一种抗噪的红外图像对比度增强方法  

Resistible noise approach of infrared image contrast enhancement

作　　者：张长江[1] 付梦印[1] 金梅[2] 张启鸿[1] 

机构地区：[1]北京理工大学信息科学技术学院自动控制系,北京100081 [2]大庆石油学院电气信息工程学院,黑龙江大庆163318

出　　处：《红外与激光工程》2004年第1期50-54,共5页Infrared and Laser Engineering

基　　金：国防兵器预研基金资助项目

摘　　要：提出一种基于离散平稳小波变换和非线性增益的红外图像对比度增强方法。对红外图像进行离散平稳小波变换后,利用所提出的去噪方法对分辨率较好的各高频子带直接去噪;并利用所提出的非线性增益法结合文中的去噪法对分辨率较差的各高频子带进行增强。实验结果表明,提出的方法在有效地增强红外图像对比度的同时,又能很好地抑制相关噪声。算法在视觉质量上优于传统的反锐化掩膜法、直方图均衡法。A kind of infrared image threshold denoising and enhancement method based on discrete stationary wavelet transform and non-linear gain was given. After making discrete stationary wavelet transform to an infrared image, denoising was done by the method given in the high frequency subbands which was in the better resolution levels and enhancement was done by combining denoising method with non-linear gain method in the high frequency subbands which was in the worse resolution levels. According to the experimental result, the given algorithm can reduce the noise of infrared image effectively while it enhances the contrast of infrared image well. In visual quality, the algorithm is better than the traditional unshaped mask method and histogram equalization method.

关 键 词：红外图像 离散平稳小波变换 广义交叉确认 阈值去噪 对比度增强 非线性增益 

分 类 号：TN21[电子电信—物理电子学] TN911.73