Table 5 NPCR and UACI p values
From: Periodic characteristics of the Josephus ring and its application in image scrambling
Item | NPCR(%) | UACI (%) | p-value | Size |
|---|---|---|---|---|
Test image | ||||
Cameraman | 99.5620 | 31.1169 | 0.0261 | 256 × 256 × 1 |
Scrambled cameraman | 99.6185 | 31.1317 | 0.0127 | 256 × 256 × 1 |
Lena | 99.5788 | 33.8519 | 0.0452 | 256 × 256 × 1 |
Scrambled Lena | 99.6093 | 34.0460 | 0.0440 | 256 × 256 × 1 |
Couple | 99.6078 | 32.8495 | 0.0750 | 256 × 256 × 1 |
Scrambled couple | 99.6643 | 33.0188 | 0.0279 | 256 × 256 × 1 |
Boat | 99.5937 | 29.3294 | 0.0466 | 512 × 512 × 1 |
Scrambled boat | 99.6154 | 29.3675 | 0.0218 | 512 × 512 × 1 |
Baboon | 99.6063 | 27.7792 | 0.1011 | 512 × 512 × 1 |
Scrambled baboon | 99.6234 | 27.8718 | 0.0366 | 512 × 512 × 1 |
Town | 99.6055 | 29.1728 | 0.0770 | 512 × 512 × 1 |
Scrambled town | 99.6174 | 29.2275 | 0.0478 | 512 × 512 × 1 |
Barbara | 99.6189 | 28.8729 | 0.0832 | 512 × 512 × 1 |
Scrambled barbara | 99.6310 | 28.8842 | 0.0470 | 512 × 512 × 1 |
Peppers | 99.6143 | 30.9129 | 0.0658 | 512 × 512 × 1 |
Scrambled peppers | 99.6325 | 30.9247 | 0.0412 | 512 × 512 × 1 |