Image rectification method of digital negative x-ray scan of weld

Yue Yuan; Xin Zhou; Jia-hui Cong

doi:10.1117/12.850898

14 April 2010 Image rectification method of digital negative x-ray scan of weld

Yue Yuan, Xin Zhou, Jia-hui Cong

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75224I (2010) https://doi.org/10.1117/12.850898
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

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.

Citation Download Citation

Yue Yuan, Xin Zhou, and Jia-hui Cong "Image rectification method of digital negative x-ray scan of weld", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75224I (14 April 2010); https://doi.org/10.1117/12.850898

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