Visual Cryptography by Speckle Pattern Illumination
AbstractWe used for the first time the speckle pattern created by the scattered laser beam from rough surfaces in order to perform the visual secret sharing (visual cryptography), which is alternative material for random grid pattern. Segmentation and binarization of the speckle pattern was performed for making one share embedding secret image. Reconstruction of the secret image was successfully achieved by the product between the share and the original speckle pattern.
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