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Proceedings Paper

Selected problems of optical metrology in industry
Author(s): Hans Rottenkolber
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Paper Abstract

The benefit of optical metrology for testing tires is obvious. The testing principle has proven a high degree of reliability with respect to recognizing defects. The defect is indicated as a bright or dark area in a grayvalue-image of the tested area. The grayvalue-image is substituted with false colors (green/red). In order to display a tire defect e.g. as a red spot an absolute threshold has to be defined. When leaving the laboratory environment and entering the production control some unexpected problems occur regarding this absolute threshold. Typical problems include the differentiation of reinforced and defect areas, the recognition of malfunctions, compensation of Cartesian shearing vs. radial deformation and taking the individual deformation of each single tire into consideration. Some solutions of the designated problems are discussed.

Paper Details

Date Published: 29 September 1998
PDF: 11 pages
Proc. SPIE 3407, International Conference on Applied Optical Metrology, (29 September 1998); doi: 10.1117/12.323317
Show Author Affiliations
Hans Rottenkolber, International Consultant (Germany)

Published in SPIE Proceedings Vol. 3407:
International Conference on Applied Optical Metrology
Pramod Kumar Rastogi; Ferenc Gyimesi, Editor(s)

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