[1]Hefei Electronic Engineering Institute,Hefei 230037,China;
[1]Hefei Electronic Engineering Institute,Hefei 230037,China;
[1]Hefei Electronic Engineering Institute,Hefei 230037,China;
[1]Hefei Electronic Engineering Institute,Hefei 230037,China;
[1]Hefei Electronic Engineering Institute,Hefei 230037,China;
Visual secret sharing; QR code; Error correction blocks; Carrier-free; Big data; Data-driven; Multiple decryptions;