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This paper presents a reversible fragile watermarking scheme for the authentication of demosaicked images. Each authentication code is embedded into the two rebuilt components of each color pixel by using a designed authentication table (ACT). The utilization of ACT secures the watermarking procedure and the watermarked image can be recovered back to the original demosaicked image by the proposed...
In 2007, Wang et al. proposed two visual secret sharing (VSS) schemes based on Boolean operations. The first one is a probabilistic (2, n) secret sharing scheme called (2, n) ProbVSS scheme for binary images. The other is a deterministic (n, n) secret sharing scheme for grayscale images. Although Wang et al.psilas two schemes solve the problems of computational complexity and pixel expansion at the...
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