1992
DOI: 10.1117/12.58623
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<title>Machine vision inspection of component footprints in PCB artwork</title>

Abstract: Abstt'act. A new iiiiited circuit boaicI (PCB) inspection scheme designed to peifoim automated iIlSI)eCtiofl of C0fl11)Ofleflt sites is pi'eseiitecl. A digitized illiage of the artwork for a board is stored after digitization via a scanner (300 dots per inch) in a TIFF (Tag Image File Format) file. At inspection time, after reading in the compressed foiiiiat TIFF file and decoding the compressed ilnage, the PCB is gra)11ica11y displayed oh a PC SCFCCfl t()ge(hcr vitIi a coinnianci menu. The user is then taken … Show more

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