Jove
Visualize
Contact Us

Related Experiment Videos

Multiple-phase retrieval for optical security systems by use of random-phase encoding.

Hsuan T Chang1, Wei C Lu, Chung J Kuo

  • 1National Yunlin University of Science and Technology, Department of Electrical Engineering, Touliu Yunlin, Taiwan. htchang@pine.yuntech.edu.tw

Applied Optics
|August 29, 2002
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Image multiplexing and encryption using the nonnegative matrix factorization method adopting digital holography.

Applied optics·2017
Same author

Speckle reduction by combination of digital filter and optical suppression in a modified Gerchberg-Saxton algorithm computer-generated hologram.

Applied optics·2014
Same author

A computer-aided method for automatic localization and thickness measurement of peritoneum in ultrasound images.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2012
Same author

Lensless optical data embedding system using concealogram and cascaded digital Fresnel hologram.

Journal of the Optical Society of America. A, Optics, image science, and vision·2011
Same author

Wavelength multiplexing multiple-image encryption using cascaded phase-only masks in the Fresnel transform domain.

Applied optics·2011
Same author

Multiple-image encryption and multiplexing using a modified Gerchberg-Saxton algorithm and phase modulation in Fresnel-transform domain.

Optics letters·2009
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

This paper introduces a new multiple phase encoding technique for optical security systems. The improved algorithm enhances retrieval speed and image accuracy for secure optical verification.

Area of Science:

  • Optics
  • Information Security
  • Image Processing

Background:

  • Optical security systems commonly utilize 4-f correlator architectures for image encryption and verification.
  • Existing methods for phase mask retrieval can suffer from slow convergence and reduced image fidelity.

Purpose of the Study:

  • To present a novel multiple phase encoding technique for enhanced optical security and verification.
  • To improve the performance of phase retrieval algorithms in optical security applications.

Main Methods:

  • The study employs a 4-f optical correlator architecture.
  • A new multiple phases retrieval algorithm (MPRA) is proposed for iterative phase mask retrieval.
  • Quantization effects and their relationship with phase levels are analyzed.

Related Experiment Videos

Main Results:

  • The MPRA significantly increases the convergence speed of the iteration process.
  • The recovered images show higher similarity to the target image compared to previous methods.
  • Simulations indicate that two or three phase masks are sufficient for efficient systems with 64 and 32 phase levels, respectively.

Conclusions:

  • The proposed multiple phase encoding technique offers improved performance for optical security and verification.
  • The MPRA provides a more efficient and accurate method for phase mask retrieval.
  • The findings suggest practical implementation guidelines regarding phase masks and quantization levels.