An Efficient Cryptosystem for Video Surveillance in the Internet of Things Environment

Table 4

The local Shannon entropy comparison tests.

Algorithm	Entropy
	Horizontal	Vertical	Diagonal
Lenna image	0.9849	0.9345	0.9226
Our cryptosystem	0.0019	0.025	0.0028
Gong et al. [12]	0.4968	0.4938	0.0480
Zhou et al. [40]	0.0119	0.0925	0.0325
Chen et al. [41]	−0.0016	−0.001	−0.0014