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Auteur Stephen Westland
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University of Leeds - Leeds - United Kingdom
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Colour management of a low-cost four-colour ink-jet printing system on textiles / Yuqian Zhang in COLORATION TECHNOLOGY, Vol. 125, N° 1 (2009)
[article]
Titre : Colour management of a low-cost four-colour ink-jet printing system on textiles Type de document : texte imprimé Auteurs : Yuqian Zhang, Auteur ; Vien Cheung, Auteur ; Stephen Westland, Auteur ; Katherine J. Beverley, Auteur Année de publication : 2009 Article en page(s) : p. 29-35 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : A low-cost four-colour (RBYK) dye-based ink-jet printing system for textiles was introduced in this study, in which red and blue inks were employed instead of the magenta and cyan inks used in half-tone printing. The basis of a colour-management system for this device was developed by determining the mapping between XYZ tristimulus values of output colours and the digital RBYK values using polynomial transforms. A second-order equation was found to give the best performance with an average characterisation error of under 7 CIELAB units. DOI : 10.1111/j.1478-4408.2008.00172.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2008.00172.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4822
in COLORATION TECHNOLOGY > Vol. 125, N° 1 (2009) . - p. 29-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011096 - Périodique Bibliothèque principale Documentaires Disponible Colour physics and colour measurement : state-of-the-art and challenges / Stephen Westland in SURFACE COATINGS INTERNATIONAL, Vol. 96, 2 (04/2013)
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Titre : Colour physics and colour measurement : state-of-the-art and challenges Type de document : texte imprimé Auteurs : Stephen Westland Année de publication : 2013 Article en page(s) : p. 100-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie
Couleur -- Analyse
Réflectance
Revêtements
vision des couleursIndex. décimale : 667.9 Revêtements et enduits Résumé : This article presents key concepts in colour measurement for solid-coloured surface coatings. These include the measurement of reflectance, the CIE XYZ system of colour specification and the CIELAB colour space. The state-of-the art is then explored through a discussion of the important challenges that remain to be solved. These include the prediction of colour difference, the prediction of colour appearance, measuring colour with cameras, and total colour appearance. Note de contenu : - DEFINING THE COLOUR OF SURFACE COATINGS
- COLOUR MEASUREMENT DEVICES
- EXACT AND CONDITIONAL COLOUR MATCHES
- THE CIE COLOUR MEASUREMENT SYSTEM : Primary transformations and standard illuminants - Chromaticity coordinates
- THE COMPLEXITIES OF SUBJECTIVE COLOUR APPEARANCE
- CREATING A UNIFORM COLOUR SPACE
- CHALLENGES AND PARTIAL SOLUTIONS : Colour differences - Improving perceptual predictions
- COLOUR APPEARANCE MODELS : How light levels affect perceived colour
- CAPTURING COLOUR USING CAMERAS
- THE ADDED COMPLEXITIES OF TOTAL COLOUR APPEARANCEEn ligne : https://drive.google.com/file/d/1raQ2zck7TBJ_3a6ciDSInMUvCOzhs8Mp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18390
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Code-barres Cote Support Localisation Section Disponibilité 14959 - Périodique Bibliothèque principale Documentaires Disponible A custom ink-jet printing system using a novel pretreatment method / Yuqian Zhang in COLORATION TECHNOLOGY, Vol. 125, N° 6 (2009)
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Titre : A custom ink-jet printing system using a novel pretreatment method Type de document : texte imprimé Auteurs : Yuqian Zhang, Auteur ; Stephen Westland, Auteur ; Vien Cheung, Auteur ; Stephen M. Burkinshaw, Auteur ; Richard S. Blackburn, Auteur Année de publication : 2010 Article en page(s) : p. 357-364 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : A low-cost and environmental-friendly direct dye-based ink-jet printing system was developed. A novel ink-jet pretreatment method was employed, in which the cationic fixing agent, Matexil FC-ER, was applied as the colourless fixing ink and applied only on image areas of the fabric by ink-jet printer. It was found that this new pretreatment method could more effectively enhance the colour strength and improve the wash fastness (greyscale ≥ 3) when compared with traditional exhaust application. The cross-staining of non-image areas of fabric was also apparently decreased using this new method. The light fastness of ink-jet pretreated samples was slightly reduced as the presence of Matexil FC-ER made dyes more sensitive to light. DOI : 10.1111/j.1478-4408.2009.00218.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2009.00218.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7626
