| Author: | Lam, Siu-wing |
| Title: | Shade passing : applications in the manufacturing of multi-component apparel with particular reference to colour matching |
| Degree: | M.Phil. |
| Year: | 1998 |
| Subject: | Color in the textile industries Colorimetry -- Industrial applications Hong Kong Polytechnic University -- Dissertations |
| Department: | Institute of Textiles and Clothing |
| Pages: | 91, [26] leaves : ill. ; 30 cm |
| Language: | English |
| Abstract: | In recent years, computer colour management systems have become increasingly important to the colour industry where techniques such as instrumental pass/fail analysis are widely used by manufacturers, buying offices etc. However, a matter of major concern remains the assessment of pass/fail on a single component. In the case of apparel comprising a multiple of components, the existing commercial instrumental pass/fail systems seems not suitable. The Polytechnic University is supported to implement the Teaching Company Scheme (TCS). Under the TCS, research project directly related to the needs of client company, Triumph International Overseas Ltd.(Hong Kong Branch), was undertaken under the supervision of an academic staff member. Referring to Triumph's practice, three equations chosen for study were CIELab 1976, CMC(2:1) and CIE94(2:1:1). Colour difference, ΔE, of 230 sample pairs with different textures was calculated using the above equations. Totally 33 experienced "shade passers", including Triumph's and external colour assessors, were invited to assess these sample sets and gave comments on them. The comments given should be a pass match, fail match or marginal pass match. The data collected were then analyzed statistically. The percentages of acceptance were plotted against various ΔE calculated with respect to its equation. The results show that equation CMC(2:1) has a better correlation than the other two equations. The tolerance block so developed based on the CMC(2:1) equation was verified by applying the tolerance to one of the suppliers of Triumph. The precision and performance of the tolerance block developed is fairly good and acceptable. In addition, analyzed data show that better correlation could also be attained by increasing the number of observers. |
| Rights: | All rights reserved |
| Access: | open access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b14465048.pdf | For All Users | 5.13 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/4190