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Table 3 The Confusion Matrix

From: Facial expression (mood) recognition from facial images using committee neural networks

Expressions presented

System Classification

Total

 

N

A

D

F

H

S

Su

Z

AD

DF

FH

 

Neutral (N)

62

          

62

Angry ( A)

 

15

1

  

3

 

1

   

20

Disgust ( D )

 

2

17

2

 

1

 

2

2

  

26

Fear ( F )

  

1

26

7

    

2

 

36

Happy ( H )

    

54

     

1

55

Sad ( S )

 

1

   

34

 

1

   

36

Surprised (Su)

      

47

    

47

Total

62

18

19

28

61

38

47

4

2

2

1

282

  1. The first column represents the expression tested. The last column of each row represents the total number of images of the corresponding expression tested (e.g. Out of 20 angry expressions tested 15 were classified as angry, 1 as disgust, 3 as sad, and one had no classification (all zero output). 2 disgust cases were classified as angry and 1 sad case was classified as angry. LEGEND: N: Neutral; A: Angry; D: Disgust,; F: Fear; H: Happy; S: Sad; Su: Surprised; Z: All Zero (no classification); AD: Angry-Disgust; DF – Disgust-Fear; FH: Fear-Happy