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Proceedings Paper

Inspection of electroplated gold
Author(s): T. W. Ng; F. Y. Yong
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Paper Abstract

Two aspects of electroplated gold that are often inspected on are plating thickness, and verification of gold presence at desired regions. With the later, in-situ reporting is desired. In this work, 8 color spaces - RGB, rgb, I1I2I3, HSI, YUV, YIQ, XYZ, and L*a*b* - were investigated to differentiate between regions with and without electroplated gold. It was found that the r, b, I2, H, U, V, I, Q, Z, and b* color space components provided distinct two level differentiability; while the R, G, and S color space components permitted differentiation at non distinct two levels. It was also uncovered that grayscale imaging would not permit any form of differentiation. The findings here indicate feasibility in using machine vision in tandem with color space analysis for electroplated gold inspection.

Paper Details

Date Published: 3 October 2008
PDF: 9 pages
Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71552G (3 October 2008); doi: 10.1117/12.814590
Show Author Affiliations
T. W. Ng, Monash Univ. (Australia)
F. Y. Yong, Interplex Singapore Pte Ltd. (Singapore)

Published in SPIE Proceedings Vol. 7155:
Ninth International Symposium on Laser Metrology
Chenggen Quan; Anand Asundi, Editor(s)

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