Adaptive reversible data hiding scheme based on integer transform

Authors:
Fei Peng;Xiaolong Li;Bin Yang
Affiliations:
Institute of Computer Science and Technology, Peking University, Beijing 100871, China;Institute of Computer Science and Technology, Peking University, Beijing 100871, China;Institute of Computer Science and Technology, Peking University, Beijing 100871, China
Venue:
Signal Processing
Year:
2012

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Abstract

In this paper, we present a new reversible data hiding algorithm based on integer transform and adaptive embedding. According to the image block type determined by the pre-estimated distortion, the parameter in integer transform is adaptively selected in different blocks. This allows embedding more data bits into smooth blocks while avoiding large distortion generated by noisy ones, and thus enables very high capacity with good image quality. For instance, by the proposed method, we can embed as high as 2.17bits per pixel into Lena image with a reasonable PSNR of 20.71dB. Experimental results demonstrate that the proposed method outperforms some state-of-the-art algorithms, especially for high capacity case.