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Automatic Assessing and Monitoring of Weaving Density

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F09%3A%230000348" target="_blank" >RIV/46747885:24410/09:#0000348 - isvavai.cz</a>

  • Alternative codes found

    RIV/46747885:24410/09:#0000488

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Automatic Assessing and Monitoring of Weaving Density

  • Original language description

    Image restoration using the spectral approach is applied to the problem of automatic assessing of weaving density. A restored image of one set of yarns is obtained with the aid of two dimensional discrete Fourier transform. From the line profile of restored images Fisher?s test of periodicity find out the significant periodical components of specific frequency and defines model of time series. On the basis of frequency of model, the weaving density can be computed automatically. This method is then usedfor detection of defects associated with the change of weaving density, i.e. the weft direction defects. The detection is based on monitoring of weaving density in direction of length of fabric. Change of weaving density value against expected value indicates failure of regular structure. Control charts were used as a tool for judge the existence of failure or defects of regular structure.

  • Czech name

    Automatické vyhodnocování a monitorování dostavy tkaniny

  • Czech description

    Obnova obrazu s použitím spektrálního přístupu je aplikována k automatickému vyhodnocování dostavy tkaniny. Obnovené obrazy jedné soustavy nití jsou získany pomocí dvojrozměrné Fourierovy transformace. Na základě Fisherova testu periodicity je nalezena nejvýznamnější frekvence z profilu nití z obnoveného obrazu soustavy nití. Dostava tkaniny je pak vypočtena automaticky. Metoda je pak použita pro detekci defektů spojených se změnou dostavy ve směru útku. Detekce je založena na monitorování dostavy útkových nití ve směru délky tkaniny. Změna dostavy tkaniny proti očekávané hodnotě indikuje porušení regulární struktury. Nástrojem pro detekci jsou regulační diagramy.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    JS - Reliability and quality management, industrial testing

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Fibers and Polymers

  • ISSN

    1229-9197

  • e-ISSN

  • Volume of the periodical

    neuvedeno

  • Issue of the periodical within the volume

    10

  • Country of publishing house

    KR - KOREA, REPUBLIC OF

  • Number of pages

    6

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database