Image Denoising Based on Improved Gaussian Mixture Model

Table 1

PSNR achieved by different denoising methods (dB).

Image label	Noise level	Noisy image	Denoising image
			BF	MF	KBF	SR	DL	GMMD
Lena	0.2	11.017	11.773	11.721	11.652	11.823	11.903	12.008
	0.15	12.833	14.102	13.979	14.198	14.262	14.277	14.330
	0.1	15.933	17.211	16.727	17.018	17.232	17.265	17.347
	0.05	17.068	19.595	19.780	20.928	21.602	21.674	21.770
Academy	0.2	15.262	16.652	15.644	16.456	16.442	16.543	16.969
	0.15	16.381	18.520	17.007	18.290	18.764	18.788	18.959
	0.1	17.423	20.019	18.394	20.451	20.721	20.734	20.805
	0.05	18.222	19.437	19.445	22.663	22.887	22.924	23.043
Einstein	0.2	8.121	8.444	8.554	8.405	8.532	8.568	8.649
	0.15	11.025	11.828	11.834	11.719	12.014	12.087	12.168
	0.1	12.897	14.182	14.129	14.029	14.226	14.276	14.425
	0.05	14.978	17.266	17.001	17.076	17.231	17.239	17.328
Mandrill	0.2	14.119	15.518	14.953	15.421	15.672	15.693	15.867
	0.15	15.471	17.409	16.419	17.148	17.842	17.902	17.961
	0.1	11.065	11.774	11.496	11.604	11.789	11.802	11.843
	0.05	12.894	14.074	13.526	13.790	14.614	14.645	14.711