Table 4 PSNR comparison of the proposed method with the other methods on Lena (512 × 512) image
From: A novel secured Euclidean space points algorithm for blind spatial image watermarking
S. no. | Method | PSNR in dB | PSNR after restoration from tampering in dB |
|---|---|---|---|
1 | Proposed method (Logo1–64 × 64) | [41.251, 63.244]dB | Inf |
2 | Proposed method (Logo1–32 × 32) | [47.105, 69.263]dB | Inf |
3 | Proposed method (Logo2–64 × 64) | [41.219, 63.191]dB | Inf |
4 | Chuan Qin et al., with different tampering rates [3] | [37.91, 51.15] dB | [40.72, 51.14] dB |
5 | R. Sinhal [22] | 49.68 dB | Inf |
6 | Zhang and Wang, [31] | 28.7 dB | Inf |
7 | Zhang et al. [32] | 37.9 dB | [20, 40] dB |