A New Visual Cryptographic Scheme (VCS) for Grey-Scale and Colour Images
نویسندگان
چکیده
منابع مشابه
Using Color Visual Cryptography Schemes and Watermarking for Sharing Black and White Secret Images
Visual cryptography is a new secure technology that distributes a secret image by separating it into a number of shares using different visual cryptography schemes (VCS). Early VCS schemes mainly focused on black-and-white secret images. Using a black & white VCS normally degrade the image quality and also suffered from a major drawback of pixel expansion, which means that the size of each secr...
متن کاملUsing Color Visual Cryptography Schemes and Watermarking for Sharing Black and White Secret Images
Visual cryptography is a new secure technology that distributes a secret image by separating it into a number of shares using different visual cryptography schemes (VCS). Early VCS schemes mainly focused on black-and-white secret images. Using a black & white VCS normally degrade the image quality and also suffered from a major drawback of pixel expansion, which means that the size of each secr...
متن کاملUsing Color Visual Cryptography Schemes and Watermarking for Sharing Black and White Secret Images
Visual cryptography is a new secure technology that distributes a secret image by separating it into a number of shares using different visual cryptography schemes (VCS). Early VCS schemes mainly focused on black-and-white secret images. Using a black & white VCS normally degrade the image quality and also suffered from a major drawback of pixel expansion, which means that the size of each secr...
متن کاملA Visual Cryptographic Technicque for Chromatic Images Using Multi-Pixel Encoding Method
Visual cryptography is a secret sharing method that uses human eyes to decrypt the secret. Most visual cryptographic methods utilize the technique of pixel expansion, which causes the size of the shares to be much larger than that of the secret image. This situation is more serious for grey-level and chromatic images. In this paper, we propose a multi-pixel encoding method for grey-level and ch...
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Secure digital images is very important for today’s scenario which combining methods and techniques coming from cryptography and image processing. Visual Cryptography Scheme (VCS) is a new kind of cryptography technique which allows visual information (e.g. printed text, picture etc.) to be encrypted in such a way that decryption can be performed by the human visual system without any complex c...
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تاریخ انتشار 2009