Vector Extrapolation Based Landweber Method for Discrete Ill-Posed Problems

Figure 7

The corresponding restored images by Landweber method ((a) and (d)), the adaptive Landweber method ((b) and (e)), and Algorithm 5 ((c) and (f)) at iteration 35: = 1.7 and = 0.7 for (a), (b), and (c) and for (d), (e), and (f), respectively.

(a)

(b)

(c)

(d)

(e)

(f)