Fig. 3.

On the rows: three axial slices of the first CT scan on the COVID-19-CT-Seg test dataset (coronacases001.nii) are shown. On the columns: original images (left); overlays between the predicted and the reference lung (centre) and COVID-19 lesion (right) masks. The reference masks are in green, while the predicted ones, obtained by the LungQuant system integrating U-net${}_2^{90\%}$,are in blue