A Method of Radiographic Image Quality Enhancement

The quality of the image is one of the important influential factors in the process of defect evaluation of weld radiographic image. To improve the brightness and contrast of digital image of weld radiographic film, a new quality enhancement method in accordance with human visual system is proposed....

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Bibliographic Details
Published in2013 Fifth International Conference on Measuring Technology and Mechatronics Automation pp. 29 - 32
Main Authors Wei-Lei Mu, Jian-Min Gao, Hong-Quan Jiang, Fu-Min Chen, Zhi-Yong Gao, Kun Chen, Chang-Ying Dang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2013
Subjects
Histograms
Human visual System
Image Enhancement
Image quality
Image resolution
Radiography
Weld Radiographic Image
Welding
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ISBN9781467356527
1467356522
ISSN2157-1473
DOI10.1109/ICMTMA.2013.19

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Summary:The quality of the image is one of the important influential factors in the process of defect evaluation of weld radiographic image. To improve the brightness and contrast of digital image of weld radiographic film, a new quality enhancement method in accordance with human visual system is proposed. The human visual resolution ability of the gray and the imaging model of digital system are introduced, then the gray-level mapping transformation function is given in this paper. The processed method is compared with the images enhanced by histogram equalization, linear strength and logarithmic transformation. An experimental case study is provided to illustrate our work, the results demonstrated that the proposed method can improve Peak Signal to Noise Ratio, structure similarity and correlation coefficient by 17.6 times, 1.8 times and 0.2 times, reduce mean absolute error and mean square error by 75% and 94%.
ISBN:9781467356527
1467356522
ISSN:2157-1473
DOI:10.1109/ICMTMA.2013.19