Full Name: Johann Radon

Lived Between: 1887-1956

Nationality: Austrian

Primary Occupation:

Claim to Fame: Johann Radon applied the calculus of variations to differential geometry, leading to applications in number theory.  Mathematically, a projection can be described by the Radon transform, which is to transform two-dimensional images with lines into a domain of possible line parameters, where each line in the image will give a peak positioned at the corresponding line parameters.

Recommended Book: Johann Radon: Collected Works -- Peter M. Gruber, Johann Radon; Hardcover

Recommended Link: http://marr.bsee.swin.edu.au/~dtl/het408/backproj/node2.html