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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