1. A method for identifying coins, the method comprising: obtaining a first image of a coin; generating a second image from the first image; transforming the second image to a 2D third image using a 2D Fourier transform; identifying at least one of a location and an intensity of a spectral peak in the 2D third image; and comparing at least one of the location and the intensity of the spectral peak in the 2D third image to at least one known coin property.