A VQ-Based Joint Fingerprinting and Decryption Scheme for Secure and Efficient Image Distribution

Figure 5

Six -pixel standard gray-scale VQ images using L Codebooks. (a) Original Lena image (L=256, PSNR=31.36dB), (b) original Lena image (L=512, PSNR=32.24dB), (c) original Lena image (L=1024, PSNR=33.20dB), (d) original Plane image (L=256, PSNR=30.57dB), (e)original Plane image (L=512, PSNR=31.57dB), (f) original Plane image (L=1024, PSNR=32.23dB), (g) Original Baboon image (L=256, PSNR=24.37dB), (h) original Baboon image (L=512, PSNR=24.70dB), (i) original Baboon image (L=1024, PSNR=25.03dB), (j) Original Boat image (L=256, PSNR=29.38dB), (k) original Boat image (L=512, PSNR=30.15dB), (l) original Boat image (L=1024, PSNR=30.88dB), (m) original Pepper image (L=256, PSNR=30.72dB), (n) original Pepper image (L=512, PSNR=31.40dB), (o) original Pepper image (L=1024, PSNR=32.13dB), (p) original Barbara image (L=256, PSNR=25.80dB), (q) original Barbara image (L=512, PSNR=26.38dB), and (r) original Barbara image (L=1024, PSNR=27.05dB).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)

(m)

(n)

(o)

(p)

(q)

(r)