An Improved Essential Secret Image Sharing Scheme with Smaller Shadow Size
Peng Li, Zuquan Liu · International Journal of Digital Crime and Forensics · 2018
This article describes how in conventional (k, n) secret image sharing (SIS), any k or more shadows can be collaborated together to reveal the secret image. Usually, all shadows have the same importance. Recently, an essential (t, s, k, n) secret image sharing (ESIS) with different importance of shadows were proposed where the n shadows are divided into s essential shadows and n − s non-essential shadows. In reconstruction, it needs at least k shadows which should include at least t essential shadows. In this article, the authors propose an improved (t, s, k, n)-ESIS scheme, where t