Table 5. Average classification accuracy on the Extended Yale B Database over K for a fixed rate of 0.4 missing pixels.

Best result for each classifier is marked bold. Feature dimension = 128.

K	OMP	GOMP	CMP	Cauchy	Fair	Huber	Tukey	Welsch
1	0.51	0.54	0.57	0.61	0.62	0.56	0.54	0.54
2	0.54	0.52	0.89	0.87	0.86	0.88	0.88	0.88
3	0.57	0.48	0.95	0.91	0.90	0.93	0.94	0.94
4	0.56	0.45	0.95	0.92	0.90	0.94	0.96	0.95
5	0.55	0.45	0.95	0.92	0.89	0.94	0.96	0.96
6	0.54	0.45	0.95	0.91	0.89	0.94	0.97	0.96
7	0.53	0.45	0.94	0.91	0.89	0.94	0.97	0.96
8	0.52	0.45	0.94	0.91	0.89	0.94	0.96	0.96
9	0.51	0.45	0.94	0.91	0.89	0.94	0.96	0.95
10	0.50	0.45	0.94	0.91	0.89	0.93	0.96	0.95