Figure 3

Visualization of class activation maps (rows 2 and 3) and corresponding H&E images (rows 1 and 4). The class activation maps are built for the binary classification task (no tumor, tumor) with the areas of tumor emphasized. Representative examples are shown for all four BCC grades: (a) superficial low aggressive, (b) nodular low aggressive, (c) medium aggressive, (d) high aggressive. Rows 3 and 4 represent close up images from the areas marked with black boxes. The slides have been cropped to focus on the tissue after running the model.