A Fast Iterative Pursuit Algorithm in Robust Face Recognition Based on Sparse Representation

Table 1

Comparison on ORL database.

Elapsed time per test image(s)
Test number	PALM	DALM	FISTA	TNIPM	OMP	Improved OMP
1	1.0957	2.6292	0.3548	0.9861	33.1391	0.0278
2	1.3422	2.6434	0.3628	1.0106	35.4203	0.0248
3	1.5197	2.6408	0.3607	0.9211	34.7244	0.0233
4	1.5638	2.6922	0.3661	0.9212	35.2557	0.0253
5	1.2596	2.6749	0.3655	0.8308	36.5687	0.0238
6	1.4026	2.6485	0.3635	0.8343	36.8514	0.0259
7	1.3802	2.7209	0.3682	0.8390	36.7581	0.0218
8	1.2477	2.7298	0.3742	1.0580	36.8528	0.0208
9	1.4948	2.7602	0.3635	0.8528	35.9073	0.0213
10	1.3220	2.6478	0.3670	1.04	38.6038	0.0214
Average(s)	1.3628	2.6788	0.3646	0.9294	36.008	0.0236
Recognition rate
Test number	PALM	DALM	FISTA	TNIPM	OMP	Improved OMP
1	62.5%	87.5%	90%	87.5%	77.5%	95%
2	70%	90%	90%	90%	82.5%	92.5%
3	77.5%	92.5%	92.5%	92.5%	80%	95%
4	80%	90%	92.5%	90%	80%	95%
5	70%	92.5%	92.5%	92.5%	85%	97.5%
6	77.5%	92.5%	92.5%	92.5%	82.5%	95%
7	75%	92.5%	95%	95%	87.5%	95%
8	67.5%	92.5%	92.5%	92.5%	85%	97.5%
9	82.5%	95%	95%	95%	85%	97.5%
10	75%	92.5%	95%	92.5%	82.5%	95%
Average	73.75%	91.75%	92.75%	92%	82.75%	95.5%