An Image Filter Based on Shearlet Transformation and Particle Swarm Optimization Algorithm

Figure 3

Comparison chart of two algorithms on some images.

(a) Head MRI

(b) Baboon

(c) Barbara

(d) Brain MRI

(e) Comparison chart of two algorithms on (a)

(f) Improved PSNR of (e)

(g) Comparison chart of two algorithms on (b)

(h) Improved PSNR of (g)

(i) Comparison chart of two algorithms on (c)

(j) Improved PSNR of (i)

(k) Comparison chart of two algorithms on (d)

(l) Improved PSNR of (k)