Color Image Denoising Based on Guided Filter and Adaptive Wavelet Threshold

Table 1

PSNR of the proposed method, bilateral filtering, and adaptive wavelet.

Noise variance	0.01	0.03	0.01	0.03	0.01	0.03
	Image 1 ()		Image 2 ()		Image 3 ()
Adaptive wavelet	26.7048	25.4507	28.0801	26.4821	27.7967	26.1699
Bilateral filtering	22.5751	22.0167	23.1551	22.6118	22.7560	22.1802
Nonlocal means	29.9765	27.4871	30.1415	27.6777	30.1910	27.6823
BM3D	28.9235	26.9276	30.4215	27.8901	30.9457	28.0957
Proposed method	39.5634	35.3129	41.5647	36.0267	40.8101	35.5930
	Image 4 ()		Image 5 ()		Image 6 ()
Adaptive wavelet	25.2375	24.2724	23.4663	22.7332	25.6576	24.5766
Bilateral filtering	22.6074	21.9415	22.1076	21.5494	22.3016	21.7254
Nonlocal means	26.6512	25.3287	25.3588	24.3120	27.8813	26.2105
BM3D	25.5157	24.4968	24.0394	23.2556	28.0621	26.3334
Proposed method	37.0265	34.1344	33.8535	32.1364	36.8294	33.9588
	Image 7 ()		Image 8 ()		Image 9 ()
Adaptive wavelet	27.5706	25.9130	29.0039	26.9908	21.4746	20.8466
Bilateral filtering	23.2116	22.4080	23.1373	22.4268	21.4834	21.0023
Nonlocal means	29.4155	27.0736	31.3181	28.2534	23.7273	23.0137
BM3D	29.1443	26.9120	32.0590	28.6197	21.7645	21.2712
Proposed method	39.1414	34.8926	41.2256	35.7943	31.4041	30.0693
	Image 10 ()		Image 11 ()		Image 12 ()
Adaptive wavelet	29.4247	27.5268	26.7443	25.4201	15.9075	16.9781
Bilateral filtering	23.6728	23.0581	22.2984	21.7973	22.7751	22.6673
Nonlocal means	30.3106	27.9794	28.7439	26.6227	17.4105	17.2673
BM3D	30.8146	28.3780	31.8744	28.4922	31.0366	30.1990
Proposed method	40.2191	35.9371	38.7096	35.0295	24.4256	25.7756