摘要
数字射线成像(DR)系统中,图像中的噪声是影响图像质量的重要因素之一,给图像分析和缺陷(尤其是微细瑕疵)识别带来了困难。为了提高图像的信噪比,对图像降噪方法的研究是十分必要的。对DR系统中噪声的来源及其产生的影响进行分析后,比较了几种常用的线性滤波方法对射线图像的降噪效果,介绍了近年来提出的一些较新颖的降噪方法。
In digital radiographic(DR) system, noise is one of the important factors that influences image quality. It becomes very difficult for image analysis and flaw discrimination, especially some faint ones. It is necessary to study image denoising methods to enhance image signal to noise ratio(SNR). On the basis of analyzing the source and the influence of noise, several typical denoising methods for DR are mentioned and compared, and some novel ways are introduced.
出处
《无损检测》
北大核心
2005年第4期198-201,共4页
Nondestructive Testing
