Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
RGB histogram comparison between original and ciphered Images: (a) Original color images of Butterfly68, Baboon71 and Peppers72; (b) RGB histogram of the original images; (c) Encrypted images; (d) RGB histogram of encrypted images.