“…Data hiding methods can also be divided into two kinds: reversible and irreversible, depending on the receiver’s ability to recover the cover digital image. Reversible data hiding (RDH) [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ] can recover the primary digital image after reading the embedded secret messages. While irreversible data hiding (IRDH) [ 14 , 15 ] cannot recover the primary digital image from the message-embedded confidential image completely without loss.…”