This paper presents a reversible data hiding in encrypted image that employs based notions of the RDH in plain-image schemes including histogram modification and prediction-error computation. In the proposed method, original image may be encrypted by desire encryption algorithm. Most significant bit (MSB) of encrypted pixels are integrated to vacate room for embedding data bits. Integrated ones will be more resistant against failure of reconstruction if they are modified for embedding data bits. At the recipient, we employ chess-board predictor for lossless reconstruction of the original image by the aim of prediction-error analysis. Comparing to existent RDHEI algorithms, not only we propose a separable method to extract data bits, but also content-owner may attain a perfect reconstruction of the original image without having data hider key. Experimental results confirm that the proposed algorithm outperforms state of the art ones.

中文翻译：

---

使用 MSB 积分和直方图修改隐藏在加密图像中的可逆数据

本文提出了一种隐藏在加密图像中的可逆数据，它在普通图像方案中采用了基于 RDH 的概念，包括直方图修改和预测误差计算。在所提出的方法中，原始图像可以通过期望的加密算法进行加密。集成加密像素的最高有效位 (MSB) 以腾出空间来嵌入数据位。如果为嵌入数据位进行修改，集成的将更能抵抗重建失败。在接收方，我们采用棋盘预测器通过预测误差分析的目的对原始图像进行无损重建。与现有的 RDHEI 算法相比，我们不仅提出了一种可分离的方法来提取数据位，而且内容所有者可以在没有数据隐藏密钥的情况下实现原始图像的完美重建。