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Table 4 Comparative performance of leukocyte detection over 80 images contaminated by various levels of salt and pepper noise

From: An object localization optimization technique in medical images using plant growth simulation algorithm

Noise level

Method

Leukocyte detected (true positives)

Missing leukocyte (false negatives)

Wrongly detected leukocyte (false positives)

True positive rate (%)

False positive rate (%)

False discovery rate (%)

Positive predictive value (%)

Salt and pepper

Noise level 10 %

463 leukocytes

HT

182

281

114

34.74

26.76

94.93

61.49

FCCN

304

159

106

63.38

24.88

38.78

74.15

GA + ACO

284

179

118

58.68

27.70

44.53

70.65

PGSA

424

39

30

91.55

7.04

8.59

93.39

Salt and pepper

Noise level 15 %

463 leukocytes

HT

135

328

120

23.71

28.17

128.63

52.94

FCCN

274

189

78

56.34

18.31

53.69

77.84

GA + ACO

218

245

123

43.19

28.87

71.85

63.93

PGSA

408

55

35

87.79

8.21

12.42

92.10