[1]Hefei Electronic Engineering Institute,Hefei230037,China;
[1]Hefei Electronic Engineering Institute,Hefei230037,China;
[1]Hefei Electronic Engineering Institute,Hefei230037,China;
[1]Hefei Electronic Engineering Institute,Hefei230037,China;
[1]Hefei Electronic Engineering Institute,Hefei230037,China;
Visual cryptography; Visual quality; Contrast; Clarity; Social computing;