2 February 2009 High-resolution inline video-AOI for printed circuit assemblies
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Abstract
We enhance an existing in-circuit, inline tester for printed circuit assemblies (PCA) by video-based automatic optical inspection (Video-AOI). Our definition of video is that we continuously capture images of a moving PCA, such that each PCA component is contained in multiple images, taken under varying viewing conditions like angle, time, camera settings or lighting. This can then be exploited for an efficient detection of faults. The first part of our paper focuses on the parameters of such a Video-AOI system and shows how they can be determined. In the second part, we introduce techniques to capture and preprocess a video of a PCA, so that it can be used for inspection.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Benjamin Guthier, Stephan Kopf, Wolfgang Effelsberg, "High-resolution inline video-AOI for printed circuit assemblies", Proc. SPIE 7251, Image Processing: Machine Vision Applications II, 725104 (2 February 2009); doi: 10.1117/12.805807; https://doi.org/10.1117/12.805807
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