Table 1.

Comparison of performance of architecture on test set

Feature extractor	Object detector	mAP	AR	F1 Score
Human eye (embryologists)	Occipital cortex	0.925a	0.642	0.758
MobileNet V2 (CNN)	SSD	0.741	0.376	0.499

Reported mAP is at 0.5 IOU, and AR is at 100 detections per image. ^aWe report the raw precision here. Under the assumption that humans predict with 100% confidence, raw precision is equivalent to mAP. mAP: mean average precision; AR: average recall; SSD: single-shot detector; IOU: intersection-over-union ratio