Total Variation Regularization Algorithms for Images Corrupted with Different Noise Models: A Review

Table 2

Denoising performance results for the ℓ¹-TV and the adaptive ℓ¹-TV methods for the grayscale “Boats” (512×512) image and the color “Barbara” (720×576) image. Time in parenthesis (adaptive case) corresponds to time elapsed to estimate the pixels corrupted with Salt & Pepper noise.

Image	Noise	SNR (dB)		SSIM		Time (s)
		ℓ^1-TV	Adaptive	ℓ^1-TV	Adaptive	ℓ^1-TV	Adaptive
Boats (gray)	30%	11.41	18.40	0.76	0.93	2.07	0.44 (5.11)
	50%	9.01	15.81	0.66	0.89	2.30	0.40 (5.11)
	80%	4.02	10.81	0.44	0.74	2.41	0.52 (8.57)
Barbara (color)	30%	12.23	17.08	—	—	11.40	2.89 (23.08)
	50%	10.22	14.71	—	—	12.46	2.46 (26.01)
	80%	4.52	10.89	—	—	13.66	2.84 (40.25)