From: JPEG image steganography payload location based on optimal estimation of cover co-frequency sub-image
ci
p(ci)
ci − 1
p(ci| ci − 1)
− 3
1/7
− 2
1
1/8
2
7/8
− 1
1/5
0
3/5
1/10
3
2/5
7/10
3/10
2/9
1/9
2/3