... timing) In this paper, we present a novel online signature verification system based on the Fast Fourier Transform Our work differs from previous work using Fourier analysis [23–25] in preprocessing ... illustration, using only the y-profile From left to right: (a) Genuine signature, its y-profile and its Fourier Descriptors (b) Forgery signature, its y-profile and its Fourier Descriptors The Fourier ... authentication using improved online signature verification method,” Pattern Recognition Letters, vol 26, no 15, pp 2400–2408, 2005 [14] J J van Oosterhout, H Dolfing, and E Aarts, “On-line signature verification...