Multistage Optimization Using a Modified Gaussian Mixture Model in Sperm Motility Tracking

Table 4

Sperm detection results of proposed method, adaptive thresholding and global thresholding method.

Sample	No. of motile sperms	No. of immotile sperms	Proposed method			Adaptive threshold			Global threshold
			(%)	Sn (%)	Sp (%)	(%)	Sn (%)	Sp (%)	(%)	Sn (%)	Sp (%)
1	11	51	91.0	90.0	100	81.3	75.0	81.0	40.0	33.3	46.2
2	9	19	98.0	97.0	97.0	77.8	86.4	79.2	41.2	22.2	62.5
3	21	12	91.3	95.0	98.0	84.6	90.5	80.6	25.8	40.0	40.0
4	19	16	95.0	98.3	66.0	67.5	81.0	72.0	25.0	37.5	20.0
5	16	29	94.4	93.0	96.7	73.8	75.0	72.7	28.1	18.2	33.3
6	9	16	90.0	90.0	50.0	65.7	75.0	60.9	50.0	60.0	45.5
7	6	19	91.2	100	50.0	53.8	42.9	60.0	30.8	33.3	30.0
8	10	15	91.7	100	50.0	65.4	58.8	72.2	37.5	50.0	30.2
9	11	12	92.8	100	66.6	65.7	58.8	72.6	52.2	50.0	53.3
10	7	16	87.5	100	50.0	55.2	58.3	52.9	38.9	25.0	50.0