Research Article

Reversible Data Hiding with Pixel Prediction and Additive Homomorphism for Encrypted Image

Table 2

Results of entropy and correlation coefficient.

ImageEntropyCorrelation coefficient

Lena7.9992−0.0003
Airplane7.99930.0022
Barbara7.99940.0005
Baboon7.9993−0.0026
Peppers7.99930.0007
Boats7.9994−0.0002
Man7.99930.0002
Tiffany7.99930.0009