(k,n) Extended Visual Secret Sharing Scheme with Colored Cover Images
Daoshun Wang · Journal of Wuhan University · 2008
To solve the pixel expansion problem in extended colored visual secret sharing scheme(EVSS scheme),a new way to construct(k,n) extended visual secret sharing scheme with colored cover images by modifying black-white(k,n) visual secret sharing scheme(VSS scheme),based on the gray(k,n)-EVSS scheme,is proposed in this paper.The cover images of the EVSS scheme constructed in this way are n meaningful colored images,and the pixel expansion is the same as that for black-white(k,n)-VSS scheme.