Figure 10

Correlation diagrams of DR film: (a,c,e) are the pixel correlation diagrams of the original image in three directions; and (b,d,f) are the pixel correlation diagrams of the encrypted image in three directions.

Correlation diagrams of DR film: (a,c,e) are the pixel correlation diagrams of the original image in three directions; and (b,d,f) are the pixel correlation diagrams of the encrypted image in three directions.