Computer Vision, Automated Inspection, Radon Transform, Computed Tomography, Fourier Transform.
are interested in the X-ray absorption map, we need to compute the inverse Radon transform. The Inverse Radon Transform We can get an approximation of the inverse Radon transform by making use of the Fourier slice theorem²: For a given θ=θ₀, the 1D Fourier transform of Rf(ρ, θ₀) (integrating over