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Proceedings Paper

Image rectification method of digital negative x-ray scan of weld
Author(s): Yue Yuan; Xin Zhou; Jia-hui Cong
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Paper Abstract

X-ray projection images are very important in medical diagnostics and industrial nondestructive testing. The digitization of this technology is bound to see rapid development. Images with non linear geometrical distortions, which are induced by optical lens and position, must be eliminated before testing and quantitative measurement. In this paper, we present a calibration method for geometrical distortions induced by optical lens, applying polynomial warping and bilinear interpolation, and discuss the selection pattern of reference point. The experimental result shows that this method is simple and practical, and it has been used in digital weld negative management system. Practical application in lottery printing quality inspection shows that this method is reliable and valid.

Paper Details

Date Published: 14 April 2010
PDF: 6 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75224I (14 April 2010); doi: 10.1117/12.850898
Show Author Affiliations
Yue Yuan, Shenyang Univ. (China)
Xin Zhou, Shenyang Univ. (China)
Jia-hui Cong, Northeastern Univ. (China)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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