基于Matlab的同态滤波算法的研究

Study of Homomorphic Filtering Based on Matlab

研究了基于FFT的同态滤波算法和基于WT的同态滤波法算法,并应用Matlab软件仿真实现了上述算法。仿真结果表明采用基于FFT的同态滤波后,图像整体的对比度提高了,但是局部对比度增强效果不理想;而采用基于WT的同态滤波算法后,有效地消除了光照不均带来的影响,特别是在图像的边缘附近局部对比度有明显增强。

Homorphic fltering algorithm based on FFT and hmomorphic fltering algorithm based on WT is studies. Through the application of Matlab to simulate these image enhancement algorithms,the simulation experiment indicates that the FFT-based homomorphic filtering,image contrast increased overall,but not performing local contrast enhancement; while WT-based homomorphic filtering algorithm,the effective elimination of the impact of uneven illumination,especially near the edge of the image significantly enhance local contrast.