Research Article
Dynamical Analysis of a Quadratic Megastable Chaotic Oscillator and Its Application in Biometric Fingerprint Image Encryption
Table 5
The comparison of the proposed encryption design with similar research.
| | Encryption designs | NPCR | UACI | Correlation coefficients | Entropy |
| | Yoosefian Dezfuli Nezhad et al. [30] | 99.60% | 33.46% | Horizontal: — | 7.9882 | | Vertical: — | | Diagonal: — |
| | Su et al. [45] | — | — | 0.0019 (average) | — |
| | Li [46] | 99.61% (average) | 33.44% (average) | Horizontal: −0.0023 | 7.5310 (average) | | Vertical: −0.0044 | | Diagonal: −0.0007 |
| | Su et al. [47] | — | — | Horizontal: 0.0020 | — | | Vertical: 0.0091 | | Diagonal: 0.0038 |
| | Umoh and Iloanusi [48] | 99.59% (average) | 99.41% (average) | Horizontal: — | 7.5945 (average) | | Vertical: — | | Diagonal: — |
| | Proposed encryption design | 99.609% | 33.464% | Horizontal: −0.0025 | 7.9987 | | Vertical: −0.0032 | | Diagonal: −0.0025 |
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