Quality‐improved threshold visual secret sharing scheme by random grids
Yao-Sheng Lee, Bingjian Wang, Tzung‐Her Chen · IET Image Processing · 2013
Random grids (RGs)‐based visual secret sharing (VSS) has gained much attention in academia than before to avoid the potential drawbacks in visual cryptography‐based VSS. With its still being in infancy, a growing number of researches to RG‐based VSS demonstrate a great potential. Although there are some RG‐based schemes proposed in the past years for different applications, most of them can still be improved to achieve a better performance. This study proposes a new threshold RG‐based VSS scheme with better performance compared with the previous threshold RG‐based VSS scheme. The experimental results illustrate the feasibility; the better performance is theoretically analysed.