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A reversible data hiding scheme based on histogram shifting using edge direction predictor

In this paper, we propose a novel reversible data hiding scheme based on histogram shifting using edge direction (ED) predictor. The ED predictor utilizes direction of adjusted pixels. Because of reversible character, existing predictor methods don't use all of cases edge direction. However, all of cases edge direction are used in ED predictor. In the proposed scheme, embedding and extraction procedures are classified by odd column and even column to use around adjusted pixels. In our experimental results, the hiding capacity of the proposed scheme is superior to other schemes. The image quality of the proposed scheme is similar or better than other schemes.