Definition: <m>sum{}{}{f®}</m>
<m>f®= 1/(1 + S^2*r^2)^2</m>, Cauchy kernel [McCormack and Sherstyuk 1998]
r - distance to a skeleton point

Call: hfConvPoint(x,vect,S,T);

Parameters:

x - point coordinates

vect - array of skeleton points' coordinates

S - array of kernel width control parameters for each point

T - threshold

Test file: convpoint.hf