Real-time inspection system for printed circuit boards

Kang Sun Choi, Jae Young Pyun, Nam Hyeong Kim, Byeong Doo Choi, Sung Jea Ko

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Citations (Scopus)

Abstract

In this paper, we present a real-time PCB inspection system which can detect defects including the breaks in the wires and short circuit. The proposed inspection algorithm is based on referential matching between the stored reference image and the test (observed) image and is significantly faster when compared to existing algorithms. In the proposed method, block matching with half-pixel precision is performed to solve the translational and rotational misalignment in referential matching. We also present an image processing algorithm for compensating for the non-uniformity of the illumination source. In order to reduce the computational complexity, we optimize the proposed algorithm using the Single Instruction Multiple Data (SIMD) instructions implemented in Intel Pentium IV, so called the Streaming SIMD Extensions 2 (SSE2).

Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
EditorsBernd Michaelis, Gerald Krell
PublisherSpringer Verlag
Pages458-465
Number of pages8
ISBN (Print)3540408614
DOIs
Publication statusPublished - 2003

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume2781
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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