Robust Visual Secret Sharing Scheme Applying to QR Code

Table 1

The characteristics of QR code version 7 and version 8.

Version	Total codewords	Error correction level	Number of error correction codewords	Number of blocks	Error correction code per (c, k, r)
7	196	L	4	2	(98, 7810)
		M	72	4	(49, 31, 9)
		Q	108	2	(32, 14, 9)
				4	(33, 15, 9)
		H	130	4	(39, 13, 13)
				1	(40, 14, 13)
8	242	L	48	2	(121, 97, 12)
		M	88	2	(60, 38, 11)
				2	(61, 39, 11)
		Q	132	4	(40, 18, 11)
				2	(41, 19, 11)
		H	156	4	(40, 14, 13)
				2	(41, 15, 13)

  :c=total number of codewords; k=total number of datawords; r=error correction capacity.