Internal Contour Extraction Algorithm Based on Quadratic B-spline for Images of Hot Long Shaft Forgings

Zhe Lin Li; Qin Xiang Xia; Yong Pan; Zhi Wu

doi:10.4028/www.scientific.net/AMR.472-475.2274

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 472-475Internal Contour Extraction Algorithm Based on...

Internal Contour Extraction Algorithm Based on Quadratic B-spline for Images of Hot Long Shaft Forgings

Abstract:

It is necessary that the internal and external contours are extracted from the image of hot long shaft forgings, while the forgings are measured by CCD measurement method. In the light of the blurry internal edges in the image of the hot forging, a method based on quadratic B-spline curve is employed to extract feature points. In order to remove the pseudo features, a method based on maximum correlation is presented. In accordance with continuity of the internal contours, quadratic B-spline curve is used to fit the internal contours. Experiments show that this algorithm can effectively extract accurate internal contours for images of hot squaring and chamfering forgings. The extracted contours could provide basic data for subsequent 3D reconstruction and geometric measurements.

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Advanced Manufacturing Technology, ICMSE 2012

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Periodical:

Advanced Materials Research (Volumes 472-475)

Pages:

2274-2278

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.472-475.2274

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Online since:

February 2012

Authors:

Zhe Lin Li, Qin Xiang Xia, Yong Pan, Zhi Wu

Keywords:

Hot Long Shaft Forging, Image Processing, Internal Contour, Quadratic B-Spline

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