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

Figure 7

Fingerprinted decryption images using different L Codebooks. (a) Fingerprinted Lena image (L=256, PSNR=30.06dB), (b) fingerprinted Lena image (L=512, PSNR=31.23dB), (c) fingerprinted Lena image (L=1024, PSNR=32.17dB), (d) fingerprinted Plane image (L=256, PSNR=29.69dB), (e) fingerprinted Plane image (L=512, PSNR=30.43dB), (f) fingerprinted Plane image (L=1024, PSNR=31.16dB), (g) fingerprinted Baboon image (L=256, PSNR=23.91dB), (h) fingerprinted Baboon image (L=512, PSNR=24.26dB), (i) fingerprinted Baboon image (L=1024, PSNR=24.57dB), (j) fingerprinted Boat image (L=256, PSNR=28.41dB), (k) fingerprinted Boat image (L=512, PSNR=39.13dB), (l) fingerprinted Boat image (L=1024, PSNR=30.05dB), (m) fingerprinted Pepper image (L=256, PSNR=29.63dB), (n) fingerprinted Pepper image (L=512, PSNR=30.24dB), (o) fingerprinted Pepper image (L=1024, PSNR=31.15dB), (p) fingerprinted Barbara image (L=256, PSNR=25.12dB), (q) fingerprinted Barbara image (L=512, PSNR=25.67dB), and (r) fingerprinted Barbara image (L=1024, PSNR=26.21dB).

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