[Retracted] Signal-to-Noise Ratio Comparison of Several Filters against Phantom Image

Table 1

SNR of the filtered image for the cutoff frequency from 40 to 55.

Cutoff freq.	SNR
40	35.51455
41	35.74032
42	35.95237
43	36.15139
44	36.33805
45	36.51296
46	36.67671
47	36.82986
48	36.97293
49	37.10641
50	37.23078
51	37.34648
52	37.45393
53	37.55354
54	37.64570
55	37.73075