Quantitative Weighted Visual Cryptographic (k, m, n) Method

Table 3

The contrast of the proposed scheme under the (3, 2, 4) threshold, compared with Tu et al. [32], Fan et al. [31], and Yang et al. [30].

Collected shadows	Ours	Tu et al. [32]	Fan et al. [31]	Yang et al. [30]
	—	0.1035	0.1105	0.1096
	—	0.1226	0.1526	0.1531
	0.2432	0.1505	0.1993	0.1985
	—	0.1681	0.1981	0.1986
	0.2759	0.1872	0.2486	0.2491
	0.2962	0.2176	0.3021	0.3045
	0.2925	0.2249	0.2488	0.2485
	0.3486	0.2523	0.3038	0.3040
	0.3821	0.2841	0.3623	0.3642
	0.4414	0.3192	0.4263	0.4278
	1	0.3873	0.4988	0.4996