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Homogeneous pin-through-hole component inspection using fringe tracking

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Bibliographic Details
Main Author: Kenneth, Sundaraj
Other Authors: kenneth@unimap.edu.my
Format: Article
Language:English
Published: World Scientific and Engineering Academy and Society (WSEAS) 2009
Subjects:
Automated visual inspection
Fringe projection
PCB inspection
Engineering inspection > Automation
Quality control > Optical methods
Printed circuit boards
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/7417
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spelling my.unimap-74172009-12-14T08:11:42Z Homogeneous pin-through-hole component inspection using fringe tracking Kenneth, Sundaraj kenneth@unimap.edu.my Automated visual inspection Fringe projection PCB inspection Engineering inspection -- Automation Quality control -- Optical methods Printed circuit boards Link to publisher's homepage at http://www.worldses.org Automated visual inspection (AVI) systems are playing important roles in ensuring manufacturing quality in the electronic industry especially in the assemblage of printed circuit boards (PCB). Most existing AVIs that are used for PCB inspection are categorized as non-contact inspection systems consisting of a single overhead camera. Such systems, which can be manual or automated, are incapable of detecting 3D pin-through-hole (PTH) component placement defects and reporting them. By considering an assembled PCB as a textured surface with a predefined depth map, we propose to apply an angled fringe projection to detect defects in PTH component placement. It has been found that angled fringe projection can be used for surface analysis by applying phase shifting and phase unwrapping obtained from several images. However, the turnover time for PCB inspection is very crucial in the electronic industry. In other words, an alternative improved method that speeds up the inspection process is always desirable. This paper describes a method of applying an angled fringe projection for 3D height measurement using a single captured image and a direct triangulation technique. The main focus of this paper has been made on the development of a fringe tracking algorithm and its practical implementation details. This algorithm allows us to obtain the depth map of the surface under analysis with just one image. The simulated data and calibration process of the tracking algorithm are discussed and an experimental result is given for Peripheral Component Interconnect (PCI) component insertion in computer motherboards. With proper system calibration and accurate image processing, we demonstrate the successful manipulation of a structured collimated light source for height measurement using a single captured image. 2009-12-14T08:11:42Z 2009-12-14T08:11:42Z 2008 Article WSEAS Transactions on Signal Processing, vol.4 (7), 2008, pages 419-429. 1790-5052 http://www.worldses.org/journals/signal/index.html http://hdl.handle.net/123456789/7417 en World Scientific and Engineering Academy and Society (WSEAS)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Automated visual inspection
Fringe projection
PCB inspection
Engineering inspection -- Automation
Quality control -- Optical methods
Printed circuit boards
spellingShingle Automated visual inspection
Fringe projection
PCB inspection
Engineering inspection -- Automation
Quality control -- Optical methods
Printed circuit boards
Kenneth, Sundaraj
Homogeneous pin-through-hole component inspection using fringe tracking
description Link to publisher's homepage at http://www.worldses.org
author2 kenneth@unimap.edu.my
author_facet kenneth@unimap.edu.my
Kenneth, Sundaraj
format Article
author Kenneth, Sundaraj
author_sort Kenneth, Sundaraj
title Homogeneous pin-through-hole component inspection using fringe tracking
title_short Homogeneous pin-through-hole component inspection using fringe tracking
title_full Homogeneous pin-through-hole component inspection using fringe tracking
title_fullStr Homogeneous pin-through-hole component inspection using fringe tracking
title_full_unstemmed Homogeneous pin-through-hole component inspection using fringe tracking
title_sort homogeneous pin-through-hole component inspection using fringe tracking
publisher World Scientific and Engineering Academy and Society (WSEAS)
publishDate 2009
url http://dspace.unimap.edu.my/xmlui/handle/123456789/7417
_version_ 1643788808166047744
score 13.211869

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