A Secure and Efficient Image Transmission Scheme Based on Two Chaotic Maps

Table 5

Histogram variance test results of some images.

Algorithm	Image	Variance
	Lena256.bmp	33860.0546
[13]	Cipher image	266.7578
[16]	Cipher image	260.7188
[17]	Cipher image	276.3906
SIT-SR	Cipher image	257.1094
	Random image	253.8946

The bold value means that SIT-SR has the best test result among four compared schemes.