High capacity image steganography using wavelet-based fusion

Authors:
M. F. Tolba;M. A. -S. Ghonemy;I. A. -H. Taha;A. S. Khalifa
Affiliations:
Fac. of Comput. & Inf. Sci., Ain Shams Univ., Cairo, Egypt;Fac. of Comput. & Inf. Sci., Ain Shams Univ., Cairo, Egypt;Fac. of Comput. & Inf. Sci., Ain Shams Univ., Cairo, Egypt;Fac. of Comput. & Inf. Sci., Ain Shams Univ., Cairo, Egypt
Venue:
ISCC '04 Proceedings of the Ninth International Symposium on Computers and Communications 2004 Volume 2 (ISCC"04) - Volume 02
Year:
2004

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Abstract

Digital steganography exploits the use of a host data to hide a piece of information in such a way that it is imperceptible to a human observer. This work presents a cover-screw algorithm based on what is called the wavelet based fusion. In this method the wavelet decomposition of both the cover image and the secret message are merged into a single fused result using an embedding strength factor ( ). The algorithm also applies a preprocessing step on the cover image to shrink the range of the pixels components in order to guarantee that the embedded message will be recovered with acceptable accuracy. Experimental results showed the high invisibility of the proposed model as well as the large hiding capacity it provides.