Spatial Images Feature Extraction Based on Bayesian Nonlocal Means Filter and Improved Contourlet Transform

Table 3

Experimental results for different search windows.

Scheme	Search window 16×16				Search window 32×32				Search window 64×64
	Image I		Image II		Image I		Image II		Image I		Image II
	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM	PSNR	SSIM
Original	30.53	0.658	31.45	0.679	30.09	0.669	31.21	0.685	29.89	0.675	31.09	0.703
Curvelet	30.78	0.697	31.66	0.722	30.12	0.701	31.39	0.737	29.91	0.688	31.15	0.749
Contourlet	31.23	0.759	31.98	0.784	30.35	0.762	31.65	0.791	30.17	0.744	31.23	0.806
CT+NLM	32.38	0.783	32.89	0.802	31.37	0.788	32.68	0.811	31.23	0.796	32.22	0.835