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2004

On estimation of secret message length in LSB steganography in spatial domain

9 years 11 months ago
On estimation of secret message length in LSB steganography in spatial domain
In this paper, we present a new method for estimating the secret message length of bit-streams embedded using the Least Significant Bit embedding (LSB) at random pixel positions. We introduce the concept of a weighted stego image and then formulate the problem of determining the unknown message length as a simple optimization problem. The methodology is further refined to obtain more stable and accurate results for a wide spectrum of natural images. One of the advantages of the new method is its modular structure and a clean mathematical derivation that enables elegant estimator accuracy analysis using statistical image models.
Jessica J. Fridrich, Miroslav Goljan
Added 31 Oct 2010
Updated 31 Oct 2010
Type Conference
Year 2004
Where SSWMC
Authors Jessica J. Fridrich, Miroslav Goljan
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