An optimal data hiding scheme with tree-based parity check.

Hou, Chung-Li; Lu, ChangChun; Tsai, Shi-Chun; Tzeng, Wen-Guey · IEEE Trans Image Process · 2011

basic_science · Level V

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Abstract

Reducing distortion between the cover object and the stego object is an important issue for steganography. The tree-based parity check method is very efficient for hiding a message on image data due to its simplicity. Based on this approach, we propose a majority vote strategy that results in least distortion for finding a stego object. The lower embedding efficiency of our method is better than that of previous works when the hidden message length is relatively large.