Figure 7

Histograms: (a,c,e,g,i) are the histograms of the plaintext images; and (b,d,h,f,j) are the histograms of the encrypted images.

Histograms: (a,c,e,g,i) are the histograms of the plaintext images; and (b,d,h,f,j) are the histograms of the encrypted images.