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A novel method for weft and warp yarn segmentation in multicolour yarn-dyed fabric images / Lin Luo in COLORATION TECHNOLOGY, Vol. 131, N° 2 (04/2015)
[article]
Titre : A novel method for weft and warp yarn segmentation in multicolour yarn-dyed fabric images Type de document : texte imprimé Auteurs : Lin Luo, Auteur ; Hui-Liang Shen, Auteur ; Si-Jie Shao, Auteur ; Xin John H., Auteur Année de publication : 2015 Article en page(s) : p. 165-171 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Trame 'Fils de chaine' Segmentation teints multicolores' Imagerie Index. décimale : 667.2 Colorants et pigments Résumé : This paper proposes a novel method for segmentation of weft and warp yarns in multicolour yarn-dyed fabric images. A multicolour yarn-dyed fabric is cross-woven by weft and warp yarns with different colours. When a multispectral imaging system is used to measure the colour of a multicolour yarn-dyed fabric image, its weft and warp yarns need to be detected before analysing their colours. Detection of interstices between weft and warp yarns is firstly conducted. A modified K-means clustering approach is then utilised to separate weft and warp yarns. The number of clusters is fixed to 2. The metric to measure the distance between a pixel and the mean of a cluster is the CIELAB colour difference. The initial means are determined by the expected values of fitted Gaussian distributions to CIExyY colour histograms. Experimental results show that the proposed method is promising for the segmentation of weft and warp yarns in multicolour yarn-dyed fabrics, with an improved segmentation accuracy and much faster processing speed than K-means clustering in CIEXYZ and CIELAB spaces. Note de contenu : - The response of multispectral imaging system
- Interstice detection
- Modified K-means clusteringDOI : 10.1111/cote.12130 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23689
in COLORATION TECHNOLOGY > Vol. 131, N° 2 (04/2015) . - p. 165-171[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17121 - Périodique Bibliothèque principale Documentaires Disponible Effectiveness of hydroxyfunctional chain transfer agent in acrylic resins / Amitabha Ray Chaudhuri in PAINTINDIA, Vol. LII, N° 9 (09/2002)
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Titre : Effectiveness of hydroxyfunctional chain transfer agent in acrylic resins Type de document : texte imprimé Auteurs : Amitabha Ray Chaudhuri, Auteur Année de publication : 2002 Article en page(s) : p. 51-56 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Réticulant Feuil 'Propriété mécanique' physique Réticulation Durcissement 'Transfert chaîne' 'Groupe hydroxyle' fonctionnel' 'Acrylique dérivé polymère' Liant Formulation Peinture 'Matériau revêtement' Index. décimale : 667.9 Revêtements et enduits Résumé : The cross link density of a cured coating is of paramount importance for determining the ultimate performance of the coating like solvent resistance and humidity resistance. It is also the most significant factor for determination of the mechanical properties like hardness and flexibility. Recently eco-friendly norms have driven formulators towards high solid coatings which have the additional advantage of the low energy requirement. This demands a resin of low molecular weight for having a higher application solid at a sprayable viscosity. These would however create a problem for thermosetting acrylics because with decrease in molecular weight the probability of functional group(s) required for cross linking per oligomer chains is being reduced. The author of the present paper has ensured that each oligomer chain would have at least one functional group by using new chain transfer agent. The objectives were met by using chain transfer agent which itself had the functional group. A series of experiments were conducted after preparing high solid acrylic oligomers with different monomers and 2- mercapto ethanol as chain transfer agent to check for its effectiveness as molecular weight modifier and molecular weight distribution modifier. The oligomers were also evaluated in coatings with melamine resin to check the gasoline resistance property and flexibility. The author has established conclusively that it is possible to improve both the properties simultaneously using the technique discussed. Note de contenu : - RESIN SYNTHESIS
- PROPERTIES AND CHARACTERIZATION OF RESINS
- FORMULATION OF COATINGS
- PREPARATION OF COATINGS
- EVALUATION OF COATINGS
- ANALYSIS OF COATING PROPERTIESPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12410
in PAINTINDIA > Vol. LII, N° 9 (09/2002) . - p. 51-56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001285 - Périodique Bibliothèque principale Documentaires Disponible