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 Concept Videos

Deconvolution01:20

Deconvolution

429
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
429
IR and UV–Vis Spectroscopy of Aldehydes and Ketones01:29

IR and UV–Vis Spectroscopy of Aldehydes and Ketones

6.9K
Infrared spectroscopy, also known as vibrational spectroscopy, is mainly used to determine the types of bonds and functional groups in molecules. In aldehydes and ketones, the carbonyl (C=O) bond shows an absorption around 1710 cm-1. The C=O bond vibration of an aldehyde occurs at lower frequencies than that of a ketone. In addition to the C=O absorption in an aldehyde, the aldehydic C–H bond also gives two peaks in the 2700–2800 cm-1 range. This absorption, coupled with the...
6.9K
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

846
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
846
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

2.7K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
2.7K
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.4K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.4K

You might also read

Related Articles

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

Sort by
Same author

Assessing Color Inconstancy of CAD/CAM Materials: Influence of CIE White LED Illuminants and Substrate Shade.

Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]·2026
Same author

NeuroFLAME: A Scalable, Privacy-Preserving Federated Framework for Secure, Reproducible, and Multi-Site Neuroimaging Analysis.

bioRxiv : the preprint server for biology·2026
Same author

Enhancing Resident Education in Informed Consent Through Digital Checklists.

The American surgeon·2026
Same author

Personalized Video Education in Surgical Consent: Lessons from a Diverse Safety-Net Population.

Joint Commission journal on quality and patient safety·2026
Same author

Expert consensus on intracranial vessel wall MRI in cerebrovascular disease: Society for Magnetic Resonance Angiography recommendations.

European radiology·2026
Same author

Clinical Manifestations.

Alzheimer's & dementia : the journal of the Alzheimer's Association·2025

Related Experiment Video

Updated: Nov 28, 2025

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
07:05

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

Published on: June 18, 2021

2.7K

Single Image Dehazing Algorithm Analysis with Hyperspectral Images in the Visible Range.

Miguel Ángel Martínez-Domingo1, Eva M Valero1, Juan L Nieves1

  • 1Department of Optics, Faculty of Science, University of Granada, 18071 Granada, Spain.

Sensors (Basel, Switzerland)
|November 26, 2020
PubMed
Summary

This study evaluated single image dehazing algorithms on spectral images. Higher wavelengths and lower haze levels improve image quality, with algorithm performance depending on evaluation metrics and observer tasks.

Keywords:
defoggingdehazingimage qualityspectral imagingwavelength

More Related Videos

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures
08:49

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures

Published on: December 1, 2023

1.8K
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
07:24

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

18.1K

Related Experiment Videos

Last Updated: Nov 28, 2025

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
07:05

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

Published on: June 18, 2021

2.7K
Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures
08:49

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures

Published on: December 1, 2023

1.8K
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
07:24

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

18.1K

Area of Science:

  • Computer Vision
  • Image Processing
  • Atmospheric Optics

Background:

  • Image degradation in foggy/hazy conditions reduces contrast, visibility, and alters color due to scattering and attenuation.
  • Degradation is influenced by distance, atmospheric particle density, and light wavelength.

Purpose of the Study:

  • To evaluate the performance of five single image dehazing algorithms on spectral hazy images.
  • To assess algorithm effectiveness across different wavelengths and atmospheric conditions.
  • To compare objective metrics with subjective human perception of dehazed image quality.

Main Methods:

  • Applied five RGB-based, unsupervised single image dehazing algorithms to a spectral hazy image database.
  • Evaluated performance using eleven state-of-the-art quantitative metrics.
  • Conducted two psychophysical experiments with 126 human subjects to assess perceived image quality.

Main Results:

  • Image quality of dehazed spectral images generally increases with higher wavelengths in the visible spectrum.
  • Improved quality was observed under conditions of low haze or fog density.
  • The optimal algorithm choice varied based on the specific evaluation metric's criteria.
  • Psychophysical experiments revealed observer-metric agreement depends on the defined observer task.

Conclusions:

  • Wavelength and haze density are critical factors in spectral image dehazing effectiveness.
  • Objective metrics and subjective evaluations provide complementary insights into dehazing performance.
  • Algorithm selection should consider the specific application and desired outcome (e.g., visual quality vs. feature preservation).