Image Encryption Performance Evaluation Based on Poker Test

Figure 4

Evaluation result value curve with different neighborhood selection.

(a) 2 × 3 and 3 × 2

(b) 2 × 2

(c) 1 × 3 and 3 × 1

(d) 3 × 3

(e) 3 × 4 and 4 × 3

(f) 4 × 4

(g) 4 × 5 and 5 × 4