Figure 28
From: A New Robust Watermarking Scheme to Increase Image Security
(a) and (b) Lena and Peppers watermarked images with 256 × 256 watermark image as shown in Figure 11(b), (e) and (f) the counterfeit watermarked image with (a) and (b), respectively. (c) and (d) The Crowd and Baboon watermarked images with 256 × 256 watermark image as shown in Figure 11(d), (g) and (h) the counterfeit watermarked image with (c) and (d), respectively. (i)–(l) the extracted watermark from (e)–(h), respectively. (a)PSNR = 48.27 dB (b)PSNR = 48.47 dB (c)PSNR = 48.66 dB (d)PSNR = 48.26 dB (e) (f) (g) (h) (i)γ = -0.0145 (j)γ = -0.1253 (k)γ = -0.0246 (l)γ = -0.0057