Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Aliasing

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...

You might also read

Related Articles

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

Sort by

Same author

Integrating high-throughput phenomics and GWAS unravels the HaCBF4-<i>HaHAK11</i> module to regulate salt stress tolerance in sunflower (<i>Helianthus annuus</i> L.).

Horticulture research·2026

Same author

Altered temporal variability-based functional reorganization of brain networks predicts motor outcome after stroke.

Journal of neuroengineering and rehabilitation·2026

Same author

Comparative analysis of the GRAS transcription factor family in oilseed and confectionery sunflower identifies HaGRAS19 as a regulator of salt stress responses.

Plant physiology and biochemistry : PPB·2026

Same author

Physical extraction, structural characteristics and food-related bioactivities of edible fungi polysaccharides: A review.

International journal of biological macromolecules·2026

Same author

All-fiber ten-mode group erbium-doped amplifier for gain equalization with high gain.

Optics express·2025

Same author

Prediction of 2D heterostructure GaSe/YGaS<sub>3</sub> for highly efficient photocatalytic water splitting.

Physical chemistry chemical physics : PCCP·2025

Search research articles

Related Experiment Video

Updated: Jul 9, 2025

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

Published on: February 8, 2014

Three-dimensional computer-generated holography based on the hybrid iterative angular spectrum algorithm.

Zhongsheng Zhai, Qinyang Li, Zhi Xiong

|November 29, 2023

Summary

This summary is machine-generated.

This study introduces a new 3D hologram calculation method using the angular spectrum approach to reduce noise during reconstruction. The technique improves hologram quality and spatial resource utilization for multi-image reconstruction.

More Related Videos

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

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

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

Published on: January 14, 2020

Related Experiment Videos

Last Updated: Jul 9, 2025

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

Published on: February 8, 2014

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

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

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

Published on: January 14, 2020

Area of Science:

Optics and Photonics
Computational Imaging
Digital Holography

Background:

Hologram reconstruction often suffers from noise, limiting image quality.
Existing methods may rely on approximations like the paraxial assumption.
Efficient multi-image reconstruction requires effective spatial resource management.

Purpose of the Study:

To develop a novel 3D hologram calculation method to reduce reconstruction noise.
To avoid paraxial approximations in hologram propagation.
To enhance multi-image reconstruction quality and spatial efficiency.

Main Methods:

Utilizing the angular spectrum approach for layer-by-layer image propagation.
Implementing an error iteration algorithm to minimize aliasing errors.
Introducing constraint factors for inter-layer management in multi-image reconstruction.

Main Results:

Successfully reduced noise during hologram reconstruction.
Demonstrated improved hologram quality by alleviating aliasing errors.
Showcased effective spatial resource utilization and mitigation of inter-layer crosstalk.

Conclusions:

The proposed method offers a viable approach for high-quality 3D hologram reconstruction.
Numerical simulations and optical experiments validate the method's effectiveness.
The technique has broad applicability to various 3D reconstruction algorithms.