Abstract:

Abstract: A novel efficient data-hiding approach is proposed by combining the modification direction modulation and wet paper code. After dividing a secret message into two parts, the first part is carried by the weighted sum of cover data, while the second is embedded by employing wet paper code to select the direction of modification on the cover data and to construct a relation between the cover and the secret data. In this way, a datahider can increase the embedding payload under a distortion restriction or lower the level of distortion caused by data embedding with a given payload. It is shown that performance of the proposed approach is better than that of the exploiting modification direction(EMD) embedding method. It is suitable for cover signals in various formats. 

Key words: information hiding; steganography; modification direction; wet paper code