数字射线图像降噪中的非线性滤波方法

Nonlinear Filter Methods for Image Denoising in Digital Radiography

阐述了几种常用于数字射线成像信息处理的非线性滤波降噪法,包括中值滤波、同态滤波、小波降噪和形态滤波法。并通过试验进行了分析比较,得出各种方法的优缺点及适用场合。介绍了一些较新颖的降噪方法,为处理射线检测图像提供一个参考依据。

Several typical nonlinear denoising methods for digital radiographic information processing were introduced, including median filter, homomorphic filter, wavelet denoising and morphologic filter. The major objective was to illustrate the superb performance of nonlinear filters and to supply a reference to processing radiographic images. Their performances were analyzed and compared in restoring the images corrupted by the same complex noise. Some novel approaches were mentioned.