frac{(2x+1)u\pi}{2\times8}\right]\cos\left[\frac{(2y+1)v\pi}{2\times8}\right]}\]
$$
Q=\left[\begin{array}{rrrrrrrr}
16& 11& 10& 16& 24& 40& 51& 61 \\
12& 12& 14& 19& 26& 58& 60& 55 \\
14& 13& 16& 24& 40& 57& 69& 56 \\
14& 17& 22& 29& 51& 87& 80& 62 \\
18& 22& 37& 56& 68& 109& 103& 77 \\
24& 35& 55& 64& 81& 104& 113& 92 \\
49& 64& 78& 87& 103& 121& 120& 101 \\
72& 92& 95& 98& 112& 100& 103& 99\\
\end{array}\right]
$$
$$
B_{j,k} = \Bigl\lfloor \frac{G_{j,k}}{Q_{j,k}}\Bigr\rceil\quad 0\leq j<7, 0\leq k<7
$$