Experimental simulation of on-line measurement of screw-thread steel bars

Wenyi Chen; Zhiyiung Liu; Junhua Lu; Ping Li

doi:10.1117/12.227211

21 November 1995 Experimental simulation of on-line measurement of screw-thread steel bars

Wenyi Chen, Zhiyiung Liu, Junhua Lu, Ping Li

Proceedings Volume 2596, Modeling, Simulation, and Control Technologies for Manufacturing; (1995) https://doi.org/10.1117/12.227211
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

The screw-thread steel bar is a special rolled-one, it moves at a speed of 7 - 12 m/s on production line. In laboratory, it is difficult to reappear it truly. However, according to proportional simulation method, increase the camera's exposure time when the steel bar runs at a lower speed, then we can get image just as the one taken at the workroom; to capture necessary information, structural illumination is adopted, and sample from different angle; with the help of CCD camera's special time delay integration technique, it is easy to process this kind of motion-degraded images; using Soble operator to extract edge will greatly reduce data; the adaptive template-matching is employed to realize feature recognition; by making up straight lines with least mean square method, can work out the useful parameters such as the internal and external diameter, the distance of cross rib and the height of longitudinal rib.

Citation Download Citation

Wenyi Chen, Zhiyiung Liu, Junhua Lu, and Ping Li "Experimental simulation of on-line measurement of screw-thread steel bars", Proc. SPIE 2596, Modeling, Simulation, and Control Technologies for Manufacturing, (21 November 1995); https://doi.org/10.1117/12.227211

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