Update app.py

app.py

@@ -274,7 +274,7 @@ def create_cam_visualization_pil(cam, alpha=0.6, vis_threshold=0.2):
     cam_resized = np.array(Image.fromarray(cam).resize((w, h), resample=Image.Resampling.BILINEAR))
 
     # Normalize CAM to [0, 1]
-    cam_norm = (cam_resized - cam_resized.min()) / (cam_resized.ptp() + 1e-8)
+    cam_norm = (cam_resized - cam_resized.min()) / (np.ptp(cam_resized) + 1e-8)
 
     # Apply threshold mask
     mask = cam_norm >= vis_threshold