Modified Pixel Sieve Method for Visual Cryptography

Visual cryptography encodes a secret image into n shares which are distributed to n participants. Pixel Sieve method was proposed recently toencode an image into shares, but the encryption quality is poor. In this paper an modified version of pixel sieve method is proposed to achievemore security than existing pixel sieve method. Based on key shifting scheme, the proposed method generates quite noisy and highly secureencrypted images. The simulation shows that the quality of the encrypted images observably better than existing pixel sieve method