. 2022 Jan 25;81(5):7253–7270. doi: 10.1007/s11042-021-11812-0

Table 3.

Comparison of variance of the histogram of Lena Image

The variance of the histogram of the Plain Lena Image (256 × 256)	The variance of the histogram of cipher image
	Proposed Scheme	X. Chai et al. (2019) [8]	X. Chai et al (2017) [7]
3.0786e + 04	237.2784	226.7	260.7188