From: Integrating artificial neural network and classical methods for unsupervised classification of optical remote sensing data
Class i1
Classi2
……
Class iN
Min (k = 1)
D i, 1,1
D i,2,1
D i,N,1
D i,1,2
D i,2,2
D i,N,2
.
Max(k = N-1)
D i,1,N-1
D i,2,N-1
D i,N,N-1