Update README.md

README.md

@@ -31,6 +31,13 @@ Two architectures, trained independently on each imagery provider:
 | `inception_google_best.pth` | Classification | InceptionV3 | Google |
 | `inception_ign_best.pth` | Classification | InceptionV3 | IGN |
 
+**Note on training data and licensing.** Checkpoints fine-tuned on the
+Google subset of BDAPPV (`*_google_*`) derive from imagery distributed
+under CC-BY-NC 4.0; commercial users should prefer the IGN-trained
+checkpoints (`*_ign_*`, CC-BY 4.0 imagery) or assess accordingly. All
+models are initialized from Mayer et al. (2022) checkpoints — see their
+repository for base model licensing.
+
 ---
 
 ## Benchmark protocol