Fig. 12
From: Software application in early blight detection in tomatoes using modified MobileNet architecture
Grad-CAM visualizations for sample ‘Early Blight’ and ‘Healthy’ leaves. For each case, the original image (left) is shown alongside the Grad-CAM heatmap (right), where red regions indicate high importance for the model’s prediction. The ‘Early Blight’ example shows precise activation on disease lesions, while the ‘Healthy’ example shows diffuse activation, focusing on the leaf’s central vein. This pixel-level explanation allows users to visually verify the model’s focus, building critical trust for field deployment.
