Figure 6.

Visualisation of the feature space by contrastive learning. The stereomicroscopic/haematoxylin and eosin (HE)-stained images with positive histological diagnoses indicated by blue/purple points are close to each other in the feature space. Blue points: diagnosable stereomicroscopic images for training; orange points: diagnosable stereomicroscopic images for validation; green points: undiagnosable stereomicroscopic images for training; red points: undiagnosable stereomicroscopic images for validation; purple points: diagnosable HE-stained images; and brown points: undiagnosable HE-stained images.