Parametric representation of digital shapes by Gaussian functions (Q1208635)

The author uses scale-space filtering as defined by \textit{A. P. Witkin} [Scale-space filtering: a new approach to multi-scale description, Proc. Image Understanding 79-95 (1984)] and representation of functions by sums of exponentials \(\Sigma A_ i\exp(-(t_ k-t_ i)^ 2/\sigma_ i)\) using a least squares algorithm to obtain the coefficients. Their experiments show that their method achieves a higher rate of data compression in the representation of curves but at a heavy cost in computer time.