1. An optical multiple-image authentication based on computational ghost imaging and total-variation minimization
- Author
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Yaoling Zhou, Yueer Sun, Mu Yang, Junzhao Hou, Zhaolin Xiao, Asundi Anand, and Liansheng Sui
- Subjects
Multiple-image authentication ,Computational ghost imaging ,Total-variation minimization ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
An optical multiple-image authentication is suggested using computational ghost imaging and total-variation minimization. Differing from encrypting multiple images into a noise-like ciphertext directly, as described in most conventional authentication methods, the related encoded information is embedded into a cover image to avoid the attention of eavesdroppers. First, multiple images are encoded to form real-valued sequences composed of corresponding bucket values obtained by the aid of computational ghost imaging, and four sub-images are obtained by decomposing the cover image using wavelet transform. Second, measured sequences are embedded into one of the sub-images, and embedding positions are randomly selected using corresponding binary masks. To enhance the security level, a chaotic sequence is produced using logistic map and used to scramble measured intensities. Most importantly, original images with high quality can be directly recovered using total-variation minimization. The validity and robustness of the proposed approach are verified with optical experiments.
- Published
- 2023
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