Advances, Systems and Applications
Table 8 PSNR, NC and BER(%) values after JPEG compression with different CR on Lena image for the Proposed approach and other state-of-art methods
From: Digital image watermarking using discrete cosine transformation based linear modulation
CR | Proposed approach | [17] | [20] | ||||||
|---|---|---|---|---|---|---|---|---|---|
Compressed image | Extracted stego-text | BER(%) | Compressed image | Extracted watermark | BER(%) | Compressed image | Extracted watermark | BER(%) | |
PSNR | NC | BER(%) | PSNR | NC | BER(%) | PSNR | NC | BER(%) | |
7.92 | 39.67Â dB | 1 | 0% | 38.41Â dB | 1 | 0% | 34.83Â dB | 1 | 0% |
12.26 | 38.58Â dB | 1 | 1.02% | 37.26Â dB | 0.9810 | 1.83% | 32.9Â dB | 1 | 1.15% |
15.54 | 37.66Â dB | 0.9987 | 3.62% | 36.53Â dB | 0.9280 | 8.99% | 32.3Â dB | 0.9974 | 5.88% |
18.67 | 36.73Â dB | 0.9385 | 6.14% | 35.98Â dB | 0.8847 | 17.21% | 31.87Â dB | 0.9966 | 8.67% |