Table 2.

Definition of evaluation metrics (N_TP= number of true positives, N_TN= number of true negatives, N_FP= number of false positives, N_FN= number of false negatives)

Metric	Formula
Accuracy	$\frac{N_{\mathit{TP}}+N_{\mathit{TN}}}{N_{\mathit{TP}}+N_{\mathit{TN}}+N_{\mathrm{FP}}+N_{\mathrm{FN}}}$
IoU	$\frac{N_{\mathit{TP}}}{N_{\mathit{TP}}+N_{\mathrm{FN}}+N_{\mathrm{FN}}}$
Recall	$\frac{N_{\mathit{TP}}}{N_{\mathit{TP}}+N_{\mathrm{FN}}}$
DSC	$\frac{2N_{\mathit{TP}}}{2N_{\mathit{TP}}+N_{\mathrm{FP}}+N_{\mathrm{FN}}}$