3D Geometry Recognition for a PMI-Based Mixed Reality Assistant System in Prototype Construction

The purpose of prototypes in an industrial mass production context is the assessment and validation of desired product characteristics, relating to functional, geometrical or aesthetical aspects. Therefore, a prototype is an abstracted model with a subset of selected properties. Before single prototype parts are assembled, a quality inspection on receiving is mandatory. Based on a project conducted with the construction facility of an automotive supplier, the authors propose a concept for the automated quality inspection of received prototype parts. This inspection is performed by using reference points and characteristics, defined in a 3D CAD document. As part of the concept, this paper elaborates a module for the automated object recognition by means of computer vision, utilizing 3D CAD geometry and images as reference objects. The authors implemented and validated the module under laboratory conditions.