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An improved 3D imaging system for dimensional quality inspection of rolled products in the metal industry

Usamentiaga, Rub�n; Garc�a, Daniel F.; Bulnes, Francisco G.; Espina, Adri�n; Smith, Lyndon N.; Usamentiaga, Rube�n; Garc?�a, Daniel; Bulnes, Francisco; Espina, Adria�n; Molleda, Julio; Smith, Lyndon; Dieye, Bassiru

Authors

Rub�n Usamentiaga

Daniel F. Garc�a

Francisco G. Bulnes

Adri�n Espina

Lyndon N. Smith

Rube�n Usamentiaga

Daniel Garc?�a

Francisco Bulnes

Adria�n Espina

Julio Molleda

Lyndon Smith Lyndon.Smith@uwe.ac.uk
Professor in Computer Simulation and Machine

Bassiru Dieye



Abstract

Measurement, inspection and quality control in industry have benefited from 3D techniques for imaging and visualization in recent years. The development of machine vision devices at decreased costs, as well as their miniaturization and integration in industrial processes, have accelerated the use of 3D imaging systems in industry. In this paper we describe how to improve the performance of a 3D imaging system for inline dimensional quality inspection of long, flat-rolled metal products manufactured in rolling mills we designed and developed in previous works. Two dimensional characteristics of rolled products are measured by the system: width and flatness. The system is based on active triangulation using a single-line pattern projected onto the surface of the product under inspection for range image acquisition. Taking the system calibration into account the range images are transformed into a calibrated point cloud representing the 3D surface reconstruction of the product. Two approaches to improve the line detection and extraction method used in the original system are discussed, one intended for high-speed processing with lower accuracy, and the other providing high accuracy while incurring higher computational time expenses. A mechanism to remove, or at least reduce, the effects of product movements while manufacturing, such as bouncing and flapping, is also proposed to improve the performance of the system. © 2013 Elsevier B.V. All rights reserved.

Citation

Smith, L. N., Espina, A., Bulnes, F. G., García, D. F., Usamentiaga, R., Molleda, J., …Smith, L. (2013). An improved 3D imaging system for dimensional quality inspection of rolled products in the metal industry. Computers in Industry, 64(9), 1186-1200. https://doi.org/10.1016/j.compind.2013.05.002

Journal Article Type Article
Publication Date Jan 1, 2013
Deposit Date Aug 8, 2013
Journal Computers in Industry
Print ISSN 0166-3615
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 64
Issue 9
Pages 1186-1200
DOI https://doi.org/10.1016/j.compind.2013.05.002
Keywords dimensional quality inspection, 3D imaging in industry,
3D surface reconstruction, line detection and extraction,
active triangulation
Public URL https://uwe-repository.worktribe.com/output/930950
Publisher URL http://dx.doi.org/10.1016/j.compind.2013.05.002