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Effective reversible data hiding in encrypted image with privacy protection for image content

机译:有效的可逆数据隐藏在加密图像中,并具有图像内容的隐私保护

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摘要

In this paper, we propose a novel reversible data hiding scheme in encrypted image. The content owner encrypts the original image with the encryption key to achieve privacy protection for image content, and then, each block of the encrypted image is embedded with one secret bit by the data hider using the data-hiding key. Through the elaborate selection for partial pixels to be flipped, data hiding process only conducts slighter modifications to each block, which leads to significant improvement of visual quality for the decrypted image. The receiver can easily decrypt the marked, encrypted image using the encryption key, and then, through the data-hiding key and an adaptive evaluation function of smoothness characteristic along the isophote direction, secret data can be extracted from the decrypted image, and the original image can further be recovered successfully. Experimental results demonstrate the effectiveness of the proposed scheme. (C) 2015 Elsevier Inc. All rights reserved.
机译:在本文中,我们提出了一种新颖的可加密图像隐藏数据隐藏方案。内容所有者使用加密密钥对原始图像进行加密,以实现图像内容的隐私保护,然后,数据隐藏器使用数据隐藏密钥将加密图像的每个块嵌入一个秘密位。通过精心选择要翻转的部分像素,数据隐藏过程仅对每个块进行了较小的修改,从而极大地提高了解密图像的视觉质量。接收者可以使用加密密钥轻松地对标记的加密图像进行解密,然后,通过数据隐藏密钥和沿等视线方向的平滑度特性自适应评估功能,可以从解密后的图像中提取秘密数据,并获得原始数据。图像可以进一步成功恢复。实验结果证明了该方案的有效性。 (C)2015 Elsevier Inc.保留所有权利。

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