Abstract:

Due to the characteristics of high quality, high capacity, authentication, frequent insertions and reversibility of the medical images reversible data hiding, a reversible data hiding scheme for medical images based on prediction error modification is proposed. The proposed method uses a nonblockbased approach and obtains the prediction images by using a weighted linear predictor. In the prediction error histogram, it uses four peak points to embed the private data, and the method solves the overflow problem well, which appears in medical images. It increases the embedding capacity while keeping the distortion. The theoretical analysis and the experimental results demonstrate the superior performance of the proposed method.

Key words: reversible data hiding;prediction error;medical image