An Incremental Two-Dimensional Principal Component Analysis for Object Recognition

Table 4

Comparison of the classification rates on the ORL database.

	2DPCA [12]; (112 × 4)	I2DPCA; (112 × 4)	RC2DPCA [18]; (8 × 8)	IRC2DPCA; (8 × 8)
1	0.894	0.842	0.881	0.867
2	0.947	0.909	0.925	0.922
3	0.961	0.918	0.939	0.936
4	0.979	0.950	0.967	0.963
5	0.980	0.955	0.970	0.975