Stochastic approach to secret message length estimation in ±k embedding steganography

  title={Stochastic approach to secret message length estimation in ±k embedding steganography},
  author={Taras Holotyak and Jessica J. Fridrich and David Soukal},
  booktitle={Security, Steganography, and Watermarking of Multimedia Contents},
In this paper, we propose a new method for estimation of the number of embedding changes for non-adaptive ±k embedding in images. By modeling the cover image and the stego noise as additive mixture of random processes, the stego message is estimated from the stego image using a denoising filter in the wavelet domain. The stego message estimate is further analyzed using ML/MAP estimators to identify the pixels that were modified during embedding. For non-adaptive ±k embedding, the density of… CONTINUE READING
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