LOSSLESS DATA HIDING USING INTEGER WAVELET TRANSFORM AND THRESHOLD EMBEDDING TECHNIQUE (FriPmPO1)

Author(s) : Guorong Xuan (Tongji University, China) Yun Shi (New Jersey Institute of Technology, United States of America) Chengyun Yang (Tongji University, China) Yizhan Zheng (Tongji University, China) Dekun Zou (New Jersey Institute of Technology, United States of America) Peiqi Chai (Tongji University, China)

Abstract : This paper presents a new lossless data hiding method for digital images using integer wavelet transform and threshold embedding technique. Data are embedded into the least significant bit-plane (LSB) of high frequency CDF (2,2) integer wavelet coefficients whose magnitudes are smaller than a certain predefined threshold. Histogram modification is applied as a preprocessing to prevent overflow/underflow. Experimental results show that this scheme outperforms the prior arts in terms of a larger payload (at the same PSNR) or a higher PSNR (at the same payload).

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