Inspection of electroplated gold

T. W. Ng, F. Y. Yong

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


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.

Original languageEnglish
Title of host publicationNinth International Symposium on Laser Metrology
Publication statusPublished - 17 Dec 2008
Event9th International Symposium on Laser Metrology - , Singapore
Duration: 30 Jun 20082 Jul 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


Conference9th International Symposium on Laser Metrology


  • Electroplating
  • Gold
  • Inspection

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