Inspection of electroplated gold

T. W. Ng; F. Y. Yong

doi:10.1117/12.814590

3 October 2008 Inspection of electroplated gold

T. W. Ng, F. Y. Yong

Proceedings Volume 7155, Ninth International Symposium on Laser Metrology; 71552G (2008) https://doi.org/10.1117/12.814590
Event: Ninth International Symposium on Laser Metrology, 2008, Singapore, Singapore

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.

Citation Download Citation

T. W. Ng and F. Y. Yong "Inspection of electroplated gold", Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71552G (3 October 2008); https://doi.org/10.1117/12.814590

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