A novel new idea of data hiding using GEMD technique

Data hiding is a technique about embedding secret message into multimedia, and transports information without causing any distrustful situation. In 2013, Kuo and Wang proposed GEMD (General Exploiting Modification direction). It can effectively achieve the balance of payload and image quality. However, the study of transmission security is slightly inadequate. In order to improve this shortcoming, we will propose a modified method which is used 1bit of pixel group to keep the channel safely or not in this paper. In other words, if it is an unsafe channel, the sender uses the encrypted key to encrypt secret message, in order to avoid other stealing or tampering message. The simulation results are effective about transmission security, moreover, payload and PSNR are 1 bpp and 50 dB, respectively.