Design and Implementation of a (2,2) and a (2,3) Visual Cryptographic Scheme
In this paper two methods for (2, 2) and (2, 3) Visual Cryptographic Scheme(VCS) is proposed. The first scheme considers 4 pixels of input image at a time and generates 4 output pixels in each share. As 4 output pixels are generated from 4 input pixels dimension and aspect ratio of the decrypted image remain same during the process. The second scheme considers 2 pixels (1 block) of input image at a time and generates 3 output pixels in each share.