Table 3 Analysis of variance and chi-square values for encrypted and original image.
From: Adaptive image encryption approach using an enhanced swarm intelligence algorithm
Image name | Variance | Chi-square | ||
|---|---|---|---|---|
Original Image | Encrypted Image | Original Image | Encrypted Image | |
MRI image | 4.8732E + 07 | 1.1431E + 03 | 8.0152E + 06 | 188.0190 |
Ultrasound image | 3.5208E + 05 | 767.2627 | 8.6830E + 04 | 189.2200 |
Diabetic retinopathy image | 1.2995E + 07 | 932.5925 | 2.5709E + 06 | 184.5061 |
Skin image | 8.3892E + 07 | 521.0213 | 2.9649E + 06 | 184.1363 |