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Code-barres Cote Support Localisation Section Disponibilité 011838 - Périodique Bibliothèque principale Documentaires Disponible Different transformation methods between CIELAB coordinates and Munsell hue / Forough Mahyar in COLORATION TECHNOLOGY, Vol. 126, N° 1 (2010)
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Titre : Different transformation methods between CIELAB coordinates and Munsell hue Type de document : texte imprimé Auteurs : Forough Mahyar, Auteur ; Stephen Westland, Auteur ; Vien Cheung, Auteur Année de publication : 2010 Article en page(s) : p. 31-36 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : This research aims to convert CIE L*C*abhab coordinates into corresponding Munsell hues. Different transformation methods for colour mapping from CIELAB colour space to Munsell hues are proposed. Polynomial equations that predict Munsell hue from CIELAB hab suffer from poor performance as there is no direct one-to-one mapping. Polynomial methods that predict Munsell hue from all three L*C*abhab values also show limited performance. However, a distance-weighted look-up-table model based upon the CIEDE2000 colour-difference equation is able to predict Munsell hue to an accuracy of 1 unit of root mean square error. All transformation methods in this paper were developed using CIE illuminant C and the 2° standard observer conditions and were based on 2729 Munsell renotation colour samples. DOI : 10.1111/j.1478-4408.2010.00224.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2010.00224.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8415
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Code-barres Cote Support Localisation Section Disponibilité 011984 - Périodique Bibliothèque principale Documentaires Disponible Dyeing behaviour of lyocell fabric : effect of fibrillation / Parikshit Goswami in COLORATION TECHNOLOGY, Vol. 123, N° 6 (2007)
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Titre : Dyeing behaviour of lyocell fabric : effect of fibrillation Type de document : texte imprimé Auteurs : Parikshit Goswami, Auteur ; Richard S. Blackburn, Auteur ; Jim Taylor, Auteur ; Stephen Westland, Auteur ; Patrick White, Auteur Année de publication : 2008 Article en page(s) : p. 387-393 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : To understand the effect of fibrillation in dyeing, non-fibrillated lyocell fabrics and fibrillated lyocell fabrics were dyed with different types of reactive dyes. Their exhaustion, fixation and K/S values were measured and compared. It was observed that fibrillated lyocell shows lower visual colour yield than non-fibrillated lyocell, independent of the exhaustion and fixation. It was also observed that some bifunctional reactive dyes, because of the location of reactive groups and flexibility of their structure, reduced fibrillation of lyocell through crosslinking. It was shown that defibrillating fibrillated lyocell with a cellulase enzyme increased the visual colour yield. Non-fibrillated lyocell fabrics after dyeing were subjected to a hydroentanglement treatment to create a fibrillation effect. These properties suggest that the lower visual colour yield of fibrillated lyocell is not mainly attributed to any change in fibre properties of the fibrils, but as a result of the light scattering from the fibrillated fabric surface. DOI : 10.1111/j.1478-4408.2007.00113.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00113.x/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6859
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Code-barres Cote Support Localisation Section Disponibilité 008990 - Périodique Bibliothèque principale Documentaires Disponible A novel approach to using neural networks to predict the colour of fibre blends / Caroline Hemingray in COLORATION TECHNOLOGY, Vol. 132, N° 4 (08/2016)
PermalinkA review of the effects of colour and light on non-image function in humans / Stephen Westland in COLORATION TECHNOLOGY, Vol. 133, N° 5 (10/2017)
PermalinkThe role of gamut, intuition and engagement in colour management in a design context / Phil Henry in COLORATION TECHNOLOGY, Vol. 136, N° 3 (06/2020)
PermalinkTowards the design of a blending system for precoloured fibres / Caroline Hemingray in COLORATION TECHNOLOGY, Vol. 135, N° 5 (10/2019)
PermalinkVector-based modelling of colour difference : a pilot study of the DE2000 colour difference model / David P. Oulton in COLORATION TECHNOLOGY, Vol. 133, N° 1 (02/2017)
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