1 August 2001 Techniques for data embedding in image using wavelet extrema
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In this work, we propose new multiresolution techniques for data embedding in imagery. The wavelet extrema of the image are exploited to embed data. We use the wavelet extrema of the dyadic non-orthogonal wavelet transform. These extrema represent high frequency points in the image, hence modifications in their neighborhoods have minor visual distortion.
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Mohamed F. Mansour, Ahmed H. Tewfik, "Techniques for data embedding in image using wavelet extrema", Proc. SPIE 4314, Security and Watermarking of Multimedia Contents III, (1 August 2001); doi: 10.1117/12.435414; https://doi.org/10.1117/12.435414

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