A High Capacity Reversible Data Hiding Scheme Based on Multi-Level Integer DWT and Histogram Modification
Tie-gang Gao and
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Shun Zhang: College of Software, Nankai University, Nankai, Tianjin, China
Tie-gang Gao: College of Software, Nankai University, Nankai, Tianjin, China
Fu-sheng Yang: College of Software, Nankai University, Nankai, Tianjin, China
International Journal of Digital Crime and Forensics (IJDCF), 2014, vol. 6, issue 1, 51-64
A reversible data hiding scheme based on integer DWT and histogram modification is proposed. In the scheme, the cover media is firstly transformed by Integer DWT (Discrete Wavelet Transformation); then information is embedded through the modification of histograms of the middle and high frequency sub-bands of the DWT coefficients. In order to increase the embedding capacity, a multi-level scheme is proposed, which achieved both high embedding capacity and reversibility. Extensive experimental results have shown that the proposed scheme achieves both higher embedding capacity and lower distortion than spatial domain histogram modification based schemes; and it achieved better performance than integer DCT (Discrete Cosine Transformation) based histogram modification scheme.
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