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�������պ����ѧѧ�� 2004, Vol. 30 Issue (08) :698-701    DOI:
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X-ray flat-panel-detector-based digital radiography and its image calibration
Zhou Zhenggan, Teng Shenghua, Jiang Wei, An Zhengang*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� To improve imaging quality of X-ray digital radiography system, an X-ray flat-panel-detector-based digital radiography system was investigated. Four factors of flat panel detector which degrade image quality, such as random noise, offset, response nonuniformity and defective pixels, were introduced. How they occur and influence imaging quality was analyzed. Corresponding methods for image calibration were put forward to minish and eliminate the influences on image quality. Experimental results indicate that, with the image calibration methods, the influences of above mentioned factors can be removed effectively and the quality of image from flat panel detector can be improved greatly, which has founded a good foundation for succedent image identifying.
Keywords�� non-destructive tests   image processing   image calibration   flat panel detector     
Received 2003-04-18;
Fund:

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About author: ������(1967-),��,������̶��,����, zzhenggan@buaa.edu.cn.
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������, ������, ��Ρ, �����.X����ƽ��̽�������ֳ�����ͼ��У׼[J]  �������պ����ѧѧ��, 2004,V30(08): 698-701
Zhou Zhenggan, Teng Shenghua, Jiang Wei, An Zhengang.X-ray flat-panel-detector-based digital radiography and its image calibration[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(08): 698-701
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