Research Article
A Chaotic Cryptosystem for Images Based on Henon and Arnold Cat Map
Table 8
Calculated UACI and NPCR for different combinations of
and
while
in Peppers.
| | ā | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 2 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 3 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 4 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 5 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 6 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 7 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 8 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 9 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 | 10 | UACI | 5.1163 | 2.7810 | 2.0331 | 1.1860 | 1.5810 | 6.1305 | 1.4349 | 3.7728 | 3.3215 | 0.0564 | NPCR | 81.5414 | 44.3218 | 32.4032 | 18.9026 | 25.1965 | 97.7051 | 22.8695 | 60.1284 | 52.9366 | 0.8984 |
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