A Wavelet Compression Based on Scheme of Visual Cryptography for inary Images
An Shao · Acta Scientiarum Naturalium Universitatis Sunyatseni · 2002
Visual cryptography is a cryptographic paradigm introduced by Naor and Shamir in Cryptology_Eurocrypt'94. Whereas the pixel expansion makes the size of the share transparencies big.This paper applies wavelet transform to compress the share images and reduces the size.