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Proceedings Paper

Study on noise depression of the image intensifier system based on the wavelet transforms
Author(s): Liming Wang; Yingliang Zhao; Yan Han
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Paper Abstract

In X-ray digital radiography system based on the image intensifiers, there are many kinds of noise which originate from different imaging elements, such as CCD camera, scintillator photoconvertor, X ray scatter, control circuit, and so on. These kinds of noise have a serious influence on the imaging quality. It maybe influence the result of identifying defects from the image and the spatial resolution of X-ray digital radiography system. In the paper, in order to depress the noise of system, the origin and the characteristic of the noise in X-ray digital radiographic system are studied, and a method and examples are given to depress the noise of X-ray digital radiograph on the principle of M channels' wavelet transforms, multiresolution wavelet analysis and control of coefficient in wavelet. It is shown that the results of noise depression are effective, the spatial resolution of image is improved, the edges and details of image are enhanced. It is also expressed that the method to depress the noise of X-ray digital radiography system by softer is feasible and economical.

Paper Details

Date Published: 19 March 2004
PDF: 4 pages
Proc. SPIE 5444, Fourth International Conference on Virtual Reality and Its Applications in Industry, (19 March 2004); doi: 10.1117/12.561287
Show Author Affiliations
Liming Wang, North China Univ. of Science and Technology (China)
Yingliang Zhao, North China Univ. of Science and Technology (China)
Yan Han, North China Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 5444:
Fourth International Conference on Virtual Reality and Its Applications in Industry
Jizhou Sun; Zhigeng Pan, Editor(s)

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