| Titre : |
Correlation of visual and instrumental color measurements to establish color tolerance using regression analysis |
| Type de document : |
texte imprimé |
| Auteurs : |
Malathy Jawahar, Auteur ; Swarna Vinodh Kanth, Auteur ; R. Venba, Auteur ; Chandra Babu Narasimhan Kannan, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 409-419 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Colorimétrie
Couleur -- Analyse
Cuirs et peaux -- Teinture
Evaluation visuelle
Statistique
vision des couleurs
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Color is one of the important parameter considered in the determination of quality for fashion materials like leather. The color variation in each piece of leather sample in a batch should be within the acceptable range. Visual assessment is currently used in leather industry for quality control and color sorting. The current method used is subjective and often leads to disagreement between buyer and seller. Color measurement using reflectance spectrophotometer evaluates color consistently and is an objective assessment system. However, there is always an apprehension that the instrumental color assortment may not agree with the human perception of color difference. Hence, in the present investigation, an attempt was made to screen four color difference formulae, viz., CIELAB76, CMC (2:1), CIE94 and CIE2000 for their suitability in obtaining pass/fail decisions, which would be in conformity with that of the average human observer. Regression analysis was performed to find a correlation between visual and instrumental color assessments and the results indicate that CM (2:1) formula may be the most suited for the purpose. A detailed analysis of visual and instrumental color values revealed visual non uniformity towards sensitivity to hue, chroma and lightness. This difference in sensitivity was also taken into consideration in instrumental color sorting and pass/fail tolerance was established that led to closer conformity between visual and instrumental methods. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Methods : Visual assessment of color tolerance - Instrumental color analysis - Curve fitting and statistical analysis
- RESULTS AND DISCUSSION : Statistical color analysis - Analysis on instrument and visual color perception - Color sorting with two dimensional grouping |
| En ligne : |
https://drive.google.com/file/d/1XyT_llW7hzfrkDAGx7oDogTiBBBGc40h/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25051 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CX, N° 12 (12/2015) . - p. 409-419
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Correlation of visual and instrumental color measurements to establish color tolerance using regression analysis in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 12 (12/2015)
