Table 3: The statistical results of recognition rates on CMU-PIE.

Recognition
method
Average recognition rate (%)Standard deviation of recognition rates (×10−2)
RET 
[17]
GRF 
[18]
WEB 
[19]
ProposalRET 
[17]
GRF 
[18]
WEB 
[19]
Proposal

PCA99.5595.2394.661000.696.364.060
LDA99.9810099.951000.0500.080