Jove
Visualize
Contact Us
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

Related Experiment Videos

Phase unwrapping using an extrapolation-projection algorithm.

Boris Marendic1, Yongyi Yang, Henry Stark

  • 1DSP Center of Excellence, Motorolla Inc., Schaumburg, IL 60196, USA.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|July 13, 2006
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

A upper critical solution temperature- and synergistic antioxidant-responsive tremella polysaccharide hydrogel for enhancing diabetic wound healing.

Biomaterials advances·2026
Same author

A long noncoding RNA modulates anthocyanin biosynthesis in Camellia sinensis.

Communications biology·2026
Same author

Differential physiological responses and transcriptome co-expression networks of salt-tolerant and salt-sensitive foxtail millet (<i>Setaria italica</i> (L.)) under salt stress.

Frontiers in plant science·2026
Same author

A data-driven respiratory motion correction for pediatric DMSA renal SPECT imaging: A simulation study.

Medical physics·2026
Same author

Investigation of Attenuation Correction Methods for Dual-Gated Single Photon Emission Computed Tomography (DG-SPECT).

Bioengineering (Basel, Switzerland)·2025
Same author

Convergence and stability analysis of recurrent neural networks for rapid structural damage assessment under seismic loads.

PloS one·2025
Same journal

Multi-module collaborative optimization-driven fast speckle correlation imaging in variable environments.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same journal

Secrecy performance analysis of NOMA-UWOC systems over a vertically stratified WGG oceanic turbulence channel.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same journal

Backscattering of plane waves in a composite system containing a rough surface and anisotropic scatterers.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same journal

Aspherical surface construction methods based on extended Jacobi polynomials.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same journal

OCT sidelobe suppression method based on dual-path phase sinusoidal modulation and minimum value fusion.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
Same journal

Optical design concepts using wavelength-selective diffractive optics to enable miniaturized multimodal endoscopic imaging across separated spectral ranges.

Journal of the Optical Society of America. A, Optics, image science, and vision·2026
See all related articles

This study introduces a global, iterative algorithm for two-dimensional phase unwrapping, enhancing imaging systems. The robust extrapolation-projection method effectively handles noisy data, offering an alternative to local techniques.

Area of Science:

  • Image Processing
  • Computational Imaging
  • Applied Mathematics

Background:

  • Phase unwrapping is critical for reconstructing images from phase data in various imaging systems.
  • Existing methods often rely on local, pixel-by-pixel analysis, which can be sensitive to noise and errors.
  • A global approach is needed to overcome limitations of local phase unwrapping techniques.

Purpose of the Study:

  • To develop and evaluate a robust, global algorithm for two-dimensional phase unwrapping.
  • To demonstrate the effectiveness of an iterative extrapolation-projection method for phase unwrapping.
  • To compare the proposed algorithm's performance against established methods, particularly in noisy conditions.

Main Methods:

  • An iterative extrapolation-projection algorithm, modified from the Gerchberg-Papoulis method, is employed.

Related Experiment Videos

  • The algorithm refines the phase unwrapping solution by projecting onto available global data at each iteration.
  • The approach processes phase information globally, rather than on a local, pixel-by-pixel basis.

    • Main Results:

    • The robust extrapolation-projection algorithm successfully performs two-dimensional phase unwrapping.
    • The algorithm demonstrates strong performance and resilience in noisy environments.
    • Comparative analysis shows favorable results against a well-known least-squares algorithm.

    Conclusions:

    • The proposed global extrapolation-projection algorithm offers a robust and effective solution for two-dimensional phase unwrapping.
    • This method provides a valuable alternative to local unwrapping techniques, especially in challenging, noisy imaging scenarios.
    • The iterative refinement through projection enhances the accuracy and reliability of the phase unwrapping process.