Table 2.

Mean values of the IoU (mIoU) metric for the trained Mask R-CNN models, evaluated on the test set

	Baseline	PMBOI	MBOI	MBOI+
mIoU${}_{\mathit{bbox}}$	0.555	0.543	0.576	0.682
mIoU${}_{\mathit{masks}}$	0.375	0.388	0.435	0.520