If you use these codes, please cite in the below papers:
[1] Hazer, Abdurrahman, and Remzi Yıldırım. "A review of single and multiple optical image encryption techniques." Journal of Optics (2021). [2] Guohai Situ and Jingjuan Zhang, "Multiple-image encryption by wavelength multiplexing," Opt. Lett. 30, 1306-1308 (2005). [3] Situ, Guohai, and Jingjuan Zhang. "Position multiplexing for multiple-image encryption." Journal of Optics A: Pure and Applied Optics 8.5 (2006): 391.