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

Upsampling

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...

Properties of Fourier Transform II

Properties of Fourier Transform II

The Fourier Transform (FT) is an essential mathematical tool in signal processing, transforming a time-domain signal into its frequency-domain representation. This transformation elucidates the relationship between time and frequency domains through several properties, each revealing unique aspects of signal behavior.
The Frequency Shifting property of Fourier Transforms highlights that a shift in the frequency domain corresponds to a phase shift in the time domain. Mathematically, if x(t) has...

You might also read

Related Articles

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

Sort by

Same author

Ultimate spectral purity of the tender X-ray radiation diffracted from a wideband multilayer coated blazed grating.

Optics express·2026

Same author

Imaginary Poynting momentum: polarization topology and versatile optical manipulation.

National science review·2026

Same author

Targeting mitochondrial fission-autophagy axis in rheumatoid arthritis: leflunomide promote apoptosis of fibroblast-like synoviocytes.

Arthritis research & therapy·2026

Same author

Characterization and fabrication of high-performance B<sub>4</sub>C-coated mirrors for X-ray free-electron lasers.

Applied optics·2026

Same author

Double-helix optical point spread function enables real-time mesoscopic 3D functional microangiography in the living mouse brain and skull.

Nature communications·2026

Same author

Metasurface-Enabled On-Chip Three-Dimensional Optical Manipulation.

ACS nano·2026

Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026

Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026

Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026

Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026

Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026

Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Aug 8, 2025

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Published on: June 18, 2021

Superposition Fabry-Perot filter array for a computational hyperspectral camera.

Shiqi Feng, Zhanshan Wang, Xinbin Cheng

|March 1, 2023

Summary

This summary is machine-generated.

This study introduces a novel superposition Fabry-Perot (SFP) encoded filter for computational hyperspectral cameras, significantly improving spectral reconstruction accuracy and working angle while enabling low-cost manufacturing.

More Related Videos

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Published on: June 2, 2010

Related Experiment Videos

Last Updated: Aug 8, 2025

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Published on: June 18, 2021

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

Published on: June 2, 2010

Area of Science:

Optics and Photonics
Computational Imaging
Materials Science

Background:

Computational hyperspectral cameras offer high-precision spectrum reconstruction using limited filters.
Conventional encoded filter arrays struggle to balance spectral control, angle insensitivity, and manufacturability.

Purpose of the Study:

To develop a novel encoded filter for computational hyperspectral cameras that overcomes limitations of existing designs.
To enhance spectral reconstruction accuracy, angular field of view, and manufacturing feasibility.

Main Methods:

Designed a new encoded filter based on a superposition Fabry-Perot (SFP) resonance cavity.
Employed an end-to-end learning approach for optimizing SFP encoder and neural network decoder parameters.
Integrated the SFP filter array into a computational hyperspectral camera system.

Main Results:

Achieved up to 2.24 times higher spectral reconstruction accuracy compared to conventional methods.
Demonstrated a 10 times wider working angle for the hyperspectral camera.
Confirmed the feasibility of low-cost manufacturing processes for the SFP filter array.

Conclusions:

The proposed SFP encoded filter offers a significant advancement in computational hyperspectral imaging.
This technology enables improved performance metrics and cost-effective production for hyperspectral cameras.