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Article

High Capacity Reversible Data Hiding Based on the Compression of Pixel Differences

Computer Engineering College, Jimei University, Xiamen 361021, China
Mathematics 2020, 8(9), 1435; https://doi.org/10.3390/math8091435
Received: 31 July 2020 / Revised: 21 August 2020 / Accepted: 24 August 2020 / Published: 26 August 2020
(This article belongs to the Special Issue Computing Methods in Steganography and Multimedia Security)
In this paper, we proposed a novel reversible data hiding method in encrypted image (RDHEI), which is based on the compression of pixel differences. In the proposed method, at the content owner’ side the image is divided into non-overlapping blocks, and a block-level image encryption scheme is used to generate the encrypted image, which partially retains spatial correlation in the blocks. Due to the spatial correlation, in each block the pixels are highly likely to be similar. Therefore, the pixel differences in all blocks are concentrated in a small range and can be compressed. By the compression of pixel differences, the data hider can vacate the room to accommodate secret data in the encrypted image without losing information. At the receiver’s side, the receiver can obtain secret data or retrieve the original image using different keys with no error. The experimental results demonstrate that, compared with existing methods, the proposed method can achieve a higher capacity and visual quality. View Full-Text
Keywords: reversible data hiding; image encryption; compression reversible data hiding; image encryption; compression
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MDPI and ACS Style

Chen, K.-M. High Capacity Reversible Data Hiding Based on the Compression of Pixel Differences. Mathematics 2020, 8, 1435. https://doi.org/10.3390/math8091435

AMA Style

Chen K-M. High Capacity Reversible Data Hiding Based on the Compression of Pixel Differences. Mathematics. 2020; 8(9):1435. https://doi.org/10.3390/math8091435

Chicago/Turabian Style

Chen, Kai-Meng. 2020. "High Capacity Reversible Data Hiding Based on the Compression of Pixel Differences" Mathematics 8, no. 9: 1435. https://doi.org/10.3390/math8091435

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