Research Article
Reversible Data Hiding with Pixel Prediction and Additive Homomorphism for Encrypted Image
Table 5
Embedding rates and PSNR of the directly decrypted images with r=3.
| Image | | Lena | Airplane | Barbara | Baboon | Peppers | Boats | Man | Tiffany |
| tau | | 105911 | 115441 | 151522 | 246246 | 145015 | 119466 | 133242 | 129437 | t1 | | 35304 | 38480 | 50507 | 82082 | 48338 | 39822 | 44414 | 43146 | t2 | | 24 | 432 | 181 | 350 | 302 | 114 | 130 | 374 | t3 | | 2347 | 2329 | 2257 | 2074 | 2272 | 2320 | 2293 | 2302 | t4 | | 19058 | 21356 | 41230 | 87028 | 29270 | 21717 | 26726 | 24569 | EC | bit | 510394 | 483200 | 352385 | 25584 | 400871 | 475047 | 432504 | 445822 | bpp | 1.947 | 1.8433 | 1.3442 | 0.0975 | 1.5292 | 1.8122 | 1.6499 | 1.7007 | PSNR(dB) | | 18.1015 | 18.5971 | 17.0775 | 14.771 | 17.3412 | 18.2071 | 17.295 | 16.6696 |
|
|