CHECK - A GENERIC AND SPECIFIC INDUSTRIAL INSPECTION TOOL

The authors present an overview of an 'inspection and control' package to perform automatic quality control of industrial components, specif ically electronic circuit boards. This application has grown out of a set of tools designed initially to aid the development of point distri bution models (PDMs) and grey-level models (GLMs) pioneered at the Wol fson Image Analysis Unit in Manchester. These models are both generic and specific. Generic, because they can be applied to most image class ification problems; specific, because they aim at the full interpretat ion of the variability of the objects to be modelled. The underlying v ision processing techniques are based on statistical pattern matching. Two synergetic approaches have been followed. The system is trained t o recognise the components from either their shape or their grey level appearance or both.