Contrast Enhancement in Color Extended Visual Cryptography
نویسنده
چکیده
Visual cryptography is a secret sharing technique mainly used for image sharing. In the case of extended visual cryptography we use meaningful shares to hide image. Contrast loss in decrypted image is a major problem. Here we use Additional basis matrix and perfect white pixel reconstruction to improve the contrast in color extended visual cryptography. Keywords— Visual Cryptography (VC), Halftoning, Error diffusion, Secret sharing, Pixel expansion
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