Grey-level

Classifier

Training time (s)

Classification accuracy (%)

Number of features

1

2

3

4

32

SFAM

0.0018

100

100

100

100

BPNN

0.4704

99.59

99.88

99.32

99.71

PNN

0.3533

100

100

100

100

128

SFAM

85

99.64

100

100

BPNN

91.83

97.37

99.49

99.11

PNN

81.79

97.5

100

100