分数域啁啾滤波及其在数字图像处理中的应用

Chirp filtering in fractional Fourier domain and its application in digital image processing

讨论了分数域啁啾滤波的基本原理 ,同时将光学中的分数傅里叶变换引入到数字图像处理中 ,提出了一种分数域滤波去除影响数字图片质量之啁啾噪声的新方法 ,比较了分数域啁啾滤波和常规傅里叶频谱面上的滤波 ,获得了满意的模拟结果。

The principles of chirp filtering in fractional Fourier domain are discussed in this paper. After introducing optical fractional Fourier transform into digital image processing,we present a new method to eliminate chirp noise of digital images by filtering in the fractional Fourier domain. The filtering effects of this method and conventional Fourier domain filtering are compared and satisfying simulation results are obtained.