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

Color Vision01:24

Color Vision

621
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
621
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)

794
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
794
Indicators02:39

Indicators

48.9K
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
48.9K
&sup1;H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons01:03

¹H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons

2.5K
Protons in identical electronic environments within a molecule are chemically equivalent and have the same chemical shift. The replacement test is a useful tool to identify chemical equivalence and predict NMR spectra. A substituent replaces each of the protons being examined and the resulting molecules are compared. If the same molecule is obtained, the protons are equivalent or homotopic. Replacement of any hydrogens in ethane by chlorine yields chloroethane because all six protons are...
2.5K
Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

8.2K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
8.2K
Interpreting &sup1;H NMR Signal Splitting: The (n + 1) Rule01:10

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

1.4K
In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1  triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the...
1.4K

You might also read

Related Articles

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

Sort by
Same author

An electrochemical sensing platform based on UiO@TATF COF/CB composites for the detection of nitrofurazone.

Analytical and bioanalytical chemistry·2026
Same author

[Effect of acupuncture on ovarian function in rats with premature ovarian insufficiency based on kisspeptin/GPR54 pathway].

Zhongguo zhen jiu = Chinese acupuncture & moxibustion·2026
Same author

Compound Danshen Dripping Pills retards the progression of cerebral cavernous malformations via strengthening vascular integrity and ameliorating inflammatory response.

Phytomedicine : international journal of phytotherapy and phytopharmacology·2026
Same author

Microglial IRF7-induced lipophagy impairment aggravates lipid droplet overload and impedes neurological recovery after ischemic stroke.

Journal of neuroinflammation·2026
Same author

Early Impacts of a Medicaid Value-Based Payment Policy on Quality of Care in a Large Population with Serious Mental Illness.

The journal of mental health policy and economics·2026
Same author

TUBB4A Is Associated with Response to Paclitaxel-Based Therapy in Esophageal Squamous Cell Carcinoma.

The Tohoku journal of experimental medicine·2026
Same journal

Application of ephrin-B2 loaded glycol chitosan-silk fibroin hydrogel in the treatment of diabetic refractory wounds.

Scientific reports·2026
Same journal

International expert Delphi consensus on thromboprophylaxis in metabolic and bariatric surgery.

Scientific reports·2026
Same journal

Assessing the cross-region knowledge transfer capability of selected deep learning building vectorization methods in the context of available training datasets.

Scientific reports·2026
Same journal

Feasibility and preliminary effects of outdoor versus indoor cognitive-motor therapy in women with Alzheimer's disease: A randomized single-blind pilot study.

Scientific reports·2026
Same journal

Hallmarks of social action in the vocal turn-taking of wild common marmosets (Callithrix jacchus).

Scientific reports·2026
Same journal

Role and mechanism of AOPPs-induced NOX4-mediated ferroptosis in intervertebral disc degeneration.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Jul 29, 2025

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions
11:20

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions

Published on: February 21, 2017

6.7K

A dichotomy color quantization algorithm for the HSI color space.

Xia Yu1,2, Huaiyu Zhuang3, Yani Cui4,5

  • 1College of Information and Communication, Hainan University, Haikou, 570100, Hainan, China.

Scientific Reports
|May 19, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a new dichotomy color quantization algorithm for the Hue Saturation Intensity (HSI) color space. This method effectively reduces colors in images, outperforming existing Red Green Blue (RGB) space algorithms.

More Related Videos

Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
09:46

Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores

Published on: August 19, 2013

15.6K
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

2.5K

Related Experiment Videos

Last Updated: Jul 29, 2025

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions
11:20

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions

Published on: February 21, 2017

6.7K
Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
09:46

Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores

Published on: August 19, 2013

15.6K
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

2.5K

Area of Science:

  • Computer Vision
  • Image Processing

Background:

  • Color quantization reduces image colors while preserving pixel count.
  • Existing algorithms primarily use the Red Green Blue (RGB) color space.
  • Hue Saturation Intensity (HSI) color space lacks simple uniform quantization methods.

Purpose of the Study:

  • Propose a novel dichotomy color quantization algorithm for the HSI color space.
  • Develop a method that displays images with fewer colors than RGB-based algorithms.

Main Methods:

  • Construct a single-valued monotonic function for Hue (H) component conversion from RGB to HSI.
  • Implement an iterative quantization algorithm utilizing the monotonic function.
  • Introduce a dichotomy quantization algorithm to enhance the iterative method.

Main Results:

  • The proposed HSI color quantization algorithm achieves promising results.
  • Visual and numerical evaluations confirm the algorithm's effectiveness.
  • The method enables image display with a reduced color palette compared to RGB methods.

Conclusions:

  • The developed dichotomy algorithm offers an effective approach for HSI color quantization.
  • This method provides a valuable alternative to traditional RGB-based quantization techniques.
  • The algorithm successfully reduces colors while maintaining image quality.