Great concern of reversible data hiding in encrypted images (RDHEI) has arisen due to the development of cloud computing and privacy protection. RDHEI is an effective technology that can embed additional data after image encryption, extract additional data error-free and reconstruct original images losslessly. In this paper, a high-capacity and fully reversible RDHEI method is proposed, which is based on pixel prediction and multi-MSB (most significant bit) planes rearrangement. First, the median edge detector (MED) predictor is used to calculate the predicted value. Next, unlike previous methods, in the proposed method, signs of prediction errors (PEs) are represented by one bit plane and absolute values of PEs are represented by other bit planes. Then, we divide bit planes into uniform blocks and non-uniform blocks, and rearrange these blocks. Finally, according to different pixel prediction schemes, different sizes of additional data are embedded adaptively. The experimental results prove that our method has a higher embedding capacity compared with state-of-the-art RDHEI methods.

由于云计算和隐私保护的发展，人们非常关注可逆数据隐藏在加密图像（RDHEI）中。RDHEI是一种有效的技术，可以在图像加密后嵌入其他数据，无错误地提取其他数据，并无损地重建原始图像。本文提出了一种基于像素预测和多MSB（最高有效位）平面重排的高容量，完全可逆的RDHEI方法。首先，使用中值边缘检测器（MED）预测器来计算预测值。接下来，与先前的方法不同，在所提出的方法中，预测误差（PE）的符号由一个位平面表示，并且PE的绝对值由其他位平面表示。然后，我们将位平面分为均匀块和非均匀块，然后重新排列这些块。最后，根据不同的像素预测方案，自适应地嵌入不同大小的附加数据。实验结果证明，与最新的RDHEI方法相比，我们的方法具有更高的嵌入能力。