Table 2.

Patches distribution and pixelwise unbalance before and after resampling the data. Each row indicates the number of patches in which the given annotation type covers the indicated percentage of pixels, e.g., the first one shows that the patches with less than 0.05% of pixels covered by Tumornest (T) annotations were not resampled. The pixel unbalance is computed as the ratio between the amounts of tumor-free and tumor pixels.

	Before	After
$T<0.05\%$	175,771	175,771
$T\ge 0.05\%$	9537	30,000
$T\ge 10\%$	5528	10,000
$S\ge 0.05\%$	9096	20,000
$N\ge 0.05\%$	9458	20,000
Total patches	209,390	255,771
Pixel unbalance	78.48	16.81