Three-dimensional and lengthwise-running testing contour e.g. recess, irregularity testing method, involves recording longitudinal positions of contour from different angles, where angles are observed in side view towards running direction

摘要

The method involves moving a testing head (6) relative to a testing contour e.g. recess (2a) in a running direction. Longitudinal positions of the contour are recorded from different angles, where the angles are observed in a side view towards the running direction of the testing contour. The contour is covered in the process direction. Images of the contour are received from optical sensors (12, 12`). Check is made whether an image has a small irregularity, which is in the form of a hole. An independent claim is also included for a testing head comprising optical sensors.