Back Projection Reconstruction

The techniques here are simple examples of back projection reconstruction. The reconstruction is a cumulative response of the individual rays.

The first technique uses binary data, assigning 1 to a ray that intersects the polygon and 0 otherwise.

The second technique assigns to each ray a value that is determined by the number of points along the ray that lie within the polygon.


  1. Select the number of vertices for the polygon to be scanned.
  2. Select the number of scanning angles for the source-detector system.
  3. Within the circle use your mouse to select the location of the polygon vertices.
  4. Refresh the page to run again.

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Source code: MyLinear3

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