371868.fig.003a
(a) LDCT image (Figure 1(b)) processed by FOPMD in [8] with , , and and iteration number is 20  
371868.fig.003b
(b) LDCT image (Figure 1(b)) processed by FOPMD in [8] with , , and and iteration number is 50
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(c) LDCT image (Figure 1(b)) processed by FOPMD in [8] with , , and and iteration number is 100
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(d) LDCT image (Figure 1(b)) processed by RFS-FOPMD with , , , and and iteration number is 20
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(e) LDCT image (Figure 1(b)) processed by RFS-FOPMD with , , , and and iteration number is 50
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(f) LDCT image (Figure 1(b)) processed by RFS-FOPMD with , , , and and iteration number is 100
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(g) LDCT image (Figure 1(d)) processed by FOPMD in [8] with , , and and iteration number is 20
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(h) LDCT image (Figure 1(d)) processed by FOPMD in [8] with , , and and iteration number is 50
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(i) LDCT image (Figure 1(d)) processed by FOPMD in [8] with , , and and iteration number is 100
371868.fig.003j
(j) LDCT image (Figure 1(d)) processed by RFS-FOPMD with , , , and and iteration number is 20
371868.fig.003k
(k) LDCT image (Figure 1(d)) processed by RFS-FOPMD with , , , and and iteration number is 50
371868.fig.003l
(l) LDCT image (Figure 1(d)) processed by RFS-FOPMD with , , , and and iteration number is 100
Figure 3: LDCT images (Figures 1(b) and 1(d)) processed by FOPMD and RFS-FOPMD with different iteration numbers and the fractional-order . The first column: iteration number is 20; the second column: iteration number is 50 and the third column: iteration number is 100. The first row: Figure 1(b) processed by FOPMD; the second row: Figure 1(b) processed by RFS-FOPMD; the third row: Figure 1(d) processed by FOPMD and the fourth row: Figure 1(d) processed by RFS-FOPMD.