Novel Approach for Visual Cryptography Using Adaptive Local Filter

Visual cryptography scheme is an encryption method that is used to encode secret written materials into an image and encode this image into n share images. The decoding only requires only selecting some subset of these n images, making transparencies of them and stacking them on top of each other. A distinctive property of visual cryptography scheme is that one can visually, without computation, decode the secret by superimposing share images. This paper focuses on the sharing of color secret image into the cover images as share images. The quality of decrypted image is increased by applying adaptive local filter which reduces noise introduced during encryption and decryption process.

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