Single-Pixel Imaging Authentication Using Sparse Hadamard Spectrum Coefficients

Yin Xiao, Lina Zhou, Wen Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


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 languageEnglish
Article number8894066
Pages (from-to)1975-1978
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number24
Publication statusPublished - 15 Dec 2019


  • 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

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