| Image |
|
lena |
baboon |
boat |
couple |
| Horizontal correlation coefficient |
Original image |
0.9991 |
0.7060 |
0.9602 |
0.8284 |
| Encrypted Image |
0.0012 |
−0.0122 |
−0.0032 |
−0.0412 |
|
| Vertical correlation coefficient |
Original image |
0.9977 |
0.8350 |
0.7954 |
0.9124 |
| Encrypted Image |
0.0783 |
−0.0642 |
−0.0149 |
0.0261 |
|
| Diagonal correlation coefficient |
Original image |
0.9972 |
0.6983 |
0.7922 |
0.7493 |
| Encrypted Image |
0.0372 |
−0.0064 |
−0.0016 |
-0.0339 |