516919.fig.003a
(a) LDCT image in Figure 1(b) processed by FOPMD in [9] with , , and and iteration number is 3 
516919.fig.003b
(b) LDCT image in Figure 1(b) processed by FOPMD in [9] with , , and and iteration number is 8
516919.fig.003c
(c) LDCT image in Figure 1(b) processed by FOPMD in [9] with , , and and iteration number is 15
516919.fig.003d
(d) LDCT image in Figure 1(b) processed by EFOGV-PMD with , , and and iteration number is 3
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(e) LDCT image in Figure 1(b) processed by EFOGV-PMD with , , and and iteration number is 8
516919.fig.003f
(f) LDCT image in Figure 1(b) processed by EFOGV-PMD with , , and and iteration number is 15
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(g) LDCT image in Figure 1(d) processed by FOPMD in [9] with , , and and iteration number is 3
516919.fig.003h
(h) LDCT image in Figure 1(d) processed by FOPMD in [9] with , , and and iteration number is 8
516919.fig.003i
(i) LDCT image in Figure 1(d) processed by FOPMD in [9] with , , and and iteration number is 15
516919.fig.003j
(j) LDCT image in Figure 1(d) processed by EFOGV-PMD with , , and and iteration number is 3
516919.fig.003k
(k) LDCT image in Figure 1(d) processed by EFOGV-PMD with , , and and iteration number is 8
516919.fig.003l
(l) LDCT image in Figure 1(d) processed by EFOGV-PMD with , , and and iteration number is 15
Figure 3: LDCT images in Figures 1(b) and 1(d) processed by FOPMD and EFOGV-PMD with different iteration numbers and the fractional-order . The first column: iteration number is 3; the second column: iteration number is 8 and the third column: iteration number is 15. The first row: Figure 1(b) processed by FOPMD; the second row: Figure 1(b) processed by EFOGV-PMD; the third row: Figure 1(d) processed by FOPMD and the fourth row: Figure 1(d) processed by EFOGV-PMD.