Research Article
A Simple Image Encryption Based on Binary Image Affine Transformation and Zigzag Process
Table 3
Correlation coefficients and entropy information of some medical images.
| | Image name | Size | Correlation coefficients between plain and cipher images | Entropy value of plain image | Entropy value of cipher image | Correlation coefficients between plain and decrypted images |
| | ANTAMOEBACOLI | 398 × 407 | −1.27e−03 | 6.9714 | 7.9993 | 1 | | article_oeuf_taeniaC2 | 200 × 200 | 3.23 e−03 | 7.2348 | 7.9993 | 1 | | Balantidium coli cyst | 200 × 200 | −2.54e−03 | 7.0118 | 7.9993 | 1 | | Balantidium coli_trophozoite | 200 × 200 | −1.76e−03 | 5.6742 | 7.9992 | 1 | | DICROCOELIUM | 400 × 341 | 1.66e−03 | 6.6175 | 7.9994 | 1 | | Entamoeba coli trophozoite | 200 × 200 | −9.34e−04 | 7.1234 | 7.9992 | 1 | | Entamoeba histolytica cyst | 200 × 200 | −1.08e−03 | 5.8102 | 7.9994 | 1 | | Entamoeba histolytica-cyst-Gini | 130 × 130 | 1.58e−03 | 6.5016 | 7.9993 | 1 | | Entamoeba histolytica trophozoite | 200 × 200 | 8.49e−04 | 7.6217 | 7.9994 | 1 | | Entamoeba histolytica trophozoite_redim | 120 × 120 | −3.26e−03 | 7.8522 | 7.9992 | 1 | | Entamoeba histolytica trophozoite_redim2 | 172 × 160 | 7.73e−05 | 7.7367 | 7.9993 | 1 | | oeuf_ascarisc | 266 × 200 | −1.48e−04 | 6.9107 | 7.9993 | 1 | | S- Hematobium egg | 400 × 300 | −1.03e−03 | 7.1983 | 7.9992 | 1 | | S- Mansoni egg | 400 × 300 | 9.58e−04 | 6.4561 | 7.9993 | 1 | | tropho_entamoeba_histolytica2 | 332 × 213 | −1.99e−03 | 3.8234 | 7.9993 | 1 | | tropho_iodamoeba_butschlii | 200 × 200 | 7.70e−04 | 6.3247 | 7.9993 | 1 | | Angio | 64 × 64 | −3.21e−03 | 7.2769 | 7.9992 | 1 | | DisLocElbow | 64 × 64 | 9.58e−04 | 5.5326 | 7.9993 | 1 | | echo1 | 64 × 64 | 1.61e−03 | 6.3281 | 7.9993 | 1 | | I1_200 | 64 × 64 | −7.02e−04 | 6.4746 | 7.9993 | 1 | | Node2 | 64 × 64 | −8.81e−04 | 6.8732 | 7.9994 | 1 | | Ossify | 64 × 64 | 3.48e−03 | 6.9989 | 7.9993 | 1 | | Pelvis | 64 × 64 | 1.29e−03 | 6.4653 | 7.9993 | 1 | | Ribs | 64 × 64 | 1.12e−03 | 6.2298 | 7.9991 | 1 | | Dirofilaria | 241 × 500 | −2.59e−03 | 6.7666 | 7.9993 | 1 | | Headirm | 256 × 256 | 1.38e−03 | 5.0299 | 7.9993 | 1 | | Abdomenirm | 256 × 256 | −6.18e−04 | 6.9551 | 7.9993 | 1 | | Pelvisirm | 256 × 256 | 1.08e−03 | 6.7379 | 7.9993 | 1 | | Gastrointestinal_parasites | 512 × 392 | 5.58e−07 | 7.6634 | 7.9994 | 1 | | Echo fetus at 12 weeks | 300 × 210 | 3.41e−04 | 6.4062 | 7.9993 | 1 | | Ultrasound of fetus of 3months | 512 × 396 | 1.90e−03 | 7.2999 | 7.9994 | 1 | | Echopelv | 601 × 711 | −6.74e−04 | 6.5896 | 7.9998 | 1 | | CT-MONO2-8-abdo | 128 × 128 | −4.3347e−04 | 5.8925 | 7.9992 | 1 | | OT-MONO2-8-colon | 128 × 128 | −2.7e−03 | 6.7468 | 7.9993 | 1 |
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