750146.fig.002a
(a)
750146.fig.002b
(b)
750146.fig.002c
(c)
750146.fig.002d
(d)
750146.fig.002e
(e)
750146.fig.002f
(f)
750146.fig.002g
(g)
750146.fig.002h
(h)
Figure 2: Sample images downloaded from public domains: (a) aircraft, (b) balloons, (c) Elaine, (d) fruits, (e) house, (f) Lena, (g) stones, and (h) swan. All are gray-scaled and of pixels.