Table 4 The coefficients of Fourier series expansion of F ( k ) ( N = 128, θ k =4 k o , k = 0,⋯,44)
From: A novel scheme to design the filter for CT reconstruction using FBP algorithm
a 0 | 0.167768278296600 | ||
a 1 | 0.742071367715883 | b 1 | -0.050516729362635 |
a 2 | -0.007222808863187 | b 2 | -0.257039580419913 |
a 3 | 0.205121481459339 | b 3 | -0.107883292543924 |
a 4 | 0.080764672022586 | b 4 | 0.021273467611896 |
a 5 | -0.013240204304737 | b 5 | -0.106948545272204 |
a 6 | 0.297619345807562 | b 6 | -0.114131247626016 |
a 7 | 0.184808294809679 | b 7 | 0.324654368672888 |
a 8 | -0.198785426563876 | b 8 | 0.153168707602131 |
a 9 | -0.059263999435747 | b 9 | -0.059403297538579 |