Reversible Data Hiding based on Radon and Integer Lifting wavelet Transform

AMSAVENI A, Vanathi P T

Abstract


This paper presents a reversible data hiding technique based on radon and integer lifting wavelet transform to secure the data transmitted over communication network. The technique focuses on three optimality criteria, namely imperceptibility, robustness and reversibility. The frequency domain strategy is applied due to its superior performance over the spatial domain techniques in certain important aspects like robustness and reversibility towards signal processing and image processing operations. The cover image is first transformed from spatial domain to radon domain and then this radon image is applied with integer lifting wavelet transform. As the Radon transform performs rotation, scaling and translation operations on the cover image, it changes the locations of the secret bits. Hence, it is very difficult to detect the embedded data without taking the inverse Radon transform and subsequently it increases the security of the embedded payload. The integer lifting wavelet transform guarantees complete reversibility as they produce integer wavelet coefficients.  Then the middle bit planes of high frequency lifting coefficients are compressed using arithmetic coding to provide space for embedding secret payload. As the proposed framework embeds data in red, green and blue channels, it can work well for a variety of images with different distribution of colors.

Keywords


reversible data hiding; radon transform; integer lifting transform;bit plane coding;arithmetic coding

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References


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