Computerized tomography (CT) is a non-invasive imaging technique that allows to examine slices of the human body without damaging it. The human body is X-rayed from several angles, producing a set of X-ray projections, the so-called sinogram. Each sinogram column corresponds to the X-ray projection at one angle. Computerized tomographic reconstruction calculates from this set of 1D sinogram columns a reconstructed 2D image, a slice through the internal structure of the examined body. This is achieved using the standard filtered backprojection (FBP) technique which filters each sinogram column with a ramp filter before the backprojection is performed.
This demo implements the steps described in following diagram:
