A self-cited pixel summation based image encryption algorithm
Ye Guo-Dong1, 2, †, Huang Xiao-Ling1, Zhang Leo Yu3, Wang Zheng-Xia4
       

Correlation test for Lena image. Horizontally: (a) plain image, (b) cipher image; vertically: (c) plain image, (d) cipher image; diagonally: (e) plain image, (f) cipher image.