Patch-Based Principal Component Analysis for Face Recognition

Table 2

Comparisons of the four methods on recognition accuracy on the ORL database.

Method	Accuracy (%)	Patch size (pixel)			Time (s)
1DPCA	88.0	—	—	—	2.673
2DPCA	90.5	—	—	—	5.026
(2D)^2PCA	90.5	—	—	—	4.044
PPCA	91.0		0	7	7.186
			0	2	6.677
			4	0	8.617
			2	2	7.475