928161.fig.002a
(a)
928161.fig.002b
(b)
928161.fig.002c
(c)
928161.fig.002d
(d)
Figure 2: (a) An affine transformation version of Figure 1(a). (b) Put the GC of Figure 2(a) on the image. (c) The inside area of Figure 2(a). (d) The outside area of Figure 2(a).