Fig. 15 | Scientific Reports

Fig. 15

From: Color image encryption based on finger vein key and off-axis digital holography with phase-modulated reference light

Fig. 15

Correlation distributions of (a1)–(a3) in the horizontal direction, diagonal direction, and horizontal direction, respectively, in the “red” channel of the color plaintext (“Peppers”) shown in Fig. 5(b1); (b1)–(b3) in the horizontal direction, diagonal direction, and horizontal direction, respectively, in the “green” channel of the color plaintext (“Peppers”) shown in Fig. 5(b2); (c1)–(c3) in the horizontal direction, diagonal direction, and horizontal direction, respectively, in the “blue” channel of the color plaintext (“Peppers”) shown in Fig. 5(b3); (d1)–(d3) in the horizontal direction, diagonal direction, and horizontal direction, respectively, in the ciphertext shown in Fig. 5j.

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