Various image encryption scheme using visual cryptography

Visual Cryptography is an emerging field of computer research. It is a technique of cryptography which allows the visual information (text, images, handwritten notes, diagrams, and picture etc.) to be encrypted. The basis of the technique is the superimposition of the two semi transparent layers which is called shares. The encoded system can be decrypted by human vision, it does not require any decryption algorithm of computer system to decode. In this paper we represent different cryptography techniques and its applications.