Usage: border in connex out
Description: Let X be the subset of Zn which corresponds to the input image in, and let k be the value of the parameter connex (that is, 4, 8 or 6(3d)). The border B(X) of X is defined by: B(X) = {x in X, (Gamma_k(x) inter Xbar) not empty}
Types supported: byte 2d, byte 3d
Category: