An Analysis Dictionary Learning Algorithm under a Noisy Data Model with Orthogonality Constraint

Table 1

Image denoising results (PSNR in dB).

𝜎	Noisy in dB	ADL method	Lena	House	Peppers
5	34.15	OIHT-ADL	38.26	38.08	37.70
		NAAOLA	37.36	37.04	35.93
		AK-SVD	38.44	39.20	37.93
		LOST	38.16	38.50	37.47
10	28.13	OIHT-ADL	35.02	34.79	33.89
		NAAOLA	32.73	32.61	31.12
		AK-SVD	34.85	35.32	33.82
		LOST	34.75	34.77	33.61
15	24.61	OIHT-ADL	33.17	33.05	31.69
		NAAOLA	30.87	30.82	29.22
		AK-SVD	32.59	32.98	31.28
		LOST	32.88	32.82	31.38
20	22.11	OIHT-ADL	31.83	31.71	30.13
		NAAOLA	29.65	29.22	27.40
		AK-SVD	31.38	31.51	29.76
		LOST	31.64	31.47	29.84