A Secure Asymmetric Optical Image Encryption Based on Phase Truncation and Singular Value Decomposition in Linear Canonical Transform Domain

Table 1

Calculation of CC value along horizontal, diagonal, and vertical of original and cipher images.

Image	Original image			Cipher image
	Horizontal	Diagonal	Vertical	Horizontal	Diagonal	Vertical
Lena	0.9562	0.9509	0.9817	0.0093	0.0121	0.0086
Baboon	0.9077	0.7566	0.8179	0.0077	0.0092	0.0157
OPT	0.9497	0.9354	0.9695	0.0106	0.0020	0.0092
Optical image processing	0.8994	0.8586	0.9465	0.0006	0.0038	0.0048