CLASSIFX classifies pixels of x in K=length(s)-1 classes.
x<=s(1), s(k)<x<=s(k+1), k=1,..K-1
USAGE: [z,mk,vk,nk]=classifx(x,s);
s(k) must be between min(x) and max(x) and increasing
mk, vk and nk contains means, variances and numbers of elements in each class.
Author: Ali Mohammad-Djafari
Date: 13/03/2003
Test:
x=.5*shepp(256,256,1,1);s=[.2;.6];[z,mk,vk,nk]=classifx(x,s);
figure(1),imagesc(x);axis('square');
figure(2),imagesc(zk);axis('square');
figure(3),hist(x(:));
figure(4),imagesc(z==1);imagesc(z==2);imagesc(z==3);