Spatial domain image hiding scheme using pixel-values differencing

Authors:
Chin-Chen Chang;Jun-Chou Chuang;Yu-Chen Hu
Affiliations:
Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan, R.O.C. and Department of Computer Science and Information Engineering, National Chung Cheng Univ ...;Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan, R.O.C.;Department of Computer Science and Information Engineering, Providence University, Taichung, Taiwan, R.O.C.
Venue:
Fundamenta Informaticae
Year:
2005

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Abstract

In this paper, we present a spatial domain Image hiding scheme that embeds secret data in a gray-level image. Our scheme is inspired from Wu and Tsai's scheme that embeds secret bits in the difference values of consecutive pixels. To improve the hiding capacity of their scheme, the overlapping concept is proposed to produce more difference values from the cover image in this paper. Experimental results show that our scheme provides an average hiding capacity gain of 84.16% over Wu and Tsai's scheme while maintaining satisfactory image quality.