Restoring Poissonian Images by a Combined First-Order and Second-Order Variation Approach

Figure 4

Comparison of a small portion of the restored images and SSIM maps for Example 2.

(a) True

(b) Degraded

(c) Tikhonov

(d) TV

(e) HTV

(f) Hybrid TV

(g) Tikhonov

(h) TV

(i) HTV

(j) Hybrid TV