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		<citationkey>TatibanaLotu:1997:NoAuPC</citationkey>
		<title>Novel automatic PCB inspection technique based on connectivity</title>
		<year>1997</year>
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		<author>Tatibana, Mauro Hiromu,</author>
		<author>Lotufo, Roberto de Alencar,</author>
		<editor>Figueiredo, Luiz Henrique de,</editor>
		<editor>Netto, Marcio Lobo,</editor>
		<conferencename>Brazilian Symposium on Computer Graphics and Image Processing, 10 (SIBGRAPI)</conferencename>
		<conferencelocation>Campos de Jordão, SP, Brazil</conferencelocation>
		<date>Oct. 1997</date>
		<publisher>IEEE Computer Society</publisher>
		<publisheraddress>Los Alamitos</publisheraddress>
		<pages>187-194</pages>
		<booktitle>Proceedings</booktitle>
		<tertiarytype>Full Paper</tertiarytype>
		<organization>SBC - Sociedade Brasileira de Computação; USP - Universidade de São paulo</organization>
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		<keywords>mathematical morphology, pcb inspection, machine vision, connectivity, morphological application.</keywords>
		<abstract>This paper presents a novel technique for PCB inspection based on the comparison of the Connected Table of a Reference and a Test Image. The method is based on connected component analysis, which is a natural way to extract the connectivity information of the conductors of a PCB. The registration of the PCB holes, which is a common problem related to referential model techniques, is solved by the concept of zone of influence of each hole. This paper describes the method and its implementation using standard Morphology Image Processing techniques. A result of applying the technique to real images is shown.</abstract>
		<language>en</language>
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		<notes>This work has been supported by ProTeM-CC/CNPq through the AnIMoMat project, contract 680067/94-9.The conference was held in Campos de Jordão, SP, Brazil, from October 13 to 16.</notes>
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