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A new reversible data hiding algorithm with better performance of robustness is proposed in this letter. In the scheme, the original image is firstly divided into some no over-lapping sub-blocks, then Inter Waver Transform (IWT) is applied to every image sub-block, the resulting low-frequency approximate sub-band is used to hide data based on the statistical features of image, two threshold parameters...
In this paper, a novel blind watermarking scheme for still image based on the two-dimensional discrete wavelet transform (DWT) is proposed. In the scheme, digital watermarking with a pseudo-random sequence is derived from a full logistic map system, and the robustness is achieved by embedding every bit of watermark sequence several times in many different locations in approximate sub-band of one-level...
Nowadays, digital watermarking algorithms are widely applied to ownership protection and tampering detection of digital images. In this paper, a new reversible image ownership and tampering authentication scheme based on public key system is proposed. In the scheme, the original image is split into many non-overlapping blocks. Feature information of image is extracted according the attribute of the...
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