randomsubimages.m

It is for Face Recognition

%function [nonface]=randomSubImages(jpg, n, w, h)
function [nonface]=randomSubImages(jpg, n, w, h)  

  % const   
  jpgPath = 'd:/data/Feret/jpeg/nonface/';
  % var
  fname = sprintf('%s%s', jpgPath, jpg);
  img = imread(fname, 'jpg');

  [fh fw]=size(img);
  xpos = fix(1+rand(n, 1)*(fw-w));
  ypos = fix(1+rand(n, 1)*(fh-h));
  m=1;
  for j=1:n
    for k=1:n
      [icon, vec]=getSubImage(img, xpos(k), ypos(j), w, h);
      %subplot(n, n, m); imshow(icon);
      nonface(1:w*h,m)=vec;
      m=m+1;
      %fprintf('>');
    end
    fprintf('>');
  end