A novel robust data hiding scheme for image authentication

Recently, non-distorted data hiding technologies have attracted increasing interest for some sensitive images such as medical and military images. Among these technologies, histogram shift methods have the most outstanding performance in resisting image processing distortions. Such methods have highnovel robust data hiding scheme hiding capacity in non-distorted hidden information and resistance towards image processing distortions. However, the existing histogram shift methods have limitation in overflow problem. We therefore propose adaptive shrinking and two-level histogram shift to overcome this issue. Extensive experimental results revealed that our proposed method outperforms state-ofthe- art methods in terms of marked image quality, larger data hiding capacity, and robustness.