As a technology that can prevent the information from being disclosed, the reversible data hiding in encrypted images (RDHEI) acts as an important role in privacy protection and information security. To make use of the image redundancy and further improve the embedding performance, a high-capacity RDHEI method based on bit-plane compression of prediction error is proposed in this paper. Firstly, the whole prediction error is calculated and divided into blocks of the same size. Then, the content owner rearranges the bit-plane of prediction error by block and compresses the bitstream with the joint encoding algorithm to reserve room. Finally, the image is encrypted and the information can be embedded into the reserved room. On the receiver side, the information extraction and the image recovery are performed separably. Experimental results show that the proposed method brings higher embedding capacity than state-of-the-art RDHEI works.
翻译：作为能够防止披露信息的技术,加密图像(RDHEI)中隐藏的可逆数据在保护隐私和信息安全方面起着重要作用。为了利用图像冗余并进一步改进嵌入性能,本文件提出了基于预测错误的比特平板压缩的高能力RDHEI方法。首先,整个预测错误被计算出来,并分成相同大小的区块。然后,内容所有者通过块块将预测错误的比特平板重新排列,并用联合编码算法将比特流压缩到保留室。最后,图像被加密,信息可以嵌入保留室。在接收器方面,信息提取和图像恢复可以相互分离。实验结果表明,拟议方法带来的嵌入能力高于最先进的RDHEI工作能力。
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