Fig. 5
From: AI-enhanced rapid diagnostic testing platform for mass opisthorchiasis screening
GradCAM visualization showing model attention patterns for OV-RDT grading. Representative heatmaps for each infection grade (0 to +4) demonstrate that the model correctly focuses on the T-band region, with activation intensity correlating with infection severity. Warmer colors (red/yellow) indicate regions of higher importance for the model’s decision.
