## 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.

### Steps:

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

Source code: MyLinear3

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