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Proceedings Paper

Research on image preprocessing techniques for real-time radiography inspection
Author(s): Dahai Ren; Zheng You; Sun Changku; Ye Shenghua
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Paper Abstract

In this paper, the image preprocessing techniques are studied in detail combining with the characteristics of real-time radiography. In view of the characteristics of radiant attenuation, an image processing method is presented to make the relationship between image gray scale and workpiece thickness linear. In order to get better image contrast, an image stretching method based on fuzzy transformation is designed by which the image is effectively enhanced. Meanwhile, another algorithm is also proposed to avoid the complexity of above method. Moreover, the study is carried out to the influence of radiation source focus, which is a very important factor to image quality in real-time radiography. The mathematical model is established for the influence of radiation source focus on real-time radiography image. On the basis of this model, the corresponding algorithm is proposed to eliminate its influence. All these algorithms are studied in detail with corresponding results presented.

Paper Details

Date Published: 13 May 2000
PDF: 8 pages
Proc. SPIE 3993, Nondestructive Evaluation of Aging Materials and Composites IV, (13 May 2000); doi: 10.1117/12.385493
Show Author Affiliations
Dahai Ren, Tsinghua Univ. (China)
Zheng You, Tsinghua Univ. (China)
Sun Changku, Tianjin Univ. (China)
Ye Shenghua, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 3993:
Nondestructive Evaluation of Aging Materials and Composites IV
George Y. Baaklini; Carol A. Nove; Eric S. Boltz, Editor(s)

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