Image enhancements using wavelet preprocessing for printed circuit board classification

Hanseok Ko; F. Berko; Brian A. Telfer; Joseph P. Garcia

doi:10.1117/12.205413

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6 April 1995 Image enhancements using wavelet preprocessing for printed circuit board classification

Hanseok Ko, F. Berko, Brian A. Telfer, Joseph P. Garcia

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Proceedings Volume 2491, Wavelet Applications II; (1995) https://doi.org/10.1117/12.205413
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

Image enhancement techniques based on a composition of uncorrelated subband coefficients called `wavelet' features are demonstrated on printed circuit board images for fault detection objectives as applied to an automated inspection system. The wavelets are used to preprocess the imagery for enhancing and filling the holes on the images of the conducting connections. Several image enhancement techniques are demonstrated and described to make visual performance comparisons.

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Hanseok Ko, F. Berko, Brian A. Telfer, and Joseph P. Garcia "Image enhancements using wavelet preprocessing for printed circuit board classification", Proc. SPIE 2491, Wavelet Applications II, (6 April 1995); https://doi.org/10.1117/12.205413

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