Study on noise depression of X-ray digital radiograph based on the wavelet transforms

被引：0

作者：

Wang, LM ^{[1
]}

Zhao, YL ^{[1
]}

Han, Y ^{[1
]}

机构：

[1] N China Inst Technol, Minist Educ China, Key Lab Instrumentat Sci & Dynam Measurement, Taiyuan 030051, Shanxi, Peoples R China

来源：

ISTM/2003: 5TH INTERNATIONAL SYMPOSIUM ON TEST AND MEASUREMENT, VOLS 1-6, CONFERENCE PROCEEDINGS | 2003年

关键词：

digital radiography; noise; wavelet transforms;

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In X-ray digital radiography system, there are many kinds of noise which originate from different imaging elements, such as CCD camera, scintilator 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.

引用

页码：887 / 890

页数：4