New watermark embedding technique using visual cryptography

Visual Cryptography eventually focused on a technique encryption and decryption of either text or images. This paper gives the brief idea of cryptography and watermarking on images. For that the new term Progressive Visual Cryptography (PVC) comes in which we create n number of shares of a secret image. Progressive Visual Cryptography (PVC) means progressively recover the secret image by superimposing the n shares of particular secret image. We have the scheme structure given below for making n shares of any secret image. This scheme structure possibly gives sharing matrices which gives the idea about how secret image can distribute among n shares. The scheme structure implemented in matlab. With the help of determination of various types of pixels the watermark embedding technique is implemented in this paper after finding the prediction error using those pixels. This technique is also implemented in matlab for both grayscale and color images.