Abstract
We experimentally present optical authentication using a small number of Hadamard spectrum coefficients in single-pixel imaging (SPI). A method is applied to generate sparse Hadamard spectrum coefficients in the SPI. By randomly selecting and using a small number of Hadamard spectrum coefficients (e.g., less than 8.0% of Nyquist limit), information of an object (i.e., plaintext) can be effectively hidden in the decrypted object. Although the decrypted object cannot visually render information about the plaintext, it can be effectively authenticated. Optical experiment is conducted to verify feasibility and effectiveness of the proposed optical authentication method. It is expected that the proposed method can provide a promising insight for single-pixel optical authentication.
Original language | English |
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Article number | 8894066 |
Pages (from-to) | 1975-1978 |
Number of pages | 4 |
Journal | IEEE Photonics Technology Letters |
Volume | 31 |
Issue number | 24 |
DOIs | |
Publication status | Published - 15 Dec 2019 |
Keywords
- Hadamard transform
- optical authentication
- Optical security
- single-pixel imaging
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering