Table 1.

Computation time of the iterative phase correction performed with different spatial resolutions (rows) and iteration schemes (columns) and by solving Eq. [1] only for the background pixels

	π/16 (a)	π/8	π/4	π/2	π
	1 (b)	2	3	4	5
96×96	6.5 days	22 h	3.5 h	55 min	36 min
48×48	11 h	1.6 h	15 min	3.9 min	2.6 min
24×24	1.1 h	9.1 min	1.4 min	23 s	15 s
12×12	10 min	1.4 min	13 s	3.6 s	2.4 s

^(a)initial step size,

^(b)number of iterations