Virtually optical information verification with a hierarchical structure

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6 Citations (Scopus)


A virtually optical system with a hierarchical structure is designed for optical verification. At each hierarchical level, two phase-only masks are alternately generated using an iterative approach and then are sparsified. All sparse phase-only masks generated at the lower hierarchical levels are fixed and applied as constraints at the higher hierarchical level. Since sparse phase-only masks are applied for the decoding, the recovered images are invisible and instead can be further verified by a nonlinear correlation algorithm. The results are presented to show validity of the proposed method, and the proposed method provides a promising strategy for optical verification.
Original languageEnglish
Article number010502
JournalOptical Engineering
Issue number1
Publication statusPublished - 1 Jan 2018


  • hierarchical structure
  • optical information verification
  • phase retrieval

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering


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