Proceedings ArticleDOI
Synthesis and 3D display of multi-wavelengths digital holograms through adaptive transformation
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TLDR
A reconstructing method of digital color holograms based on the stretching techniques is proposed, able to manage the focus of the digital color reconstructions of the same object in order to obtain a synthetic single digital hologram in which three different colors are multiplexed.Abstract:
We propose a reconstructing method of digital color holograms based on the stretching techniques. With a simple affine
transformation on the Fresnel reconstructions, we are able to manage the focus of the digital color reconstructions of the
same object in order to obtain a synthetic single digital hologram in which three different colors are multiplexed. In
addition, a 3D scene is synthesized combining multiple optically recorded digital color holograms of different objects.
Numerical analysis and display tests are used to evaluate the effectiveness of the proposed method.read more
Citations
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Journal ArticleDOI
High sensitive materials in medical holographic microscopy
TL;DR: In this paper, a thin layer of ultrafine grains of silver halide crystals of around 10 nm average diameter, dispersed in a colloid and coated on a substrate is used as the recording media.
Proceedings ArticleDOI
Color optical biopsy
TL;DR: Progress has been made towards the development of a flexible true color holographic imaging device for direct optical biopsy that can potentially be used for surgical techniques employing direct visualization, including endoscopy and laparoscopy.
References
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Phase-shifting color digital holography.
TL;DR: Compared the images reconstructed by two algorithms using a single Fourier transformation and a convolution with each other by both experiments and numerical simulations have proved not to cause serious deterioration of the reconstructed images.
Journal ArticleDOI
Controlling image size as a function of distance and wavelength in Fresnel-transform reconstruction of digital holograms
Pietro Ferraro,Sergio De Nicola,Giuseppe Coppola,Andrea Finizio,Domenico Alfieri,Giovanni Pierattini +5 more
TL;DR: A method for controlling the size of amplitude and phase images reconstructed from digital holograms by the Fresnel-transform method is proposed and demonstrated and solves the problem of superimposition in multiwavelength digital holography for color display and holographic interferometry applications.
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Quantitative phase imaging by three-wavelength digital holography.
TL;DR: Three-wavelength digital holography is applied to obtain surface height measurements over several microns of range, while simultaneously maintaining the low noise precision of the single wavelength phase measurement.
Journal ArticleDOI
Quantitative Phase Microscopy of microstructures with extended measurement range and correction of chromatic aberrations by multiwavelength digital holography
Pietro Ferraro,Lisa Miccio,Simonetta Grilli,Melania Paturzo,S. De Nicola,Andrea Finizio,Roberto Osellame,P. Laporta +7 more
TL;DR: It is proposed and demonstrated that by Digital Holography (DH) in a microscope configuration it is possible to clear out the QPM map from the chromatic aberration in a simpler and more effective way with respect to other approaches.
Journal ArticleDOI
Recording and reconstruction of a color holographic image by using digital lensless Fourier transform holography
TL;DR: This digital color holography with high quality of reconstruction effect would have potential applications on digital holographic display of color objects.