Worker assistance and quality inspection – application of optical 3D metrology and augmented reality technologies

Numerous industrial mount processes are characterized by a high variance due to the individuality of the final products. Manual assembly work subjectively influences the quality of an end product and errors thereby cannot be excluded. Errors that occur in production increase costs as it is likely to happen in the assembly of clamping which is used in CNC machining centers. As they are usually assembled manually, errors might occur

Objective Evaluation of Laser Markings for Quality Control

This paper presents a novel method for the objective quality evaluation of letterings at the example of laser markings. The proposed method enables an automated quality evaluation during random inspection of small quantities of frequently changing items. The markings are segmented from the image within a first step and compared against a master piece in the second step. Each character and contour is evaluated with regard to completeness, contrast, edge width and homogeneity according to quality criteria based on the human visual perception. Thus our approach provides an user-independent evaluation method with high repeatability and reproducibility for its industrial application