ejercicio 14

 v = imread('WindTunnel.jpg');
 image(v)
 figure
 row = 2;
 red = v(row, :, 1);
 gr  = v(row, :, 2);
 bl  = v(row, :, 3);
 plot(red, 'r');
 hold on
 plot(gr, 'g');
 plot(bl, 'b');