High Payload Data Embedding with Hybrid Strategy

Data embedding is a technique for delivering secret data over Internet. Digital images are widely used cover media for carrying secret data. This is because the distortion of images is hard to distinguish by human eyes. Because of the image property, data embedding method embeds as many secret data as possible. This paper presents a high payload data embedding technique by employing the concepts of irreversible data embedding and reversible data embedding. Chang et al.´s embedding method and Tian´s embedding method are two key embedding operations used in the proposed method. The proposed method embeds secret data twice. First, secret data is embedded by using Chang et al.´s method. Then, Tian´s method is applied to embed the secret data. The experimental results show that the proposed method embeds 2.49 secret bits into one pixel with higher than 39 dB visual quality of stego image.