TABLE 2.

The segmentation accuracy of day‐one human embryo cytoplasm, PN and ZP with 5‐fold cross‐validation

Structure	Trial	Training instances	Training accuracy (%)	Test instances	Test accuracy (%)
Cytoplasm	1	933	97.28 ± 1.26	285	97.21 ± 1.12
	2	987	97.06 ± 1.37	231	96.64 ± 1.34
	3	975	97.09 ± 1.45	243	97.34 ± 1.56
	4	995	97.47 ± 1.67	223	96.28 ± 1.78
	5	982	97.24 ± 1.89	236	97.57 ± 1.34
	Average	974.4	97.23 ± 1.43	243.6	97.01 ± 1.33
PN	1	586	91.35 ± 8.96	96	90.30 ± 8.25
	2	543	85.68 ± 8.45	139	83.74 ± 7.30
	3	461	82.73 ± 10.57	221	81.05 ± 7.19
	4	542	80.44 ± 7.38	140	81.83 ± 10.61
	5	596	87.22 ± 8.50	86	83.50 ± 9.35
	Average	545.6	85.45 ± 8.77	136.4	84.08 ± 11.34
ZP	1	235	81.83 ± 6.09	173	80.24 ± 5.17
	2	342	82.96 ± 5.62	66	75.80 ± 5.91
	3	335	81.13 ± 6.23	73	82.29 ± 5.17
	4	342	79.98 ± 5.59	66	82.97 ± 5.38
	5	378	79.74 ± 5.95	30	76.71 ± 6.91
	Average	326.4	81.12 ± 5.61	81.6	79.62 ± 7.34

Instances of trainings and tests were recorded in the 5‐fold cross‐validation. Accuracy was measured by the IoU. Additionally, the difference of IoUs between the training phase and test phase in each trial as well as between trials were analysed with the Student t test.

There was no statistically significant difference between the training phase and test phase in each trial as well as between trials.