Pre-processing Step

Anger

%

Disgust

%

Fear

%

Happy

%

Sad

%

Surprise

%

Neutral

%

Average

%

Raw image

89.01

52

44.23

67.45

30.45

84.5

60.68

61.19

Cropping & resizing

98.89

86.7

73.23

100

65.23

92.89

77.78

84.96

Converting to Grayscale

93.25

87.15

82.25

100

73.35

100

82.25

88.32

Normalization

100

91.56

83.18

100

65.45

65.86

84.23

84.33

Resizing + Grayscale + Normalization

100

94.43

89.12

100

87.56

100

88.76

94.27