Inline 3D inspection of roof tiles for sur-face defects and dimensional inaccuracies

Fraunhofer Institute for Manufacturing Engineering and Automation (IPA) recently presented a new optical 3D inspection system. With the aid of a laser light section sensor and a colour camera, roof tiles passing by on a conveyor are scanned and automatically put through a combined 3D inspection and colour test. The evaluation software detects any surface, dimensional or colour defect(s) and displays the colour-coded results on a monitor.

For 3D data analysis, the challenge was to be able to handle roof tiles of any type, shape or size on a cycle time of roughly 1 second. Thanks, however, to the use of an intelligent, robust analytical process, that goal was achieved in full. Now, reliable optical 3D in-process inspection has become feasible.

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