基于小波变换的同态滤波法去雾图像处理

主要使用同态滤波的方法进行去雾,对传统的同态滤波算法进行改进,引入基于小波变换的同态滤波方法,重点采用改进的Butterworth滤波对小波变换域系数进行处理,再进行小渡重构得到去雾后的图像.此方法在保持图像总体原貌的基础上对图像局部对比度增强效果显著.

Fog-removing Processing of Image through Homorphic Filtering Based on Wavelets Transformation

This article uses homomorphic filtering to remove the fog.By improving the traditional homomorphic filtering,we introduce a new spatial-frequency analysis method based on wavelets which is applied to homomorphic filtering to enhance the contrast of an image.In order to attenuate the low spatial frequencies and amplify the high spatial frequencies,the wavelet analysis coefficients are processed by the Butterworth filter.So the local uneven distribution due to non-uniformity of light source can be reduced and...