Image Broadcasting based on visual cryptography an
2016-08-23
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The proposed security system composed of two Visual Secret Sharing Schemes (VSSS) and one image hiding method.
The first proposed VSSS depends on modified idea of traditional VC with pixel expansion of four sub pixel that will make the shares four times larger than the origin image while, the second proposed VSSS depends on modified idea of probabilistic VC with no pixel expansion which means the encrypted shares are the same size as the origin image.
The proposed hiding method is based on hiding bits of the secret image in the coefficients of DCT of the cover image.
matlab
图像
加密
视觉
广播
基于
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