Contrast Grayscale Image in Visual Cryptography Using Sigmoid Function
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چکیده
Visual Cryptography (VC), proposed by Naor and Shamir, has numerous uses, including visual authentication and identification, image encryption and steganography for security purpose, and. In this paper Contrast the visual information based on pseudo randomization and pixel reversal using sigmoid function is also proposed. Keywords— Information hiding, Information Security, Halftone image, Visual cryptography, Secret share.
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