Improved Multiscale Learning Dictionary Image Denoising Algorithm in Curved Wave Domain

Table 2

Peak signal-to-noise ratio–structural similarity of simulation results.

		PSNR (dB)-SSIM
		K-SVD	Bilateral filtering	Nonlocal mean filtering	Curvilinear transform algorithm	BM3D	Literature [13]	Literature [14]	Literature [15]	Methods in this paper
Bird	10	32.35–0.82	33.15–0.83	33.45–0.85	33.63–0.84	34.79–0.89	34.21–0.85	34.35–0.87	34.56–0.88	34.75–0.89
	20	28.42–0.75	29.33–0.77	29.54–0.78	29.89–0.80	31.16–0.83	30.13–0.79	30.52–0.81	30.66–0.81	31.15–0.82
	30	25.32–0.70	26.54–0.72	27.35–0.74	27.88–0.75	29.13–0.79	28.12–0.76	28.45–0.76	28.89–0.77	29.11–0.78
	40	24.31–0.67	26.11–0.69	26.57–0.70	26.62–0.71	27.68–0.74	26.87–0.71	27.11–0.71	27.34–0.72	27.69–0.74
	50	23.76–0.62	24.36–0.64	25.21–0.65	25.54–0.66	26.88–0.71	25.98–0.67	26.23–0.68	26.55–0.69	26.87–0.70
Boat	10	32.22–0.845	32.32–0.854	32.78–0.891	33.55–0.886	33.67–0.892	34.18–0.911	34.21–0.908	34.16–0.958	34.42–0.963
	20	29.12–0.697	29.32–0.732	29.64–0.798	30.11–0.815	30.19–0.819	30.38–0.842	30.33–0.838	30.53–0.928	31.18–0.935
	30	28.05–0.622	28.21–0.652	28.32–0.687	28.21–0.701	28.34–0.711	28.64–0.732	28.65–0.729	28.57–0.890	28.88–0.892
	40	26.11–0.512	26.34–0.547	26.32–0.612	26.65–0.0.607	26.89–0.655	27.18–0.672	27.11–0.668	27.38–0.673	27.52–0.680
	50	24.12–0.489	24.56–0.531	25.12–0.559	25.32–0.568	25.53–0.611	26.12–0.631	26.06–0.629	26.33–0.655	26.41–0.661