Gaussian smoothing level

Face recognition accuracy (%)

LIBSVM

PCA-LIBSVM

LDA-LIBSVM

iSVM

1

83.10

83.66

83.10

81.45

2

85.48

85.78

83.87

82.50

3

87.67

86.88

85.10

83.76

4

89.94

88.98

87.65

84.85