Reversible Data Hiding for JPEG Based on EMD

To save communication bandwidth, data compression method usually is used when the stego-image transmits. To defend data security, the data hiding technology is used in the data communication. However, it seems that there is no relationship between data compression and data hiding. Actually, they are closely related. Until now, many data hiding schemes had been proposed in literatures. Unfortunately, the stego-image size will be increased after the secret data is hidden. In order to overcome this disadvantage, a reversible data hiding for JEPG based on EMD will be proposed in this paper. According to the experimental results, we can prove that our proposed scheme still keeps high embedding capacity, security and good compression ratio.