Data-Hiding Scheme Using Multidirectional Pixel-Value Differencing on Colour Images

Figure 6

Cover images. (a) Lena. (b) Tiffany. (c) Macaw. (d) Beach. (e) Pens. (f) Girl. (g) Cat. (h) Flower.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)