一种新的基于FFT的图像增强算法  

A new image enhancement method based-on FFT

作　　者：穆立胜[1] 李金宗[1] 马冬冬[1] 李冬冬[1] 

机构地区：[1]哈尔滨工业大学图像信息技术与工程研究所,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2010年第2期264-267,共4页Journal of Natural Science of Heilongjiang University

基　　金："十一五"总装重点资助项目(51322020703)

摘　　要：针对散焦模糊和噪声的频域特点,提出了一种基于FFT的频域图像增强算法。设计了高通倒高斯滤波器与低通反正切滤波器,使得图像去噪的同时又保留了细节。并研究了抑制振铃的算法,去除了频域加窗对图像的影响,对于增强图像的质量有显著的效果。In addition to considering the character of blur and noise fully, it is presented a new method based - on FFT. An inverse - gauss high pass filter and a low pass filter are designed to enhance image quality, which not only denoise but also reserve the fine information of image. And a ring suppression algorithm is studied to reduce the effect of adding window in frequency. It is proved that the method is effective to enhance image quality.

关 键 词：图像增强 高频增强 低通滤波 

分 类 号：TN911[电子电信—通信与信息系统]