Description

Reversible data hiding, which can restore the original image from the marked image after extraction of hidden message, has drawn more attention recently. This paper proposed a reversible data hiding algorithm based on histogram shifting using difference integer wavelet coefficients. In the proposed algorithm, each difference integer wavelet coefficient is generated between two adjacent integer wavelet coefficients in each sub-band. We use the peak point in the histogram of difference integer wavelet coefficients in each sub-band to hide data in the integer wavelet coefficients. Experimental results demonstrate that the proposed algorithm has high embedding capacity with low distortion.In this paper, we transfer the difference idea described in from spatial domain to integer wavelet domain and proposed a reversible data hiding algorithm based on histogram shifting using differences of integer wavelet coefficients.We exploit the statistical property of histogram of difference integer wavelet coefficients to embed confidential information into the integer wavelet coefficients.we extract message and bookkeeping data and use it to recover the original image from the marked image.