ramp filter
IMAGE, RADON, AND FOURIER SPACE. FILTERED BACK-PROJECTION FOR PLANAR PARALLEL PROJECTIONS. convolution. ramp filter. back-projection. FILTERED BACK-PROJECTION FOR FAN BEAM PLANAR DETECTOR CASE. y. a. P(x,y). P’. . x. . R. S. U. Fan beam projection on linear detector: p F (,a).
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