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

Test for Homogeneity

Test for Homogeneity

The goodness–of–fit test can be used to decide whether a population fits a given distribution, but it will not suffice to decide whether two populations follow the same unknown distribution. A different test, called the test for homogeneity, can be used to conclude whether two populations have the same distribution. To calculate the test statistic for a test for homogeneity, follow the same procedure as with the test of independence. The hypotheses for the test for homogeneity can...

You might also read

Related Articles

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

Sort by

Same author

Autoregulation of Woven Fabric Structure: Image-Based and Regression Analysis of Structural Homogeneity Under Varying Weaving Parameters.

Materials (Basel, Switzerland)·2025

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 21, 2025

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Published on: September 1, 2018

A New Method for Evaluating the Homogeneity within and between Weave Repeats in Plain Fabric Structures Using

Magdalena Owczarek¹

¹Faculty of Material Technologies and Textile Design, Institute of Architecture of Textiles, Lodz University of Technology, 90-924 Lodz, Poland.

Materials (Basel, Switzerland)

|July 13, 2024

Summary

This study introduces a new method to assess fabric homogeneity using computer image analysis. This technique accurately measures structural parameters, improving the understanding of fabric properties for specialized applications.

Keywords:

barrier composite computer image analysis filtration homogeneity inter-thread pores intra-repeat and inter-repeat porosity weave repeats woven fabric structure

More Related Videos

Second Harmonic Generation Signals in Rabbit Sclera As a Tool for Evaluation of Therapeutic Tissue Cross-linking TXL for Myopia

Second Harmonic Generation Signals in Rabbit Sclera As a Tool for Evaluation of Therapeutic Tissue Cross-linking TXL for Myopia

Published on: January 6, 2018

Improved Visualization and Quantitative Analysis of Drug Effects Using Micropatterned Cells

Improved Visualization and Quantitative Analysis of Drug Effects Using Micropatterned Cells

Published on: December 2, 2010

Related Experiment Videos

Last Updated: Jun 21, 2025

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties

Published on: September 1, 2018

Second Harmonic Generation Signals in Rabbit Sclera As a Tool for Evaluation of Therapeutic Tissue Cross-linking TXL for Myopia

Second Harmonic Generation Signals in Rabbit Sclera As a Tool for Evaluation of Therapeutic Tissue Cross-linking TXL for Myopia

Published on: January 6, 2018

Improved Visualization and Quantitative Analysis of Drug Effects Using Micropatterned Cells

Improved Visualization and Quantitative Analysis of Drug Effects Using Micropatterned Cells

Published on: December 2, 2010

Area of Science:

Textile Engineering
Materials Science
Computer Vision

Background:

Assessing fabric homogeneity is crucial for predicting material performance.
Existing methods may be destructive or lack precision in evaluating intra- and inter-repeat variations.
Understanding structural parameters like inter-thread pores (ITPs) and weave pitches is key to fabric properties.

Purpose of the Study:

To introduce a novel, rapid, and non-destructive method for assessing fabric homogeneity within and between weave repeats (intra-repeat and inter-repeat evaluation).
To define measurable coefficients of intra- and inter-homogeneity and correlate them with fabric airflow properties.
To establish a foundation for modeling specialized fabrics by understanding local structural variations.

Main Methods:

Utilized computer image analysis to measure structural parameters: inter-thread pores (ITPs), warp, and weft pitches.
Developed a system to assign parameters to modules within the weave pattern for intra-repeat (IAR) and inter-repeat (IER) fabric structure analysis.
Verified the method with artificial images and 30 real plain fabrics using proprietary software (MagFABRIC version 2.1).

Main Results:

Defined general measurable coefficients for intra- and inter-homogeneity.
Established strong correlations between homogeneity parameters (ITP size, shape, position, warp/weft pitches) and fabric airflow measurements via multiple regression models.
Demonstrated the significance of IAR and IER woven fabric structure homogeneity parameters in textile analysis.

Conclusions:

The novel method provides accurate and rapid assessment of fabric homogeneity.
Homogeneity coefficients are significant predictors of fabric airflow properties.
This research enables better modeling of specialized fabrics for applications requiring specific filtration, barrier, or mechanical properties.