Research Article
An Improved Information Hiding Method Based on Sparse Representation
Table 1
PSNR comparison results.
| Cover image | Cover image (pixel) | Database | PSNR (dB) | Literature [26] | The proposed method |
| Lena | 512 × 512 | CASIA | 36.52 | 41.97 | Lena | 512 × 512 | PolyU | 34.26 | 37.62 | Airplane | 512 × 512 | CASIA | 38.5 | 44.90 | Airplane | 512 × 512 | PolyU | 34.42 | 39.42 | Barbara | 512 × 512 | CASIA | 36.12 | 40.50 | Barbara | 512 × 512 | PolyU | 33.05 | 36.05 |
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