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Updated: May 9, 2026

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
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Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display

Published on: January 14, 2020

Gray tone image watermarking with complementary computer generated holography.

Christophe Martinez1, Fabien Laulagnet, Olivier Lemonnier

  • 1CEA, LETI, MINATEC campus, DOPT, SCOOP, 17 rue des Martyrs, Grenoble, 38054, France. christophe.martinez@cea.fr

Optics Express
|July 12, 2013
PubMed
Summary
This summary is machine-generated.

We developed a new method for watermarking holograms in grayscale images for microscopic archiving. This approach, based on complementary holography, uses elliptical patterns and confirms hologram amplitude

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Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
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Last Updated: May 9, 2026

Recording Ultra-Realistic Full-Color Analog Holograms for Use in a Moving Hologram Display
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Published on: January 14, 2020

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
10:16

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Area of Science:

  • Digital holography
  • Image archiving
  • Watermarking techniques

Background:

  • Microscopic image archiving requires robust methods for data integrity.
  • Existing hologram watermarking techniques may have limitations in gray tone images.
  • Complementary holography offers a potential framework for secure image data.

Purpose of the Study:

  • To introduce and evaluate an original watermarking approach for gray tone holograms.
  • To adapt complementary holography principles for microscopic halftone image archiving.
  • To explore alternative diffraction patterns for improved watermarking.

Main Methods:

  • Implementation of a novel watermarking concept based on complementary holography.
  • Theoretical evaluation of the watermarking efficiency.
  • Experimental validation using gray tone microscopic halftone images.
  • Investigation of elliptical diffraction patterns versus rectangular ones.

Main Results:

  • The proposed watermarking method is theoretically and experimentally efficient.
  • Elliptical diffraction patterns are shown to be a viable alternative to rectangular patterns.
  • The amplitude of the hologram plays a secondary role in the hologram recovery process.
  • Successful watermarking of gray tone holograms for archiving applications.

Conclusions:

  • The novel watermarking approach is effective for gray tone microscopic halftone image archiving.
  • Elliptical diffraction patterns offer advantages in this watermarking context.
  • The findings contribute to secure and reliable archiving of holographic data.